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:
Quotation, August 2 2012:
- 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
On this tar and gravel roof, piles are exposed and deteriorating; there are soft spots throughout the roof. There are multiple buckles and blisters. Previous contractors have attempted to stop the leak by caulking and using tar, but this is not working. The roof also has several areas where there is no gravel and has severe damage. The vents and flashing need to be resealed. The exposed bitumen in one area has severe lap splitting.
I recommend that the roof be replaced or a recovery system be installed. In the event of a recovery, some areas may require replacement of insulation. The roof is approximately 35 years old and mostly like past the point of repairs.
-insert sat photos-
Work commenced at this site on August 23 2013 due to rainstorms.
Field Report, August 23 2012:
Gravel was shoveled away to clear a 40 ft. square, where one leak was found in the roof membrane. The origin was traced to another 10 ft. segment, which was torn up. After removing the old membrane, 2-ply flam flam and cap was torched down. The edges of this fixture were gummed to ensure water tightness.
All the metal was then removed from units which contained it and inspected for leaks. It was reinstalled after finding no leaks underneath. Afterwards, six gum boxes were filled and the gravel which had been swept away from the problem area was replaced.
Flat Roof Scope, September 12 2013:
The client has approved a 2-ply torch-on roof recovery. We will cut out wet spots. Metal capping has to be saved, as the client does not want to pay for brand new capping. We will not be providing cranes for this site, use jack units if you have to.
The metal roof will also need a liquid rubber application.
September 19 2013:
- 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
After making a supply run, we arrived to the site at 2:00 pm. The existing gutter system was measured and called in to get a price quotation for new gutters.
September 23 2013:
We finished tearing off the existing system and kept torching cap sheet on. A propane refill will be required soon (2x 50 lb. tanks). A bin was also dropped off on-site for waste removal.
September 26 2013:
Cap metal was measured for the flat roof and we sent in an order for materials. Overhanging cap sheeting was also cut back to a proper size. Liquid rubber preparation work has also begun. Once metal fabrication is completed, we will begin gutter replacement.
October 9 2013:
New hires were tasked with adding polyurethane to the window sidings and complete roof sheeting. A large part of the morning was spent troubleshooting the liquid rubber machine, but we managed to finish application before the day was finished.
We scheduled gutter installation with the client in December.
December 10 2013:
Assessment before gutter installation -
December 11 2013:
- 4x rolls of SBS cap
- 4x tubes of SOPRAMASTIC, caulking-style
- 2x caulking guns
We set a new hire on building gutter end caps. It was a bit slow going since this was his first time doing so with gutters. Two other crew members installed gutter hangers.
In the afternoon, the newly built gutter caps and one downpipe were installed.
December 13 2013:
A large section was ice was removed to install a piece of industrial guttering with attached end caps. We then added hangers and fixed some deficiencies that arose with previously installed gutters and hangars.
Two more crew members arrived a couple of hours later and installed gutter downspouts. While they were at it, problematic gutter attachments were dealt with.
By the end of the day, all hangars and end caps were completed. Four downspouts remain as well as a small gutter section at the entrance which requires an assessment.
December 18 2013:
December 19 2013:
January 2 2014:
We were called back for another gutter inspection. Most of the seams are leaking in from the west side of the building and east of the client's main office.
The gutter installation job was done in very cold weather, which could be the reason for the leaks. The caulking was probably not well applied. We should review all of the seams for further leaks.
January 21 2014:
Firstly, all ice was removed around the affected unit. Detail patches were torched onto the unit corner, and we re-gummed a gum box. There was a piece of cap that was torched a quarter of the way; the rest had peeled off the affected unit.
We dried the peeling and torched it back into place. This was probably the main cause of the office leak. Afterwards, five more soft gum boxes were touched up.
A skeleton crew was left behind for firewatch at the end of the day.
< End Report >
Call our 24 hour emergency roof repair at 1.780.424.7663. Mail to: 3428 99 Street NW Edmonton, Alberta T6E-5X5.
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