Survey of the Commercial Roofing Process

General Roofing Systems Canada provides repairs to Commercial Roofs throughout Canada. Commercial Roof Repairs 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

Maintenance, Restoration, or Replacement?

When reviewing the process of commercial roofing, the first step is to decide what method of roofing is required. Of course, there will be decisions in regards to the metal used, yet this all depends on whether or not you have a flat roof. For example, you may be looking to repair your roof, perform annual maintenance, completely replace or restore your existing system.

Repairing Your Commercial Roof

Commercial roofing repairs are best done by a roofing contractor that complete repairs on a daily basis and who is aware of all the commonly accepted standards. GRS employees are highly trained to work with all varieties of commercial roofs; our crews undergo extensive training that help them to assess and repair any and all issues. Flat roof repairs are specific to the type of commercial roof such as; Tar and Gravel, Torch-on SBS, TPO, EPDM, PVC, Roof Coatings, or SPF – Spray Foam. It is important to have roofers that are aware of the type of commercial roof membrane that is being repaired.

Metal roof repairs on commercial buildings are also type-specific. These common types are are metal cladding roofs, standing seam metal roof systems, and coatings with a reflective coating or black rubber liquid coating.

The objective is to locate a commercial roofing contractor that has technicians with the knowledge of all commercial roof types.

Preventative Maintenance

Commercial roofing systems require regular maintenance. In most instances maintenance on a commercial roof (flat roof) should be completed a minimum of twice a year. It is recommended to have this completed once in the fall and once in the spring. GRS has specific commercial roofers that specialize in roof maintenance. Our roofers are aware what to look for and how to solve specific commercial roof problems. Our web site contains a step by step list for commercial flat roofing repair and maintenance:

Metal Roof Maintenance

Metal commercial roof systems also require regular maintenance. Maintenance should be performed on all the metal seams, metal roof fasteners, and roof openings. Sometimes this only requires a simple process of caulking (be sure to use high-end metal caulking). Yet with scenarios, when the metal roof is beginning to fail due to rust or expansion/contraction of the metal seams and holes for the fasteners, more extensive roof repair or roof restoration becomes a necessity. This is another area where it would be beneficial to have type-specific contractors completing the work.

Our roofing blog has numerous articles regarding metal roofing, metal roof repair, and metal roof restoration. Simply search your topic by category on the left hand side of the page.

Roof Restoration

Restoring Your metal or flat commercial Roof when regular commercial roof repair and maintenance doesn’t alleviate the problems you are experiencing with your metal or flat roof, more extensive restoration is required. One significant advantage of restoring your commercial roof rather than replacing it is the tax benefit. Roof restoration is considered maintenance and not typically considered a capital cost as it would with a complete roof replacement.

Metal roof systems are filled with challenges, especially in colder climates like Alberta and Saskatchewan. For example, in Edmonton, AB last winter, the snow loads were so immense with the ice damming on the metal roofs, as well as the heavy weight loads, that several metal commercial roofs were affected. Our metal restoration crews have been working nonstop since last winter to repair and restore metal roof systems on numerous commercial and industrial facilities. The advantage of having a metal roof on your commercial facility is the longevity of the material. Metal roofs are known to last several decades before requiring full replacemetns.

The inherent challenge with commercial metal roofing is that the metal expands and contracts. This is especially true in our unpredictable Western Canadian climate. Unfortunately, many leaks occur as a consequence.

When thinking about restoring a metal roof it simply comes down to two things. First is whether or not you would want white reflective metal roof restoration, or do you want a black roof?

In today’s market, there are several advancements to metal roof coatings. One primary example would be the liquid rubber polymers that were created for waterproofing commercial metal roof systems.

The challenge with reflective coatings for metal roofs is that coatings such as acrylic, which are highly reflective, also contain the disadvantage of cracking and peeling. The important items to be considered when choosing a restoration process or coating for your commercial roof is to be sure that the roofing contractor you hire is experienced and knowledgeable as to what is required. It is also important to inspect the coating material being used on your commercial roof. This is important due to market factors drastically changing over the past few years.

The same applies for flat roofing as it does for metal as we described above.
Coatings for commercial roof systems in this day and age have radically changed as restoring a flat roof today is not the same it was 3 years ago. At one time (and we still restore tar and gravel commercial flat roof this way), we would re-coat flat roofs with bitumen or tar from a hot kettle. Or in the case of a rubberized asphalt commercial flat roof, we would re-coat with hot rubberized asphalt.

Commercial roofing today has many more options. More recently many commercial property owners have been having roofing contractors spray foam their roof systems. With this process you skirt around the entire old method all together. Once the spray foam has been laid down you then add an acrylic reflective top coat to the SPF.

The process of spraying foam over an existing commercial roof is highly effective and cost efficient  – although this isn’t always the best method for an extended amount of time. There are coatings that are asphalt based that contain fiberglass that can be used to coat roof systems and emulsions. And then more recently elastomeric coatings have become available. This newer type sprays right over top of the existing system. Finally the most recent to come forward on the market is liquid rubber coating. Liquid rubber coating has been an excellent success for both roofers and owners alike.

Roof Overlays or Retrofits

An example of a roof overlay or retrofit is when your current commercial roof system has a tar and gravel roof. Instead of coating the roof and completely ripping out the roof and replacing it entirely, you can retrofit or recover it. There are many forms of flat roof recovery. One method is for our roofers to scrape or spud the gravel off. Our roofers will then install an insulation board and the roofing membrane right over top. For more information on retrofitting you can reference our blog and website.

Complete Roof Replacement

Complete roof replacements are a massive undertaking. In order to have this procedure completed correctly it is extremely important to choose the right contractor for your project. The contractor you choose must have roofers that are trained and have accurate knowledge of all roofing systems. In addition to this you will need to choose the right method of roof replacement or retrofit. Once you have done that, the next item to select will be the right membrane and search out a reasonable competitive price.

GRS has written extensive articles to assist commercial property owners with the process of completing roof replacements, some of which are on our blog and website. Here are some articles for your consideration when planning a commercial roof replacement:

https://www.grscanadainc.com/Commercial_Roof_Replacement.html – Considerations for Commercial Roof Replacements

https://www.grscanadainc.com/Replacing_a_Flat_Roof.html – The process of Commercial Roof Replacement

Until next time,

The Roofers at GRS

CONTACT US
General Roofing Systems Canada (GRS)
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com

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.

Industrial & Commercial Roof Waterproofing Solutions

Metal, Flat Roof or Waterproofing Problems?

General Roofing Systems Canada has been installing liquid rubber coatings on an increasing number of commercial and industrial applications lately.  It is the first time that a waterproofing product has come along that is truly predictable and highly effective. The development and use of liquid rubber coatings has solved several roofing and waterproofing related issues in both above and below grades in a very effective, predictable, and cost effective manner.

Liquid rubber coatings: liquid rubber coatings are made up of 100% solids, the coatings will not shrink as liquid rubber has superior adhesion that will bond to almost any construction material or substrate. They have elongations that exceed 350% and in some instances up to 1000% with a memory greater than 95%.

Liquid rubber is solvent free with no VOC’s and are compliant with all known environmental and OSHA requirements.  It can be used in confined spaces with-out respiratory equipment.

The coatings are resistant to thermal shock and will not crack in extreme cold, it will not slump or soften in extreme hot temperatures. Liquid rubber coatings can also be painted and are UV resistant.

Liquid coatings can be trowel , squeege , and spray applied.

Unlike urethanes, polyether-based liquid coatings and sealants will resist the damaging effects of sun (UV), rain, with both cold and hot temperature extremes.  Unlike silicones, polyether liquid rubber coatings are paintable and do not smell therefore enabling it to be used in confined spaces.

Here are just some of the commercial and industrial benefits of the liquid rubber coatings:

Metal Roofing and Flat Roofing: Liquid rubber is an excellent solution for metal and flat roofing. It is a hot rubberized asphalt mix that roofers have been installing on substrates such as concrete for decades, but what we are speaking of here is cold liquid rubber being applied. Liquid rubber is an excellent solution for flat roof restorations and metal roof problems.

The Liquid rubber coating is an excellent solution to all metal roof issues. The liquid rubbers traits help to resolve issues such as rust due to the rubbers excellent rust inhibitors. It is able to seal leaks without the roofs expansion or contractions being an issue due to the 350% – 1000% in elongation with a 95% memory. Liquid rubber has no VOC’s (100% VOC compliant) and is a true green roofing product. With a 10 year warranty extendable to 20 years on maintenance contract at 1/3 to 1/2 the cost of replacing a flat or metal roof, nothing comes close to life cycle costing of liquid rubber roofing.

Below Grade Waterproofing: Liquid rubber coatings can be used on almost any surface in any location that you may need waterproofing, including concrete. It can also be used on equipment wells, in between slab waterproofing, and other underground construction scenarios.

Pond Liners: Pond liners are typically applied with some form of rubber such as EPDM. It enables you to spray on the liquid rubber efficiently and with whatever level of thickness required. The American military sprays liquid rubber onto the containers that the troops drink from, if they use it for that then it is certainly good enough as a pond liner.

Eaves troughs – Gutters: Gutters can be coated on the inside to stop leaks.

Planter Boxes: There is nothing better than using liquid rubber to seal planter boxes. Liquid rubber waterproofing will help keep the water in the box.

Green Roofing Systems: Liquid rubber is ideal for green roofing as it is VOC free!

Plaza Decks: Plaza decks can be a difficult waterproofing scenario for facility managers due to the constant movement. Yet with the liquid rubber waterproofing it will outperform most applications. The movement of the structure no longer will be an issue with the elongation ability of the rubber.

Concrete and Asphalt Repairs: Sealing the cracks in concrete on asphalt is an ideal application for liquid rubber

Bulkhead Penetrations and Joints: Liquid rubber coatings will not shrink therefore it can be used in waterproofing bulkhead penetrations and joints.

Commercial and Industrial substrates and construction materials that liquid rubber can be applied to: ISO Insulation Board (such as flat roof ISO), Concrete, Steel, FRP, Drywall, Wood, Plywood, OSB, Asphalt, EPDM, TPO, PVC, EPS, SBS Modified Cap Sheet and SBS Base Sheet, Fiber, Board, Dens Deck, FRP (Fiber Reinforced Plastic), etc…

Liquid rubber elastomeric coating videos: 

 

liquid rubber for tar and gravel roofing repairs

A number of liquid rubber coating applications are demonstrated such as retaining walls, underground tanks, horse stables, water features, landscaping, asbestos encapsulation, below ground tanking, drainage dressing, power stations, tile adhesion, balconies, terraces, etc.

US roofing contractor applying liquid rubber to a flat roof – tar and gravel flat roof restoration process.

UK roofing contractor applying liquid rubber to metal roofing, rust, concrete, etc.

Liquid rubber coating being used to repair a tank.

Until next time,

The team at GRS.

CONTACT US:
General Roofing Systems Canada (GRS)
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com.

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.

Drone Footage: Flat Roofing Raw Drone Video Footage

Flat Roofing Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Cranbrook, Kelowna, Vancouver, Whistler, Winnipeg, Toronto and points between. Alberta, Saskatchewan, British Columbia, Manitoba, Ontario. 

Drone Video Footage of a Commercial Flat Roofing Project Installing Fully Adhered EPDM Membrane.

This particular flat roof is 4.5 football fields in size. It is a tar and gravel flat roof on an industrial / commercial building that has a failed roof system. We are installing a fully adhered 60 mil EPDM flat roof system on the building.

In colder areas of Canada an EPDM or SBS Modified Torch-On flat roof system are preferred. In warmer areas such as Vancouver, downtown Toronto, or in warm areas of the USA reflective systems such as TPO, PVC or reflective roof coatings should be considered.

The advantage of using EPDM (especially fully adhered) in colder areas like Alberta, Saskatchewan, Manitoba, some parts of BC and Ontario is that EPDM expands and contracts very well with the change in temperatures. 2 Ply SBS Modified Bitumen Torch-On flat roofing is stronger for foot traffic (if your roof is going to have a lot of foot traffic) but it is not near as flexible as EPDM.

We recommend fully adhered EPDM over mechanically fastened EPDM membranes and loose-laid EPDM membrane roof assemblies. Loose-laid EPDM is much cheaper because the install time is shorter than with fully adhered (and the glue is expensive with fully adhered) but the disadvantage a loose-laid EPDM ballast system is maintenance costs in future. If you have to move the rock ballast to locate leaks in the future then this can be very costly.

For advice on various flat roof systems give us a call or email us anytime!

Until next time,

The Team at GRS

 

CONTACT US:
General Roofing Systems Canada (GRS).
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com

Flat Roofing 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.

 

Calgary Commercial Roofing

General Roofing Systems Canada Repairs, Replaces, and Maintains Commercial Roofing to the Greater Calgary Area. Below is a Commercial Roof Installation Project Spotlight of the MOVAC Head Office Commercial Roof Installation.

Calgary Commercial Roofing Project Spotlight

Commercial Roof Installation Scope
MOVAC Head Office
New Construction
Engineered Sloped Roof Insulation
4 Layers Mop on Bitumen
SBS Modified Base Torch On
SBS Modified Cap Sheet Torch On

This commercial roofing project that is  located in the South East of Calgary, Alberta was for a new commercial building for Movac. The project included vapour barrier including 4 layers of mop on bitumen, a sloped engineered insulation package from Plasti-Fab and IKO base and IKO SBS modified bitumen cap sheet.

 

Calgary Commercial Roof, Bitumen Mopped
Calgary Commercial Roof, Installing Tar Flood Coat
Calgary Commercial Roof, Mechanically Fastern Roof Insulation
Installing Engineered Slope Insulation
Calgary Commercial Roof, Tar Flood Coat over Roof Insulation
Commercial Roof Ready for Rooftop Units
Calgary Commercial Roof, Tar
Tar Roofing –  in Calgary, AB
Calgary Commercial Roofers, Base Mechanically Fastened to Steel Q Deck of Roof
Roof Board installed to Steel Q Decking
Calgary Commercial Roofers, Roof Hatch Install
Roof Hatch installation.
Calgary Commercial Roofers
Bitumen flood coat to completed.
Calgary Commercial Roofing
Fibre board mechanically fastened prior to SBS Modified Torch On.
Commercial Roof Calgary
Rolling out hot bitumen layers to this .
Commercial Roofers Calgary
Commercial roof system – shows layers of the roof – almost ready for SBS modified torch.
Commercial Roofing Calgary, SBS Modified Torch On, Metal Roofing, Flat Roofing
Commercial roof has SBS Modified Torch On Cap Sheet Installed (grey torch on cap).
Commercial Roofing
One of our Calgary Commercial Roofing Roofers Got Creative by taking photo from inside of where roof scupper would be installed.

 

Visit our main website for more information on our Calgary Commercial Roofing services.

 

Until Next Time,

The Roofers at GRS

CONTACT US:
General Roofing Systems Canada (GRS)
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com.

Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Canmore, Lethbridge, Medicine Hat, Vancouver, Whistler, Cranbrook, Saskatoon, Regina, Winnipeg, Toronto and all points between. British Columbia, Alberta, Saskatchewan, Manitoba, Ontario.

Commercial EPDM Flat Roofing in Northern Alberta

General Roofing Systems Canada installs Commercial Roofing throughout Canada. Commercial Roofing in; Toronto, Calgary, Red Deer, Edmonton, Fort McMurray, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Banff, Cranbrook, Kelowna, Vancouver, Whistler, and points between.

Commercial Roof System Alberta - EPDM Roofing
Commercial Roof System Alberta – EPDM Roofing

Our Commercial Roofing Division just completed an EPDM roof in North Alberta (between Edmonton and Fort McMurray). The crew took some pictures of the completed roof which we thought we would post. Many prospective flat roof purchasers, when considering a flat roof replacement, ask what an EPDM roof looks like. Our photos should be able to help.

Commercial Roofing, EPDM Roofing, Alberta, South of FortMcMurray Commercial Roofing, EPDM Roofing, Alberta Commercial Roofing, EPDM Roofing, Northern Alberta Commercial Roofing, EPDM Roofing

The commercial roof in the pictures is a fully-adhered .60 mil EPDM roof membrane from Mule-Hide. The EPDM is adhered without an open flame or heat welder. Commercial clients appreciate the low-risk with applications in this respect. Additionally, EPDM is now available with a 20 year warranty on the membrane for commercial roofing projects.

Our Commercial Roofing services are available throughout Western Canada. GRS also runs a 24 hour 7 day week Commercial Roofing Repair Service.

The GRS Commercial Roofing division is insured with 5,000,000.00 Commercial Liability, Commercial Flat Roof Certified, BBB Accredited, WCB Registered, and Licensed.

Miscellaneous General Roofing Documentation

Request Commercial Roof Replacement or Repair Estimate

CONTACT US:
General Roofing Systems Canada (GRS)

24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com.

British Columbia | Alberta | Saskatchewan | Manitoba | Ontario

Commercial Roofing

General Roofing Systems Canada performs commercial Roof replacements throughout Canada. Commercial Roof Replacement: 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.

Commercial Roof Replacement – Trucks are unloaded and materials brought to the roof.

Commercial Roof, Insulation for Flat Roof2
Commercial Roofing: 1.877.497.3528 | General Roofing Systems Canada

With the temperatures in Edmonton, Alberta being close to 30 degrees, our commercial crews were faced with the challenging task of having to unload several materials onto a roof in busy downtown. This task was exceptionally strenuous due to the heavy/large capacity of materials such as; engineered sloped insulation and craning flat roof materials.

Commercial Roofing2
Commercial Roof Insulation

Our crews had to shut down and block off a section of the downtown core due to requiring; two sloped insulation semi-trucks, one crane and another large semi that held the extra materials. Despite the chaos of the job, our Crews were able to complete the task within a short time span. The commercial roof that the materials were loaded onto, is now ready for replacement. Over the next month one will be able to notice the transformation taking place.

Due to the extreme heat several roofing crews along with GRS’s, were ending shifts early. When the temperatures are close to 30 degrees on the ground level, you can almost guarantee that the temperatures on the roof will be closer to 50 degrees, if not higher.

This will be an ongoing project with GRS, We hope to post pictures soon as the job progresses.

Commercial Roofing / Flat Roofing – Our Web & Blog Links:

https://www.grscanadainc.com/Commercial_Roofing.html

https://www.grscanadainc.com/Flat_Roof_Replacement.html

https://www.grscanadainc.com/Replacing_a_Flat_Roof.html

https://www.grscanadainc.com/Repairs_to_Flat_Roofs.html

Until next time,

The Team at GRS

CONTACT US:
General Roofing Systems Canada (GRS)
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com

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.

EPDM Commercial Roofing Project in Edmonton, May 2011

EPDM Commercial Roofing Job-site Progress

General Roofing Systems Canada installs EPDM roofing systems throughout Canada. Our roofing services are available in Toronto, Calgary, Red Deer, Edmonton, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Kelowna, Vancouver, Whistler and points between.

Field Report, May 2 2011:

Commercial Roofing Project in Progress (EPDM)
Photo shows the crew installing the roof board (mechanically fastened) prior to EPDM being installed and the construction of the roof parapet wall (plywood sheathing).
We promised follow-up pictures of our Commercial Roofing Project on Jasper Avenue in Edmonton, Alberta to assist owners of commercial roof systems to visual the process of a commercial roof re-roofing process (more specifically an EPDM Commercial Roof Recovery System).

The photos in this post show today’s progress on the EPDM Commercial Flat Roof Recovery system.

Material Used:
  • The EPDM is a Carlisle EPDM (labelled under the Mulehide name).
  • The sheathing at the roof parapets is 3/8″ spruce.
  • The ISO board is a standard IKO 1″ ISO mechanically fastened.

 

Commercial Roofing - EPDM
ISO insulation is mechanically fastened prior to fully adhered EPDM installation.
The old Built-Up Roofing (BUR) system had the gravel removed, was skinned (ripped) to the fiber board, a 1″ ISO insulation board mechanically fastened, any wet insulation removed, and the commercial roof parapets had the metal removed as required. Sheathing installed to the parapets and along any roof penetrations, upstands, etc. as the EPDM cannot be adhered to the metal flashing around the skylights, or to anything with asphalt present.
For commercial re-roofing, this EPDM roof recovery system is used often and in many instances is an excellent alternative to a complete removal of a BUR roof system when doing a commercial re-roof. The idea of taking an old built-up tar and gravel roof completely out and throwing it in the landfill not only costs needless money, it is harmful to the environment, and a roof recovery has the same life-cycle as a complete commercial roof replacement.

 

Commercial Roofing, EPDM, Roof Parapet Construction
General Roofing Systems Canada (GRS) worker installing plywood sheathing at the roof parapet walls.

 

Until next time,

The Roofers at GRS

CONTACT US:
General Roofing Systems Canada (GRS)
24 Hour Emergency Roof Repair: Call +1.877.497.3528 toll-free.

info@grscanadainc.com

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.