The following report covers an ongoing file in which GRS is to replace a commercial client's flat roofing system. The article will be updated with an inspection and in-progress photos as they come in. Continue reading Flat Roofing Replacement, August 2015, Edmonton
Below you will find a photo journal from a commercial contract in High Level, Alberta. The work entailed a TPO flat roof recovery and sloped insulation.Background When a roof reaches the end of its life, our clients are faced with the choice of either a full replacement or a recovery. Roof recovery refers to applying a new system over an existing one when the roof is reaching its end-of-life (1). Depending on climate conditions, preference, or preexisting solutions, a roof recovery may be performed using TPO, EPDM, bitumen, cap-sheets and/or asphalt. Sloped insulation refers to the tapering that exists on an insulation system. As a weatherproofing measure, when precipitation reaches your roof, it will run off into the drain system down the slope. Call us today for a consult on which roof recovery system is right for your commercial, industrial, or residential environment. < End Journal > Code: HIGH Article Topics: TPO Flat Roof High Level Alberta. Contact Us Call our 24 hour emergency roof repair at 1.780.424.7663. Mail to: 3428 99 Street NW Edmonton, Alberta T6E-5X5. We service all of Alberta including Edmonton, Stony Plain, Spruce Grove, Fort Saskatchewan, St Albert, Sherwood Park, Leduc, Nisku, Beaumont, Lac La Biche, Grande Prairie, High Level, Westlock, Slave Lake, Edson, Drayton Valley, Devon, Camrose, Wetaskiwin, Tofield, Lamont, Morinville, Vegreville, Tofield, Millet, Calmar, Evansburg, Redwater, Onaway, Viking, Athabasca, High Prairie, Valleyview, Fairview, Peace River, Whitecourt, Mayerthorpe and many more rural areas and towns.
Below you will find a series of quotations for an existing commercial client. We had previously dealt with some leaks for them as outlined here. This time, the client required a roof recovery for a 28 ft. x 44 ft. garage. Client files request, April 20 2015:
I know that you quoted on the small garage, we would like another quote that requires the following: layout, retrofit, TPO roof, no asphalt.Quotation, April 20 2015:
- Layover, remove stone.
- Install new 2 in. polyisocyanurate and 0.45 mm TPO membrane.
- New flashing is required all around to match the front of the building.
- 5 ft. of cap
- 5 ft. of base
- 1x can of spray primer
- 1x 3 in. drain
- 1 can of mastic
- 1x roll of 6 in. reinforcement mesh
- Gum patches to three or more areas
- Replace the drain with a new 3 in. unit
- Roof replacement using an SBS 2 ply system
- Estimated time: 20 hours
Article: TPO Roof Repair. Flat Roof. Commercial Building. Hotel in Fort Saskatchewan Alberta.TPO Roof Repair, maintenance, and considerations for type of membranes in cold climates. TPO Roofing or Thermal Plastic Olefin Roofing is a single ply roof system that is used extensively world-wide. In most instances TPO is installed as a white or cool-roof. It can be installed in one of three ways. 1. Fully Adhered, 2. Mechanically Fastened, and 3. Loose Laid Ballasted. Single ply roof systems came along after tar and gravel and then torch-on SBS modified systems. It's primary advantage is that it is less costly for supply and install than torch-on and tar and gravel due to labor costs. Market acceptance in the USA (or in warm climates) is considerable and the product is effective in those climates. In colder climates, such as with most of Canada, TPO isn't installed as often as the USA and there are considerable studies that suggest that reflective roofing in Canada results in a negative net benefit and that reflective or cool roofing in Canada is prone to condensation issues. Visit these off-site publication links for more information about cool roofing membranes (reflective) in cold climates: 1. Calgary Says No to Cool Roofs. EPDM Roofing Association. http://www.epdmroofs.org/blog/2015/05/18/calgary-says-no-to-cool-roofs 2. The High Cost of White Roofs in the North. Huffington Post. http://www.huffingtonpost.com/charlie-soffel/the-high-cost-of-white-roofs_b_5623273.html?utm_hp_ref=green 3. Effects of Roof Color and Solar Reflectance on the Accumulation of Moisture in Roof Systems. Asphalt Roofing Manufacturers Association. http://www.asphaltroofing.org/effects-roof-color-and-solar-reflectance-accumulation-moisture-roof-systems
Repairing a TPO Roof (or any single-ply) Does Have Advantages Over Torch-On and Tar and Gravel.One advantage that single ply roofing systems have (TPO, PVC and EPDM) is that they are usually quicker to inspect and easier and quicker to repair. As long as it isn't a ballasted single ply roof. If it's ballasted with rock then this becomes a negative and not an advantage because it takes more labour to remove the rock for inspection and repair. Single ply roofing such as TPO, PVC, and EPDM also do not need open flame work such as with torch on modified bitumen roofing. If you get a roofer to work on your 2 ply SBS modified bitumen roof BE SURE they are insured for open-flame work! Also to consider is that torch-on roofing typically requires a more experienced technician than does single-ply and as the years go on there are more and more single ply techs and less that can repair torch-on and tar and gravel. The issues or pro's and con's listed above are why we typically encourage customers that are looking at single ply to install EPDM in a cold climate and not TPO or PVC. The net benefit is a consideration but also is the cost of installation and the cost for repairs and maintenance over the years. October 30, 2014: Crew Arrives To Complete TPO Roof Repairs. 10120 86 Avenue Fort Saskatchewan.
They have a leak in the south-west corner of the hotel. The roof is TPO. When I got up on the roof I picked at all the laps in the area in where it was leaking and on the top side of the slope that would of run through the area and they were all good. I did find a couple breaches in the system. One I fixed with TPO cover strip and the other with water cut off. Personally, I think the leak is coming from the stucco to frame work - there are cracks and holes all through it. Also there is a electrical conduit that runs along the parapet walls which is mechanically fastened and the conduit is attached with 1 inch screws and are popping out - this should be fixed (re-installed correctly or patched correctly) to prevent any further breaches to the system.Contact Us Call our 24 hour emergency roof repair at 1.780.424.7663. Mail to: 3428 99 Street NW Edmonton, Alberta T6E-5X5. We service all of Alberta including Edmonton, Stony Plain, Spruce Grove, Fort Saskatchewan, St Albert, Sherwood Park, Leduc, Nisku, Beaumont, Lac La Biche, Grande Prairie, High Level, Westlock, Slave Lake, Edson, Drayton Valley, Devon, Camrose, Wetaskiwin, Tofield, Lamont, Morinville, Vegreville, Tofield, Millet, Calmar, Evansburg, Redwater, Onaway, Viking, Athabasca, High Prairie, Valleyview, Fairview, Peace River, Whitecourt, Mayerthorpe and many more rural areas and towns.
Below you will find a series of field reports, quotations, and photo journals for a large industrial client in Edmonton, Alberta. Our roofing repair crew initially responded to a call for roof maintenance. Over the next two years, various sectors of the site would require complete roof replacement, gutter installations, fixture repairs, and ongoing leak maintenance. Quotation, May 9 2012:
- Engineered liquid rubber roof coating: 2-ply coat to complete roof, fastener replacement as required, sheet metal repair as required to achieve a water-tight state.
This product is the first product we have had as roofers that solves metal roof issues and has been extremely successful with considerable and complicated roof systems for a number of our Fortune 500 or multi-national clients.June 13 2012: We stopped by the shop en route to pick up a trowel, caulking, and wet dry gum (plastic cement) in case the leak was able to be fixed immediately upon inspection. On-site, the client lead us to the leak site where tiles were becoming stained. Visible sagging was noted. After removing the stained ceiling tile, it appeared that the leak was coming in around the RTU unit directly above someone's desk in the southwest corner of the top floor. Upon roof inspection, it was clear to me that the problem area was the plumbing vent in-between the exhaust fan and the RTU unit. It had previously been patched with plastic cement as a temporary solution. There are also a few other areas which could potentially leak in the future; a few gas line penetrations, gum cups around guy wire penetrations for antennae on the roof, and a few flashing issues around exhaust fans. Quotation, June 27 2013:
- Gutter replacement: supply and install industrial fabricated gutter system to the entire building
- Roof repair and maintenance overhaul: remove gravel, wash, repair, return gravel
- Complete roof replacement options: Spray foam (SPF), EPDM, 2-ply SBS modified bitumen (torch-on), 4-ply engineered liquid rubber roof, TOUGH ROOF
- Roof recovery options: Spray foam (SPF), 2-ply SBS modified bitumen (torch-on), 1-ply coat tar, 2-ply engineered liquid rubber
- 24x 205 L drums of MetalSafe B-300
- 24x 18.9 L pails of MetalSafe S-300
- 15x 18.9 L pails of TrowelGrade B-400
- 4x rolls of SBS cap
- 4x tubes of SOPRAMASTIC, caulking-style
- 2x caulking guns