Photo Journal: TPO Flat Roof Recovery and Sloped Insulation in High Level, AB

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.

Torch-On Roof Replacement High Level, June 4 2015.

Article: 2-Ply SBS Modified Torch-On Roof Replacement High Level, Alberta. Low Slope Commercial.

Torch-On Roof Replacement. 2-Ply SBS Modified Low Slope Commercial Roof. SBS modified torch-on roofing is one of the more widely used flat roof membranes in Alberta. I don't know the industry wide percentages, but I would venture to guess that we install about 30% of our roofs with torch-on. EPDM would be about 45% and the other 25% would be a mix of the other types listed below. When replacing a flat roof your primary options are traditional tar and gravel, 2 ply torch-on, single ply membrane (TPO, PVC, or EPDM), spray foam (SPF) or some form of fluid applied. Visit our local Edmonton roofing division website for a more detailed description of the various flat roofing membrane options. For torch-on, common application methods are conventional roof systems and inverted roof systems. In the manufacturing process modifiers are added to standard roofing asphalt to replace plasticizers removed during a distillation process. Bitumen is then reinforced with fiberglass or polyester fiber matting in order to increase durability and strength. SBS (styrene-butadiene-styrene) increases the flexibility of the membrane and allows it to have stronger expansion and contraction capabilities - the synthetic rubber additives increase flexibility of the membrane. Modified bitumen roof systems can be installed with torch, fluid applied asphalt, or cold adhesive. A typical SBS modified bitumen roof system (as in site report below) is a two-ply application applied with a torch using rolls of membrane that overlap the edge of the previous roll. In the example below the roof board (or fibre board) is what we refer to as an FR Board and it has the base sheet SBS applied to the fibre board before leaving the factory. In this instance the base sheet FR board is mechanically fastened to the roof deck with the cap sheet being torched on after. The benefits of 2-ply SBS modified roofing are:
  1. Torch-on SBS modified roofing is very durable. This is important for high traffic roof assemblies. This would include commercial or industrial roofs where there are perhaps a lot of rooftop units, satellites, communication towers and the like and various service technicians attending to the roof regularly.
  2. It is weather resistant and can handle impact that perhaps other membranes would have issue with.
  3. It is moderately easy to repair and maintain.
  4. The factory manufactured rolls make quality control easier than with tar and gravel BUR roofing.
  5. It is moderately flexible. This is important for climates such as Canada.
In Canada we recommend our customers seriously also consider EPDM vs. torch-on if the roof has next to no foot traffic. EPDM doesn't handle foot traffic as well as torch-on but is easier and much less costly to repair. Torch-on requires a contractor with open-flame insurance - open-flame insurance is costly and many contractors do not have it. So EPDM increases the service pool of applicators that you can call for repair. Torch-on also typically comes with a senior journeyman that can be more costly than a technician for EPDM. EPDM is actually simple enough for most handy types to repair as a do-it-yourself and torch-on should not be done by anyone but a senior qualified and open-flame insured roofer. Below is a brief installation report from one of our crews installing SBS on a commercial building in High-Level Alberta last winter. October 25, 2014: Crew Arrives On-Site for Pre-Installation Meeting. Crew arrives at job site in High Level at 9 am. We conducted a tool-box meeting for safety compliance. We reviewed the scope of work and the existing roof membrane. It was a roll-on mopped asphalt roof membrane that was in very poor condition.
Torch-On Roof Replacement - Flat Roof Pre-Installation Meeting.
Torch-On Roof Replacement - Flat Roof Pre-Installation Meeting.
Pre Installation inventory and tool count.
Pre Installation inventory and tool count.
Another photo of the old roof condition.
Another photo of the old roof condition.
Roof Loaded
Roof Loaded.
  October 26, 2014: Crew Arrives On Site To Begin Work. Crew arrives on site to begin work. The work we did is stripping, then torched in the roof base. We moved the material to other side of roof and prepped  for the next day. Base sheet FR board was installed.
2 Ply SBS Base Installed
2 Ply SBS Base Installed.
Base Applied
Base Applied.
  October 29, 2015: Crew Arrives Back To Complete Job.  Crew came back to work and installed 250 frost grey cap sheet to the roof.
2 Ply SBS Flat Roof Replacement
2 Ply SBS Flat Roof Replacement
Flat Roof Torching
Flat Roof Torching
  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.  

High River SBS Roof Replacement, October 2014

This commercial client required a roof replacement and elected to have GRS install a 2-ply SBS Modified Bitumen system. This was done in High River, AB, far to the north of the province.   Roof Report: October 24, 2014 The team arrived on site for 9am and began to get it prepared to commence work the following day. Material lists were organized and ready for purchase, and the tools were loaded onto the roof. The crew waited for the dump bin to arrive, and once it had they went off to the store to pick up the last of the materials needed for the job's beginning. They ended the day for 3:00pm, leaving the job site for the evening.   Roof Report: October 26, 2011 The four team members arrived for 8:00am and worked for a few short hours until 11:30. In their time on site, they stripped off the torch-on system and moved materials to the side of the roof where they would begin work the following day. The weather forecast called for heavy snow, and ice crystals were building on the roof even after torching. They called it for the day at 11:30am, and would return the following morning.   Roof Report: October 29, 2015 Starting the morning at 7:30, the team got to work with chipping away ice, blow-drying the roof, and cleaning it off for work. Once done, they got to stripping outer walls, putting up around 25' of fascia, and stripping the parapet walls too. They installed two high domes and starting putting more capping on. Heavy snowfall came in just before 5:00pm, so the team wrapped up the site for the day.   Updated Quotation Delivered: October 30, 2014 We sent over an updated quote to the client to show payments that had been applied to date. There was some uncertainty remaining about the amount of sheathing requiring replacement, so the final quote was yet to be confirmed.   Roof Report: October 30, 2014 This day saw a lot of ice chipped away and snow swept off of the roof. They team torched the capping and installed scupper drains and the necessary downpipes. They left the job site for 4:00pm once word arrived that some more of the materials for the job site on order had arrived. They got the materials and returned to the town; an 8-hour round trip. Roof Report: October 31, 2014 There was some light rain in the morning, but not enough to cancel the day's progress. The rest of the roof system was ripped off and the rotten plywood underneath replaced. The last scupper drain was installed, and some more of the parapet wall was stripped. Once done, the last of the capping was torched on and materials were moved and prepared for the next day. After clean-up, the team departed the site for around 5:30pm. The day's efforts saw 25 sheets of OSB plywood 7/16 installed, which allowed for a final quote to be delivered to the client as everything that would be exposed and inspected had been so. High Level-20141031-03223 High Level-20141025-03127       Roof Report: November 2, 2014 This day, the team met on the roof for 8:00am and got to work. Their task for the day was working on getting the enco new paper was completed, and the job site was cleaned up afterwards. They left the site at 1:00pm, another job completed.     CODE: 10006 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.