General Roofing Systems Canada provides metal roof replacements throughout Canada. Metal roof replacements 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.
Metal roofing is a vague word in the roofing world as it can be used to refer to a variety of systems. There are metal roof shingles, steel shingles, metal slate profile shingles, metal shake-looking shingles, metal panels, standing seam metal roofing, corrugated metal roofing, metal roof tile that are coated with granules… you get the point. The options in metal roofing are almost endless now.
One consistency that remains among the variety available to you is this: metal roofing can last longer than any other kind of roof’ however, a metal roof that is installed incorrectly will only last as long or be as durable as the workmanship of the install. If the underlay, or the venting of the roof system/attic is not correct, then problems such as leaking and ice damming will occur. With the weather that we have been receiving this year, one might see their metal roof may leak in multiple locations as time goes on. It is a frustrating experience living under a metal roof that has not been installed correctly.
To Repair or Replace?
Yesterday we had an inquiry come into our call center that is very common for us to receive. We felt this particular case would be a good addition to our blog in an attempt to help clients in their future endeavours while completing roof projects.
On Monday, Jul 25, 2011 at 1:27 PM, the client wrote:
We have an interlocking style metal roof that was installed by company 5 years ago by the previous owners. The roof leaks in the winter as a result of ice damming in the valleys, and in the spring shingles annually become loose (and have blown off) on the edge of one of the valleys from the ice sliding off. I am tired of dealing with the company (long story) and we are wondering if there is any way to repair rather than replace what they did. We have a log house with cathedral ceilings so I suspect we need to try to improve the airflow under the existing metal shingles. I don’t know what it looks like between our open ceiling and the metal shingles above (regarding insulation and air flow). There is no venting other than vented soffits (as far as I can tell). Is there any way to seal the metal shingles so water doesn’t flow back up under them? I don’t know if any waterproof barrier was used in the valleys and I don’t think the roof was installed very well in some parts. After talking with the previous owners a couple years ago, I know they weren’t satisfied with the installation of the metal roof, but they ended up having to relocate before going through a winter.A couple of other things to note; a few of the metal shingles were damaged when we were trying to remove the ice from the roof this past winter, and when we had heavy rain, the water comes off the roof before making it to the eaves.I attached a couple of pictures of the roof so you can see the design.Based on these pictures, if we had to replace our roof, what would be our best options (type of shingles, venting, etc.), and how could we reduce the potential for ice damming and leaking? How much would you estimate replacing a 1400+ sq. ft. home’s roof with different types of materials? Is there a guarantee on the ice damming/leaking after the roof has been replaced? Is there anything else I need to know or can I provide you with more information?
Good morning,I’m the Project Manager for GRS. I travel across Alberta solving roofing problems. However, it’s peak season and I may not be able to get out and take a look as quickly as I would like. That being said, what I am going to do is send this email to our two senior sloped technicians/foremen at GRS as well as our scheduling manager.Our scheduling manager will keep you informed on our work in progress, and either myself, or one of our foremen, will come out to meet you. In the meantime, I’ll offer for them to chime in their input based on your email and photos (great email by the way – it helps us a lot).Here’s is my opinion in regards to your questions….1. From the perspective of someone that sees literally thousands of roof problems a year, my first advice would be to not listen to just any idea of repair from just anyone. Metal roofing is a specialty. A very common thing we see is homeowners trying different “metal roof” contractors in haste and it tends to end with negative results. Both of our foremen are very senior technicians that would not have you running around a circle. If we don’t get to you as soon as you like, and you hire someone else, please make sure to validate the experience of the technician. It would be more beneficial to be thorough with your next selection as any experienced person can rattle off hundreds of client situations and references. In our case, we lay out our experiences on our blog to provide our clients and future clients with quick and easy access to references.2. I think the end result of your situation is going to be a new roof replacement. Now I understand this is not what you want to hear, and you may find it convenient in a consumer’s mind for me to say. However, I will explain the reasoning behind my conclusion. We don’t need to sell you a roof, we’re always over-booked so the motive isn’t there. Secondly, we see these installation issues all the time; our blog is full of how to do it right – and when it isn’t done right, it is almost impossible to correct. However, in saying that, both myself and my technicians may assess your building and be able to find a less expensive solution.3. Based upon your descriptions, I am thinking that it is an inherent design/installation issue. Metal expands and contracts and is a water shed system – not waterproofing. The roof underlay installation is flawed at the valleys. At minimum, I would think the valley areas would have to be ripped out (probably 5 feet on either side) and proper underlay installation executed and metal tiles put back in or new metal tiles placed.4. Even after doing all that, it is a low slope roof, and you may have intermittent issues either way. That is how I end up at the roof replacement as an end result.5. With respect to ventilation, that likely could be assessed over the phone with one of our foremen.So I may not have helped or may have, but the bottom line is that typically the best thing to do is to start over with a roof replacement. Get the underlay, the ventilation and the water shedding product right. Once this has been completed, I believe your issues will be resolved.Thanks
Thank you for replying so quickly. I suspected that we would have to replace the roof. This isn’t a rush job, but if we could get it done before snowfall, that would be great. If we have to over-winter this roof again, is there anything we could do in the valleys temporarily? Like heat cables or….? The interior log walls got water staining on them last year and I am concerned with the condition of the wood below the metal tiles in the valleys. In the case with a low sloped roof, would asphalt shingles be a better alternative to metal?Please put me on the waiting list for an assessment.
Good morning,No problem. The day’s just getting going here so I had the time.With respect to roof replacement before winter, yes this is very possible. However, I would like either one of my foremen or myself to look at your property prior. I would like to make an attempt at finding a less expensive solution.If for some reason you were thinking of not approving the work before winter, heat cables aren’t a good solution. Short of using a high quality tarp on your whole roof, it won’t help.Metal roof systems are fine as long as the underlay is correct. Shingles won’t leak as easily, but don’t last as long. Any roofing product will work as long as the roof underlay and venting is correct.We will get out to your property as soon as possible to meet you and take a look.Thanks
General Roofing Systems Canada (GRS)
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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.