Edmonton Commercial Flat Roof Replacement, January 2015

This commercial client in Edmonton was presented with a quotation for a flat roof replacement. The report follows the crew as they performed the replacement over the course of several months. Scope of Work:
  • Scrape gravel down to existing 4 ply membrane and take down to dispose.
  • Supply and glue down a FR board (1/2 inch fiberboard adhered to a 95 gram sanded poly sheet) and seal all laps.
  • Supply and back torch a 180 gram armour bound peal and stick up walls and all penetrations.
  • Remove and replace any wet insulation.
  • Owners to move and re-position satellite and communication systems.
  • Clean all debris and haul away.
Roof Report, January 21, 2015:
We arrived on site at 2:10 pm and I got set up to continue with the cap stripping. At the same time we were waiting to see what was going to happen with the weather since it was still drizzling. I went through the safety paperwork and then we helped with removing the garbage from the roof and brought it to the bin. 20141212_14051920141212_195820 20141212_195807 20141212_140503 Roof Report, January 23, 2015: After our toolbox meeting we proceeded to install FR board on the upper mechanical roof and did so until the point of satellites in all directions. We then installed peel and stick stripping wherever possible and sopramastic waterproofing in all other protrusions.
Cleaned up and left site at 4:30pm.
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Roof Report, February 12, 2015:
This morning after we were done with the safety reports, we went to the upper roof and continued with the base seal tie in. I had two other crew members remove snow from the entire upper roof while I started to install peel and stick on the curbs. After I was done with the curbs on the north side of the roof, I installed patches over the plates and installed gussets were there were none. I also found several spots that needed patches in the field and repaired as required.
Roof Report, February 14, 2015:
Started to lay in FR board where they moved the satellite towers. Once we got the base done on one I had a crew member start capping it in while myself and another crew member started to base in the next section. Both sections were capped by the end of the day which made the client happy. Then I stayed on site to complete fire watch.
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Roof Report, February 18, 2015:
This morning we started on completing the NE corner of the roof by installing the last of the FR board. We also started sealing around the curbs and perimeter.
We then moved to the SW corner and completed the base tie in around the satellite and patched plate holes in the area. Fire watch from 3:30pm to 5:30pm.
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Roof Report, February 19, 2013: Once we got to the site we continued with the base tie in around the large curb and the parapet on the SW corner of the upper roof.
Roof Report, March 7, 2015: Today we completed the field cap and most of the DE granulating around the details. Roof Report, March 9, 2015:
Bill and me completed the cap stripping on the upper roof today and need to touch up the gum boxes and granules to finish the SBS on the upper roof. We then completed the curbs on the main roof and started to install the plumbing vents when it started to rain at 3 pm. I am not happy with the large ponding area on the east side of the main roof and would like permission to extend the sump on the east side with a trough through the high spot so that more water drains.  I would have to cut out the FR board from the sump about 1 ft. wide west about 10 ft. to where the water ponds 3 inches at the deepest point. Then tie in the old roof to new torch on roof through the trough. This would require 10 man hours and another roll of cap which would add another 2 years to the life of the cap in that area. Roof Report, March 10, 2015:
Today we installed 8 plumbing vents and touched up the existing plumbing vents with smag and granules. We completed the west drop drain install and reset the air units on the SW corner of the main roof. We then cleaned the entire main roof and downloaded all the garbage. Roof Report, March 11, 2015:
This morning we completed the touch ups on the gum boxes of the upper roof and then started installing the metal around the perimeter of the upper roof and found that we were short one length. On the far east side of the roof there looks to be another piece missing that would cover the electrical lines and 2-18 inch storm collars are gone as well. We installed all the metal that was there and added extra screws and smack pins to make them very solid.
Roof Report, March 12, 2015: After the weekly meeting in the morning we met up at Home Depot for caulking and then went to the site. We spent extra time on resetting all the wire tracks on the upper roof and finished off the storm collars with caulking as well. 2 of the 18 inch stacks still have no storm collars but we filled them with caulking anyway. With no metal flashing on the wall detail on the upper roof, we made sure that water would not pond there by completely filling the riglet with caulking. We downloaded the rest of the tools, rolls of base, and propane into the small trailer and parked it in the very NE corner of the parking lot.  The bin is still on site and will need to be removed.
Follow-up Inspection, August 19, 2015: Upon visual inspection of the roof. I noticed 6 different blisters had developed. Attached is a copy of a roof map that shows the approximate locations of the blisters. Continuing on we walked the entire roof, testing the membrane to make sure the insulation was properly adhered to the roof underneath. I would say that there is no issues with the adhesion. The following is a list of the repairs that should be made to said deficiencies:
  • A lack of chipping away at the existing roof that was re-roofed led to a ridge. We can either build it up around it, leveling it off, or cut it and patch it.
  • Run a patch to meet lapping requirements.
  • Pipes need to be patched.
  • Anchor fasten the flashing correctly to the wall. Ms detail to seal the flashing.
  • Replace with concrete paving stones and roof mate underneath, and have a drainage mat under the roof mate.
  • Run a drainage mat or roof mate.
  • Install storm collars and caulk them.
  • Have a flashing made up and installed.
  • Have a sheet metal cap fabricated and installed.
  • Install cap sheet, roof mate, drainage mat and paving stones.
  • Box it in with cap and quick prime.
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< End Report > CODE: 11834 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.

Edmonton Commercial Flat Roof Inspection, July 2014

This commercial client requested an inspection and subsequent quotation for their flat rooftop. A crew member was dispatched for the inspection and immediately noticed several water leak issues. Inspection, July 29, 2014: They are getting leaks around three units and one corner detail, an additional leak is coming from an eliminated penetration. All of the lap seal is cracked around the three units and the corner detail. There has been an attempt to patch the leaks with sopra mastic gum in the past, but this would have to be removed for a proper repair to occur. I would need to remove the old lap seal, add flash dorm to the spots that are lifting, and apply new laptop seal to all seams around the leaking areas. This job would take approximately 40 to 50 man hours. 20140729_111236_resized 20140729_111241_resized 20140729_111300_resized 20140729_111310_resized 20140729_111622_resized 20140729_111625_resized 20140729_111631_resized 20140729_111638_resized 20140729_111711_resized < End Report > CODE: 9688 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.

Edmonton Commercial Flat Roof Repairs, August 2011

This commercial client required several issues looked at by the GRS crew. The source of a water leak was identified, and our crew also performed repairs to the gum cups and electrical boxes. Roof Report, August 9, 2011: Today I caulked all electrical boxes, topped up three gum cups, and replaced 1 vent cap. I also replaced the wood under the exhaust fan with pressure treated wood. In the report it was suggested we clean tar off of the metal and reseal the penetrations. The only problem with that is I would have had to replace the cap metal all together, and there was nothing wrong with the metal or the seal. I decided to trowel in mastic gum around the ducting instead. I also caulked the window and attempted to clean tar stains off of the stucco wall.
I couldn't fix the electrical conduit or rehang the power box and conduit because it is bent beyond fixing. It has exposed wiring and the compression fittings are seized, we will need an electrician to fix that.
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Roof Report, August 16, 2011:
We put proper insulation under the pressure treated wood along the five units on building 2. I also found a possible leak location on building 3, it was coming into the men's bathroom from ducting under the a/c unit. I found 2 spots in the ducting that were bent open so I pushed them down and caulked them. Also found a vent that wasn't roofed in properly and I fixed that as well by wrapping it in membrane and form flash. Lastly we  put new pressure treated wood and insulation under the unit on building 3.
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< End Report > CODE: 11227
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.