General Roofing Systems Canada provides flat roof coatings throughout Canada. Roof coatings are completed in the following cities: Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Banff, Cranbrook, Kelowna, Vancouver, Whistler, Winnipeg, Toronto and points between. British Columbia. Alberta. Saskatchewan. Manitoba. Ontario.
Technology has changed. Today’s flat roof coating technologies allow for GRS to offer highly effective flat roof coatings that perform extremely well, have relatively lengthy manufacturer warranties, possess tax deductible benefits that a new flat roof system can’t offer, and are economically more feasible than traditional roof maintenance systems (the new flat roof coatings have excellent life cycle costs not available in past).
Flat roof coatings available today are an excellent, predictable solution for waterproofing new or old flat roofs (low slope roofs). GRS has cool roof coatings (“reflective white coatings”) and we also supply and install black rubberized flat roof coatings (which are more commonly used in Canada). We have recently been installing a number of flat roof and metal roof coatings throughout Western Canada (early in the 2011 season) and we will be posting the process of those installations to our blog as soon as photos start coming in from the sites.
GRS flat roof coatings are an excellent solution for flat roof repair over most aged flat roofing materials except coat tar roofing (in which case a roof recovery membrane system is better suited). As a side note, we can offer an “out of the box” manufacturer warranty on the new flat roof coatings that is 10 years, and on flat roof recovery systems 20 years is available from the manufacturer.
Technology in both categories of flat roof remediation or restoration has certainly changed in recent years. GRS installs flat roof coatings over metal roofs (the photo above shows a metal roof coating in progress in Leduc, AB just south of Edmonton), BUR Tar and Gravel Roofing, Modified Bitumen SBS Torch Down Roofing, and Single Ply Roofing such as EPDM, PVC, TPO, etc.
Our flat roof restoration systems utilizing roof coatings allow our clients to avoid a complete re-roof tear-off; they complete the flat roof repair or restoration process faster; coatings lower flat roof maintenance and replacement life cycle costs; and roof coatings (or roof recovery systems) eliminate landfill costs.
Coatings are applied using a brush, roller, squeegee, and/or sprayers as required. The coatings cure quickly (set instantly and cure within 48 hours). With excellent advancements in roof coatings our client base has rapidly grown also, GRS has many satisfied commercial and industrial clients that can attest to the remarkable advances in product deliverables in this particular segment of the roofing maintenance industry. We strongly encourage anyone with a flat roof or a metal roof that is seeking replacement, repair, or maintenance to look in to this excellent solution.
In addition to the new roof coating products being an excellent solution and alternative to complete flat roof or metal roof replacement, many of our flat roof coatings are green, environmentally friendly roof coatings. A few points of note:
They carry a 10 year roof coating warranty.
Have tax deductible benefits as they are considered maintenance and not a new roof.
Coatings are cold-applied roof systems (no open flame is used on the roof).
Many of our roof coating systems do not contain any toxins or VOCs.
Highly elastomeric – in most cases are equal to or exceed 850% elongation with 95% recovery – that is a very elastomeric roof coating – they are able to adapt to surface movement and thermal changes like few flat roof solutions can.
General Roofing Systems Canada (GRS)
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.
Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Banff, Cranbrook, Kelowna, Vancouver, Whistler, Winnipeg, Toronto and points between. British Columbia. Alberta. Saskatchewan. Manitoba. Ontario.
General Roofing Systems Canada is an Expert Shingle Roof Installation Contractor Serving Shingle Roofing Throughout Canada. We install shingles in Toronto, Calgary, Red Deer, Edmonton, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Kelowna, Vancouver, Whistler, and points between.
Below is a shingle installation and purchasing guide for storm nailing shingles, high wind rated shingles, impact resistant shingles, roofing underlayments and installations for shingle blow-offs, shingle installation placement for storm planning, and caulking shingles (tabbing) for high wind shingle applications.
High wind shingle roofing is different than normal shingle installations. Most installers do not plan for high winds, as most roofing installations are just fine without specific planning. GRS installs every roof assuming high winds and rainstorms (as well as ice, snow, water, ice damming, etc.).
The first consideration is the roof underlayment you use and how you install it. To summarize, roofing underlayment must wrap the complete roof deck. It must also run up all verticals and wrap all roof penetrations. Ice & Water peel and stick membrane has to be installed at the eave edge and in valleys in and around roof openings. Tar paper does not withstand storms, so synthetic roof underlayment should be used instead for the deck field area.
The Best Roof Shingles for High Winds, Hail, Ice Damming, and Rain Storms
IKO Armourshake is a fantastic shingle for high wind areas. It is heavy and has an out of the box wind warrant of up to 177 km/h. IKO also offers an extended warranty option of up to 210 km/h. Armourshake is so strong it has a UL 2218 Class 4 Impact Rating! It looks great, and our technicians say the system installs well. While our clients also remark on its street appeal, the only complaint that they have had with the Armourshake is the pattern of roof when it is installed isn’t as random as some like, while others like a more uniform pattern.
Another great shingle made for high wins are the Malarkey Legacy Shingles. They have a wind warranty almost identical to the IKO ones, as well as a Class 4 Impact Rating. The main difference between the two is that IKO maintains a 15 year “no grief” type warranty, while Malarkey’s is 10 years. All the limited lifetime warranties that manufacturers are offering are complicated. From our perspective, the more unconditional complete replacement front-end warranties are the most important.
Some other shingle systems we recommend include the Certainteed Presidential TL and the GAF Grand Canyon.
The Best Caulking for Shingle Installations
Karnak is by far one of the better caulking materials roofers can use. It is rubber-reinforced asphalt and doesn’t break down like typically black jack-roofing tar caulking.
For high wind application, tabbing is required under each shingle. Three to four dabs of caulking to the underside of each shingle will assist with high wind shingle lift tolerance.
In terms of technique, it is necessary to caulk valley flashing metal prior to installing shingles in the valley. This entails a consistent bead of caulk from top to bottom of each side about 2 in. in from the chalked in. Next, caulk the underside of roof penetrations such as roof vents, goosenecks, etc. Caulking the chimney backpan and skylight backpan prior to the shingles being installed will help storm planning, especially ice and water backups & leaks.
Finally, caulk the first row of starters, as well as all of the shingle capping.
Storm Nailing Shingles (Shingle Fastener Installation for High Winds)
GRS storm nails every roof and follows almost every precaution for high wind planning. We use six nails per shingle instead of four. The nails must be as low as possible and be in the double laminate strip or on the shingle nailing line (depending on the technology). A nail that does not hit the double laminate portion, if there is one, is a nail that has no value. We have our shingle installers storm nail for peace of mind. We don’t make a profit returning to fix our shingle installations.
Also, the nails (or fasteners) on the outside – so the first and the sixth nail fastened – must be within one inch of the end of the shingles. We are critically “OCD” when inspecting our shingle roof installation on this point. The nails on either end are critical.
The nails or fasteners must lay flat and be driven right in and flush with the shingle. A fastener that isn’t straight is a deficiency and won’t help in high winds. The nail head will also eventually break through the next shingle installed, which is obviously no good.
Our exclusive specification calls for the removal of every nail from the roof deck prior to installation, because simply hammering down the hold nails of the new shingles just gives the new fasteners a reason not go to straight in. Not to mention the fact that any nails simply hammered down can work their way up during installation and cause all manner of issues with roof water tightness.
High Winds and the Laminate Sealing Strip on Shingles
Do not install shingles in cold weather if there is any opportunity for high winds in the area. The weather must be warm, and the sun strong enough, to activate the sealing strip on laminate shingles. The sealing strip on laminate shingles is definitely a lifesaver when it comes to high winds and whether or not your shingles blow off.
The Placement of Shingles for High Winds
The GRS specification for shingle installation in high winds (AKA every roof for us) calls for the strip on double laminated shingles to be lowered from 1/16 to 1/8 of an inch. No shingle manufacturer we know of mandates this and many shingle professionals will argue its merits, but we see it as simple wind dynamic engineered as works (which is likely one of the many reasons we are installing for engineers, architects, and designers all the time). Getting back to the point, installing shingles lower causes more shingle material to be installed and it is a little more costly as a result. However, it increases shingle wind resistance. Try it and you will see.
Essentially, the premise is that more of the shingle below is covered (less expose = less opportunity for shingle wind lift) – lift resistance is important. More than that, the double laminate strip almost acts as a natural “break point” for the shingles to snap in high winds. To test this, install your laminate shingles as usual, and before the shingles seal in the heat slowly lift it up until it snaps. It will always snap at the double laminate strip. Lowering your shingle rows 1/8 of an inch gets the shingle above to hold down the shingle below before the break point at the double laminate. You’ll have to try it to understand. Anyways, this practice has lowered our shingle blow-off issues at least by 10 to 1, so we use this method for every roof.
General Roofing Systems Canada provides the best shingle re-roofing specifications and installation available in the roofing industry to Toronto, Calgary, Edmonton, Red Deer, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Kelowna, Vancouver, Whistler, and points between.
Re-Roofing Right. Why not install the roofing underlayment to the whole roof deck? Why not install it correctly? And why not use a roof underlayment that actually works and does what it is intended to do in the first place?
When re-roofing, roofers have a tendency to leave roofing underlay short at the roof edge when rolling it out (wind blown rain gets to the roof deck), or at the ridge of the roof (a ridge cap shingle cracks and a roof can leak), or don’t wrap their ridges and hips in underlayment hoping the shingles will perfectly do the job , or don’t run the roof underlayment or membrane up and under roof flashings, up and under skylight flashings, and wrap or neck tie roof penetrations with roof membrane such as roof vents, skylights, etc assuming that ice, snow, and water won’t back up under shingles and cause a roof leak.
Our roofing installation specifications call for the whole roof to be wrapped in underlayment or Ice & Water peel and stick membrane, and then we don’t have to worry about wind-driven rains, ice and snow backup, and ice dams at the roof edge or in valleys – all culminating in leaks. When we install a roof, the complete roof deck is wrapped in a “monolithic” style membrane specification and the roof cannot leak.
This specification includes running the roof underlay to the edge of the roof all the way, wrapping the ridge and hips into the underlay. -No part of the roof deck shows. Even on the coast, our roofs take punishing windstorms in places like West Vancouver.
Also, the roof penetrations (goosenecks, roof air vents, etc.) have Ice & Water membrane on the backside of the opening so that when ice, snow, and water build-up (ice damming) gets under the shingles, the roof underlayment is there to protect the roof from leaking. The same principle applies for installing a membrane at the wall and up & under skylight flashings (especially to the back side). Skylight leaks are one of the most common calls our emergency leak service receives.
Our roof installers also install Ice & Water peel and stick membrane to the valleys, right to the roof deck, and then metal valley flashing is installed on top of the membrane (even if the client wants a closed shingle valley, we still put metal flashing underneath the shingles), and then Ice & Water membrane is also installed to the top of the valley flashing edges so that when ice, snow, and water backs up in the roof valleys (ice damming which in Edmonton, Fort Mcmurray, Grand Prairie, Saskatoon, Regina, etc was so bad last winter) it can’t get back under the valley metal flashing and cause a leak.
At the roof eave we install Ice & Water membrane for ice, snow, and water back up at the gutters (last winter in Edmonton we had over 500 phone calls for ice damming at the eave on residential roofs alone – in one city during one winter!) – this is a primary area of concern for ice damming issues. The membrane sticks right to the roof deck and this avoids roof rot and roof leaks at the roof eave edge.
At the main area of the roof (the roof field) we use premium synthetic roof underlayment ( Premium Titanium Roof Underlayment ) which is twenty times stronger than roof felt underlay, it is lighter than tar felt paper, is recyclable, and doesn’t crack or rip at point of installation or from UV exposure.
If you (the homeowner that is getting your new roof) watched the roofing installation crew roll out felt paper at the point of re-roof installation, as seen right from the roof top… what actually occurs would cause you to never imagine EVER installing tar paper (felt paper) under your roof shingles. It cracks when the installers roll it out! This happens before it is even installed, and then it somehow has to go up angles at skylights, etc. And then the staple hammer tackers start whacking thousands of staples into it – each time the hammer tacker hits, it also tears the tar paper felt, and if it is cold outside it is even worse, and then the shingle nailers start and on one house 7000 – 12000 roofing nails are installed right through that paper. And to top it off, if you have a shingle blow off due to wind, do you think the brittle tar paper will even stay on the roof if the shingle blew off? What protects your home at that point? WE DON’T USE ROOF TAR PAPER – FELT PAPER – ROOFING FELT on our pitched re- roofing installations period – NEVER.
“t is the best possible roof underlayment specification and installation available to a homeowner for re roofing and is a standard specification for GRS Re-Roofing Installations.
Below are photos of a re-roofing project in progress that show the various areas of “small detail” in roof underlayment and Ice & Water membrane specification that creates a great re-roof end result.
If you have any questions about installing your shingle roof properly, or you need emergency roof repair service, or just have a simple question about your roofing, give us a call anytime. We have roofing experts available 24 / 7!
General Roofing Systems Canada Offers Expert Re-Roofing with our Exclusive GRS Re-Roofing Specifications in Toronto, Calgary, Red Deer, Edmonton, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Kelowna, Vancouver, Whistler, and points between.
GRS Canada has an unusual residential re-roofing specification standard – interestingly enough… it works!
Ask us for re-roofing client references that will tell you all about how our systems keep their homes completely, perfectly water tight without any concern.
In the photo above, a premium 44 in. Ice & Water membrane (IKO Goldshield Ice and Water Protector) is applied at the roof edge (eave) and to the wall area to the deck and up & under the step flashing onto the wall. The roof eave protection avoids backup from water and ice at the eaves-trough during freeze, thaw, and ice damming. The ice and water membrane is a peel and stick self-adhered membrane that sticks to the roof deck, blocking ice and water penetration, thus mitigating roof rot. The Ice & Water under the step flashing at the wall and up the wall also protects the deck, wall, and vapour barrier from ice and water penetration.
Also of note in the photo is the high gauge coloured metal eave drip edge flashing (GRS re-roofing standard), the wall area step flashing (galvanized metal that meets the wall) will be coloured when the re-roofing process is complete as the profile of the previous pine shakes were higher than the new laminate shingles, and finally of note in this photo is the ultra premium synthetic underlayment (Titanium Synthetic Underlayment) to the rest of the roof deck (also a GRS standard re-roofing specification).
Titanium synthetic roof underlayment is many times lighter and twenty times stronger than standard roof felt. It doesn’t break down like felt in UV, doesn’t expand/contract or get brittle like roofing felt, contributes to LEED points, and is 100% recyclable.
The photo to the right shows an Ice & Water membrane to the back side of the gooseneck roof vent and to the top side areas, and again this membrane is along the wall and step flashing of the roof (GRS standard).
Under that gooseneck vent is a premium Karnak caulking bead for added protection.
Have Ice & Water “necktie” all roof openings avoids ice/water backup under the shingles at the back of the vent area and under the vent onto the roof deck and into your attic and home. That is the number one repair our technicians undertake when repairing shingles roofs – likely 8 out of every 10 emergency roof repair calls we receive in sloped shingle roofing is for this reason (or some form of underlayment deficiency).
The photo to the right shows another GRS specification. A premium 44 in. Ice & Water membrane is applied to the roof sheathing in the valley, then a high
gauge coloured metal is applied over the membrane. For extra confidence, a “monolithic” type roof seal is created using another Ice & Water application to the edges of the valley metal. The premium synthetic roof underlayment is then run into the valley area.
If the metal has a crimp at any point, and when the metal expands and extracts (which metal does), it happens to snap – this is where a lot of roof leaks occur. When this occurs, we do not have to worry about this as our metal is a heavier than normal gauge and should not snap, but we also have a premium quality membrane underneath the metal valley.
Also, if ice and water backs up in our valleys and gets under the shingles, which regularly occurs, we have yet more sealant again at the edges of the valleys, which seals the roof valley. In this way, it cannot leak, as water cannot get around the side of the valley metal to the roof deck.
Finally, even when we close the roofing valley with shingles, we still use this underlayment re-roof specification so that when the roof shingles fail in the valley from age or when someone walks on the shingles in the valley, we then have the Ice & Water and metal underneath the shingles. We apply this method when some homeowners want a re-roof to show only shingles and no valley metal in the roof valley. Our specification mitigates shingle deterioration in the roof valley area first, as that is where most roof water runs and ice builds up.
Our website has an extensive section (it is actually the shingle re roofing installers installation manual) that details our re-roofing how to and the specifications of re roofing our installers are held to at this link:
General Roofing Systems Canada provides re-roofing services throughout Canada. Toronto, Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Banff, Cranbrook, Kelowna, Vancouver, Whistler and points between.
Inspect your attic space before you start your residential re-roofing project.
Replace wood deck sheathing that is rotted or water damaged, analyze attic air exchange, and install attic air vents to be sure your attic is ventilating properly. Check for heat loss at the vapour barrier, be sure your insulation is doing the job, and replace plumbing boots, roof flashing, etc. as required while you are at it.
When replacing your residential sloped roof, it is critical to inspect your attic space first.
If you re-roof your home without inspecting the attic for roof rot, water damage, vapour barrier issues, heat loss to the attic, and proper air intake/exhaust, you are risking have to re-roof again in half the time or worse.
If this occurs, what was the real cost of your new roofing shingles?
Proper ventilation in your attic, building envelope heat loss, proper insulating, and other components of professional shingle re-roofing standards and procedures all play important factors in the process of a shingle roof replacement, and it greatly affects the length of time your new shingles will last.
The best roof shingles are shingles that are on the best roof system.
You can have the best shingles in the world and they will prematurely fail if your roofing system is deficient.
If you install a new shingle roof, and you do not check the attic space, you are really re-roofing shingles (or any other roofing material) with a lot of risk to your newly shingled system. Not to mention, most people decide to re-roof their home due to the fact that something is not right with their roof to begin with. We heard statements such as:
“The roof is leaking.”
“The roof is ice damming, and now snow or water backup is causing roof leaks.”
“The roof valleys are leaking.”
“Our shingles are just no good and they need to be replaced.”
The point is, there are many reasons roof shingles do not last as long as they should.
For example, if you have a vapour barrier issue (warm air from the inside of your home is entering the attic space) and the warm air entering your attic space is then causing ice damming on your roof, the ice damming then causes leaks (the ice or snow on the roof melts and freezes and melts and backs up under the shingles and then leaks into the attic, all because the underside of the roof sheathing is too warm due to heat loss into the attic). Moisture then causes roof rot to the sheathing which isn’t healthy. The ice backup on the roof damages the shingles and roof underlay, the moisture destroys your insulation, and the water leaking into your home can do all sorts of damage.
Before you re-roof your home and pay the cost for new shingles, you want to know if heat loss into your attic is occurring or your roof sheathing is rotten. If you do not do this before the new shingles are installed, you risk investing in new roofing and the roof rot not being uncovered and replaced, and the warm air coming in to your attic that now causes roof ice damming the following year and perhaps the roofers didn’t install ice and water properly or at all or metal to the roof valleys under the shingles or a host of other possibilities and now you have a brand new shingled roof that cost you an arm and a leg that is leaking with roof rot on the roof sheathing and you need another new roof! You see the possible problems? (Talk about a run on sentence!).
From the same example, let’s say you do not do an assessment of the air ventilation and now you have a new shingle roof, AND your attic air intake is plugged at the soffits by insulation. On top of that, your roof vent exhaust isn’t working properly because you only have four duro-flo air vents at the ridge for a 2100 sq. ft. home/attic space. You’ve had leaking in your home due to condensation in the past and your roof system can’t breathe and your old shingles deteriorated prematurely with your last roof. By now you must be thinking “My roof or shingles only lasted 12 years, and the limited shingle warranty was for 30 years! What the heck?).
Well, news is that your new roof shingles will only last 12 years. Your new limited lifetime warranty on your shingles won’t cover the costs because your roof ventilation ratio is not right, your intake air is compromised because there is insulation covering the intake vents at the soffits, and the exhaust attic ridge vents can’t work properly either…. not to mention that your house is 80 years old and the vapour barrier is compromised and is letting warm air into your attic space, etc. etc. etc. Replacing shingles after having new shingles put on only 10 years earlier is not where you want to be (especially when the wife finds out that it wasn’t the roof shingles fault!). Anyway, sorry I am off track…
The lesson here is… your new shingles will last decades and decades and decades if the roof system and attic space is proper for the new roof shingles to perform properly (and you look like the wise leader of the home to boot!)
I think we all get the point here…
As of 2011, our new policies mandate that we cannot re-roof a home with shingles unless a thorough attic inspection is done prior.
The GRS Standard Re-Roofing Specifications and Pricing now allows for this service in the price we quote you for new shingles. It also allows for a venting analysis, new roof vents, plumbing boots, etc. in the cost of your new roof shingles. Movement of insulation away from the soffit areas is also in the cost of your new shingles, as well as replacement of deck sheathing up to 100 sq. ft. As long as you don’t have a major roof or attic space remediation issue requiring the services of a restoration expert, for the most part, the price you receive from GRS for re-roofing your shingles is the same price to also bring your attic space up to par so the system performs as it should.
Some examples of standard GRS shingle replacement specifications are:
Roof sheathing needs to be replaced if it is rotting (which is also a health risk) or has excessive water damage from ice damming back up – this is a Standard Specification in the GRS Shingle Re Roofing Cost and our shingle re roofing prices include up 100sq ft of roof sheathing replacement. Air ventilation calculations are required and an analyis of your attic ventilation is completed free of chaege, air vents are included in the new price of your shingles, inspection of the insulation and inspection of your vapour barrier is also included in the cost of your new shingles. Insulation replacement and vapour barrier replacement is not included in the price of your new shingles but the inspection is included and is complimentary.
Request a Re-Roofing Assessment and Shingle Re-Roof Costs here.
If you have questions about our post on roof ventilation and the affects of your roof system on your new shingles, if you require emergency roof repairs, or just have a simple query call us 24 / 7 on our toll free line +1.877.497.3528.
General Roofing Systems Canada (GRS) Offers Asphalt Roof Shingle Replacement, Repair, and Maintenance in Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Banff, Cranbrook, Kelowna, Vancouver, Whistler, Winnipeg, Toronto and points between. British Columbia. Alberta. Saskatchewan. Manitoba. Ontario.
Asphalt Shingle Re-Roof Material We Use and Review Below
IKO has a full choice range of shingle materials and has representation in Alberta, British Columbia, and Saskatchewan (IKO started in Calgary). IKO shingles are readily in stock at suppliers and retail stores like Rona. The quality is very consistent as well. The Cambridge, Royal Estate, Grandeur, Armourshake, and Crowne Slate are some of our roofer favourites.
From the IKO roofing website, “IKO believes the success and longevity of their company is attributed to three key ingredients: Top quality products, continuous innovation and state-of-the-art manufacturing facilities. A family-owned company now for three generations, IKO intends to be around for many more. IKO products are found on distinctive residential, commercial and engineering structures in more than 50 countries. IKO operates over 20 manufacturing plants globally.” [ Source: www.iko.com ]
GAF was founded in 1886, GAF is North America’s largest manufacturer for commercial and residential roofing.
From the GAF Roofing Website, “GAF attributes its success to be a unique philosophy of: Helping property owners & architects to make their best and safest roofing choices, helping supportive distributors and roofing contractors to build their businesses and avoid hassles.” [ Source: www.gaf.com ]
The roofers at GRS consistently rate GAF offerings (complete line) to be of excellent quality. GAF also provides specific solutions for various roofing requirements. They manufacture a premium asphalt roof shingle with a wide range of options for shingle style, texture, colour, and optional material that can be used for re-roofing your home (for example, GAF Tru Slate).
From the Certainteed Website, “CertainTeed is a subsidiary of Saint-Gobain, one of the top 100 industrial companies in the world. Saint-Gobain employs approximately 22,000 people in North America and more than 109,000 people in 64 countries world-wide.” [ Source: www.certainteed.com ]
Certainteed Roofing has a comprehensive offering of quality asphalt roof shingles. Some of them are known as top performers in their specific categories.
The reviews and ratings of asphalt roof shingles from the roofers at GRS reflect this statement as well. The Presidential, Landmark, and GrandManor Certainteed shingles compete extremely well in their respective categories. Our roofers consistently report the quality to be consistent. We have had excellent commercial and residential roofing success when re-roofing with Certainteed shingles like the Presidential, especially in areas where a shake-looking shingle is the only option (beyond real cedar shake) to comply with the architectural controls of a residential neighbourhood.
From the Malarkey Website, “Since 1956, Malarkey Roofing Products™ has operated as a family owned, professionally managed, privately held company, headquartered in Portland, Oregon. Malarkey believes in creating long-term value for customers and business partners. Striving for excellence propels Malarkey to new heights in polymerization and the development of long lasting products.” [ Source: malarkeyroofing.com ]
If you know anything about GRS and the position or ratings our shinglers take with respect to Malarkey, you will know that the reviews from our roofers are always positive.
Malarkey shingles are, in our estimation, one of the best alternatives to more traditional or popular asphalt roofing shingles like the BP Harmony, IKO Cambridge, etc. Not that these examples are poor shingles – they are very good asphalt shingles in their respectively categories. It also is not fair to compare a Malarkey Legacy with the Zone nailing strip and the modified rubber polymers in the shingle versus an asphalt-based shingle in a completely different category. However, what we do try, whenever possible, is to move our customers that would normally consider something along the lines of a BP Harmony or IKO Cambridge into a more premium SBS rubber-based IKO or Malarkey product (such as the Malarkey legacy shingle). Comparing a Malarkey Legacy versus an IKO Cambridge is not a reality; you have to compare a
Malarkey Legacy versus an IKO rubber shingle, not an asphalt one. The reason we try to move our customers up just one step in pricing is that the price difference is nominal for the premium quality you receive. Instead of a “good” asphalt shingle, you get a “great” one with SBS rubber modifiers.
Calgary, Alberta recently experienced two wind storms that blew shingle off approximately 25,000 – 50,000 rooftops in Calgary and Southern Alberta. We experienced not one blow off with the Malarkey Legacy shingles. Now that, in our opinion deserves a high rating!
Owens Corning Shingles
From the Owens Corning Website, “Owens Corning is a global residential and commercial building material provider. A Fortune® 500 Company for 57 consecutive years, Owens Corning is driving sustainability by delivering solutions, transforming markets and enhancing lives.” [ Source: www.owenscorning.com ]
Owens Corning asphalt shingles are now represented and readily available in British Columbia, Alberta, and Saskatchewan at roofing suppliers and retail stores such as Lowes. The quality of the Owens Corning asphalt shingle has always been good, alongside a comprehensive choice of colours, models, and textures.
Our experience with Owens Corning is more limited than with BP, IKO, Malarkey, GAF, and Certainteed but all indications are from the ratings and reviews from our shinglers is that they are a good quality asphalt shingle.
The BP asphalt shingle line-up is well represented in Western Canada and includes the Manoir, Everest, Mystique, Harmony, Mirage, Yukon, and Dakota. The Harmony shingle is the most popular of the BP shingles and it is available in a wide selection of colors. [ Source: www.bpcan.com ]
Cedar Roof Shake Looking Textured Shingles:
Designer asphalt shingles such as the Certainteed Landmark TL, Certainteed Presidential TL Ultimate, GAF Elk Grande Prestique, Certainteed Presidential Shake, GAF ELK Grand Sequioa, GAF ELK Grand Canyon, GAF ELK Country Mansion, GAF ELK Camelot, Certainteed Carriage House, Grand Manor, and the IKO Royal Estate and Armourshake shingles are examples of designer materials that achieve textured roof profiles.
General Roofing Systems Canada removes snow and ice throughout Canada. Flat Roof Repair; Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Banff, Cranbrook, Kelowna, Vancouver, Whistler, Winnipeg, Toronto and points between. British Columbia. Alberta. Saskatchewan. Manitoba. Ontario.
CAUTION: DO NOT REMOVE SNOW FROM THE ROOF YOURSELF!
GRS Canada, Inc. has removed snow and ice from hundreds of residential, commercial, and industrial rooftops throughout Alberta, BC, and Saskatchewan.
We have also consulted facility managers at commercial and industrial facilities all over the world on proper snow removal protocols, techniques, and adherence to structural engineering. Live loads on rooftops are important to consider, proer safety for the workers on a roof is critical, and knowing how to remove snow from a roof may just save the lives of the workers and occupants in the building.
Our article on rooftop safety and roof snow removal was spurred by the roof collapse in Anchorage, Alaska and the subsequent news reports talking about “roof snow removal parties”. Our concern is that folks think it is OK to remove snow from roofs without using professional providers.
MUNICIPALITY OF ANCHORAGE ISSUES PRESS RELEASE MARCH 2, 2012
“ANCHORAGE– In the last few weeks several roofs in Anchorage have failed due to stress from snow. The buildings involved were generally older (pre-1980) with flat roofs. Several, but not all, failed where snow had drifted. Newly fallen snow is not very dense. However, over the course of the winter accumulated snow on roofs becomes denser. Per current code the design snow load in Anchorage is 40 pounds per square foot (psf), which is equivalent to approximately two feet of dense snow. A roof designed to current code should not have problems until the load is significantly higher than 40 psf. It is recommended that building owners and managers monitor the snow loads on their roofs. Of special concern are older buildings with flat roofs, and those with areas of snow drifting, such as at parapets and lower roofs. Special attention should also be paid to long overhangs where snow blankets are draping over the roof edge. If one hears creaking in the roof, observes excess deflection in trusses or beams, or sees bowing of columns, immediate investigation by a structural engineer is warranted. Conditions on roofs may worsen as additional snow falls in March and April, building owners should consider preventative roof shoveling. Shoveling a roof is inherently dangerous, so special precautions should be taken. The intent is to lighten the roof load by removing a significant portion of the snow, not necessarily all of it. Trying to remove all of the snow down to the roofing could increase the danger of a shoveler sliding off the roof as well as causing damage to the roofing materials.”
DO NOT REMOVE THE SNOW FROM YOUR ROOF YOURSELF – ROOFS COLLAPSE.
Firefighters responded to a callers reporting structural collapse at the South Anchorage church Friday March 2, 2012. Firefighters initially were called with reports of a fire at the Abbott Loop Community Church at 2626 Abbott Rd. shortly after 6 p.m. Callers reported smoke, including one caller reporting an explosion.
ROOF SNOW REMOVAL PROTOCOLS AND CONSIDERATIONS
How much snow is too much?
Live loads are an important consideration when assessing rooftop snow and possible removal. You need to know how much snow and ice rooftaps can hold safely, what the effects are of ice buildup on roof systems, and how to properly remove the snow so that the building does not become structurally unsound and collapse while you are removing the snow.
Generally speaking – and depending on where you live – most flat roof systems are constructed to safely hold a maximum of 15 to 20 cm or ice or 35 to 40 cm of hard pack snow (70 to 80 cm of fresh snow).
There are many other considerations such as the engineering and age of teh building, or how often the roof can withstand the snow loads.
In Alberta, building codes (as of 2006) require roofs to withstand about 40 lb. of snow per square foot once every 50 years. In this fashion, one can predicate how much their building can withstand every x years.
If the snow load on your roof is getting close to the calculations above, you need to have the snow removed from your roof.
Time is also important when considering roof load capacity – this is called the fatigue factor.
Roof collapse can occur on roof systems that have half or less of the live load described above.
Measuring Roof Snow Loads
A “safe” amount of snow or ice on a roof is none at all. Removing the snow will mitigate ice damming, which will keep the roof membrane in a good condition. Regular removal will also keep the roof drains working properly.
When the ice and snow starts melting in the spring, be sure a knowledgeable roofing contractor or a trained maintenance person is regularly checking the roof drains or scuppers to ensure that the water is flowing down the drains, as opposed to filling your flat roof up like a pond.
If you are still convinced that you can remove the snow and ice from the roof yourself, please refer to our blog article here. We provide safety considerations as well as a “how-to” guide.
IN THE PRESS…
From the Edmonton Sun Newspaper:
“General Roofing Systems advises that the snow isn’t as much of the problem as is the ice build-up underneath. Snow melts, it freezes and then is covered by a new layer of snow. The process repeats until the ice sheet becomes too heavy for the roof to bear. Trouble may not show up until the spring thaw when water that ended up freezing in the attic melts and comes through the ceiling. Then, of course there is the possibility that all that weight will cause structural failure.”