Flat Roofing Replacement, August 2015, Edmonton

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. Inquiry Received: August 21, 2015 The customer reached out to GRS to provide a quotation on TPO replacement of their current flat roof system. We had technicians take measurements (16.5' x 18'), and delivered a quote to the client for their consideration. The roof itself is aged, and there is some definite water damage in both the location where the roofing membrane ties into the house and where the lap is. There is a sag in the ceiling's drywall, with some cracks and discolouration due to water leaking. When performing the replacement, the customer would also like to have the ventilation stack from an old wood-burning stove removed. The recommendation made by the investigator was that the existing roof be removed, all repairs made to the wood below, then insulate and install the TPO roofing surface. The client seemed to be in agreement, so we continued to prepare quotation for the services.   Quotation Delivered: August 25, 2015 We sent a quotation for the roof replacement services to the client, who had some questions about what the flat-rate quoted price included for services. As we normally do, we had included quotes for other viable systems that GRS might also install (EPDM, Tar and Gravel, BUR, etc.), so that the client understands that there is more than one way in which to surface the roof. Explaining these options to the client let us know that they were making an informed decision about what they would like, so we promised to move forward with the TPO roof replacements, and would get them scheduled in for service with a specific scope of work to carry out.   Roof Report: September 8, 2015 The team met with the client on site and got access to the roof. They moved the ballast on the roof from the west side to the east, and began pressure-washing the surface. There was a lot of dirt, clay, and debris mixed in that needed extra attention, which slowed things down. Half of the roof was prepared for the following day's work, but rain came in and cut the day short.
After moving the ballast to expose the surface, our inspection uncovered holes and tears throughout the assembly. In this instance, there was a large hole on the corner of a rooftop unit's detailing.
After the inspection, our technicians began the replacement by pressure-washing the entire surface.
The purpose of a pressure-wash is to clear the surface that is to be replaced from dirt, clay, and debris. Here is one half of the room completely washed down.
The mixture of clay and dirt was caked onto the surface, which required extra attention to remove. After cleaning the first half of the roof, we shit down the site when it started to rain.
  Roof Report: September 9, 2015 The team arrived on site for 6:45am and waited for a few minutes for the client to arrive and provide access to the roofing at 7:00. The team started clearing off morning dew/moisture and prepared the area for the liquid rubber application. Half of the team went out to the store to pick up six more pails of liquid rubber while the other half applied what was already on-site. They applied rubber to the first and second roofs (rubber lined and metal, respectively). After this, they prepared the gutter and sidewalls of the second roofing level. Once the west side of the first roof was cured, they moved the ballast back from the east side and began scrubbing the area to prepare for the following day's work. There was some light rain that hindered further progress on the roof, but the area was prepared to keep going once it dried up the following day. There is half of the first roof to complete, and most of the second roofing level to do in addition to patch and detail work; the crew left for 5:20pm to return the next day.  
After arriving on-site at 6:45 am, we began by clearing the roof of dew and moisture from the rainfall. The first part of the replacement entailed coating the surface with liquid rubber.
The second scope of work entailed applying liquid rubber over an existing standing seam flat metal roof.
Old spot repairs around the rooftop units had gone past their life cycle, which provided leak entry points during periods of rainfall.
Some of the metal seams were also exposed at the parapet walls, forming small pockets between the step flashing and roof.
Liquid rubber coatings being applied to the metal roof.
Concurrently, detail work was being done on the second level of the roof.
Post-application photo with one half of the second roof completed.
Detailing around another rooftop unit with significant tearing over the corner. We moved onto patching and liquid rubber applications over these deficiencies.
This report will be updated with photos and field reports as the become available. CODE: 9260 Contact Us About Flat Roofing in Edmonton 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.

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