Nisku Liquid Rubber Roof Recovery, August 2011

The report below follows services carried out on a metal roof for one of our industrial clients. They sought GRS' assistance in recovering their roof with engineered liquid rubber, with some other spot repairs to complete as needed. Inspection: June 2, 2011 The GRS crew went on location to inspect the existing roof system and take photos that will help the project management group form a better idea of what service will be needed at this location. The photos appear below.
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Our client had an industrial-grade metal roof. A crew was dispatched to perform an initial inspection with regard to the scope and requirements of performing a roof recovery using engineered liquid rubber.
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Many of the screws were exposed or missing, with parts of the metal beginning to rust.
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Rusting at the seams, with exposed screws running the length of this section of the roof.
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There were signs of previous spot repairs. In this case, caulking had been applied to the screws.
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More spot repairs, with caulking applied at the seams and over the edges. This solution had expired, with cracks forming along the length of the roof where the caulking had been applied over the seams.
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Closeup of some old sealant applied over seams and around raised screws. Note the hole in the fastener that had previously been closed off. As well, there are slight buckles in the metal. Each of these deficiencies contribute to common leak entry points and a loss of a metal roof's water shedding properties.
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We inspected the wall connection, noting whether any components on the wall itself needed to be replaced, and whether we had to order any new flashing as part of the recovery.
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Sealant had previously been applied to the window sills, flashing, along the wall seams, as well as on the intersection between the flashing and the standing seams on the roof. Besides showing signs of cracking, there was also more rusting along the walls.
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Significant rusting on the flashing, with an unsealed base for the rooftop appliance. As well, the edging over the window sills is not flush with each segment. Further down, it can be seen to be curling up from the window.
  Quotation Delivered: June 6, 2011 After seeing the roofers' investigation photos and measurements, GRS' project management could deliver an accurate quotation for services to be carried out of the roof. Included in the quotation were two separate services; the engineered liquid rubber application and an EPDM installation for the area around two eaves. Also attached to the quotation were the documents and web links surrounding GRS' workmanship guarantee, system methods, schedule availability for the season, and more. There was another note mentioned that regarding schedule availability, it's best to book liquid rubber jobs earlier in the season for when it's warmer. Even though the solution will bond, it performs best when applied in warmer weather.   Roof Report: July 20, 2011 The crew went out to the client's building and got to administering trowel-grade liquid rubber to all penetrations, joints, and problematic areas that has been previously discovered. They also did a lap around the perimeter, ensuring watertightness on the high-risk parts of the roof. They then set up the pump to apply the spray-on liquid rubber and managed to cover roughly one-quarter of the roof itself. Their plan was to finish the entirety of the roof the following day, so they packed up the equipment, cleaned the site, and closed the site for the evening.  
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Trowel-grade liquid rubber curing at the base of two plumbing appliances.
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Liquid rubber coatings applied and curing at the base of a chimney stack.
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We began the roof recovery by applying coatings at the wall connections, paying attention to the penetrations.
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A lap around the perimeter was completed to ensure that high risk parts of the roof were protected.
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Mid-application over a significantly rusted section of the roof.
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By the end of the day, our technicians managed to coat one-quarter of the entire roof.
    Site Inspection: August 1, 2011   One of the senior members of GRS' crew went on-site to inspect the liquid rubber application and found it to be forming a good seal. There was some water that had formed a small bubble in the rubber, but once popped it was deemed fit for continued use as the rubber still formed a solid barrier to the metal.   Roof Report: November 25, 2011 Several months after the initial liquid rubber coating, the client call in to report some other leaks in separate areas of the roof. GRS sent a team out to the site to investigate and carry out the necessary repairs. They administered sealant to the flashing where the wall meets the north-facing roof edge, and again on the south-west corner of the building. They also sealed in the wall-to-roof spots on the west-facing wall and inspected the existing wall spray. After carrying out the spot repairs, they had a better idea of what else needed to be done to the roofing system, and returned the following report:
  • The west-facing wall where the windows are is 3' x 78'. Will need 100' x 6" skrim sheet, and roughly 16 man-hours to install it.
  • The north-facing wall is 3' x 40'. Need 50' x 6" skrim sheet for another 12 man-hours to install.
  • The west-facing wall's upper roof is 3' x 24'. Need 25'x6" skrim sheet and 10 man-hours to finish.
The site was cleaned up, and the crew departed, leaving the repair options in the hands of the client.   This report will be updated as more reports come in, should the client elect to move forward with repairs. CODE: 1409 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, Millet, Calmar, Evansburg, Redwater, Onaway, Viking, Athabasca, High Prairie, Valleyview, Fairview, Peace River, Whitecourt, Mayerthorpe and many more rural areas and towns.  

Metal Roof Coating Nisku, June 18, 2015.

Article: Metal Roof Coating Nisku Alberta - Liquid Rubber Coating To Industrial Roof.

Liquid rubber expands and contracts very well in Canada's climate. Metal Roofing is the roof that expands and contracts the most out of all roofing material.  June 10, 2014: Crew Arrives on Site for Inspection.  Materials needed. 6 pails of Liquid Rubber. 1 trowel grade. 3 tubed chalking. 1 roll of reinforcement mesh. Man hours 16 to 20 not including drive time. June 14, 2014: Metal Roof Coating Crew Arrives on Site.  Arrived at 511 12 Ave Nisku Alberta. Today we did all our trowel grade and our prep work. Prep work included, patching holes and the center seam all the way down, also our corners. After that we started brushing in where the standing seams are. By the end of the day we had the roof 50% complete.
Prep Work
Prep Work
Prep Work Around Vent
Prep Work Around Vent
Prep Work on Metal Roof
Prep Work on Metal Roof
Liquid Rubber Metal Roof Coating
Liquid Rubber Metal Roof Coating
Liquid Rubber
Liquid Rubber
Metal Roof Coating
Metal Roof Coating
  June 15, 2014: Crew Arrives Back on Site.  Today we finished of the rest of the panels. The roof is 100% complete. I did my walk around with the client and he was extremely happy.   < End Report > CONTACT US Call our 24 hour emergency roof repair at 1.780.424.7663. Mail to: 3428 99 Street NW Edmonton, Alberta T6E-5X5. For all other areas of Canada call us at 1.877.497.3528 toll-free. 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.

Nisku Metal Roof Liquid Rubber Coating, June 5 2015

Article: Metal Roof Coating. Teal Colored Liquid Rubber to Metal Roof in Nisku Alberta. Industrial Ribbed Panel.

Metal Roof Coatings. Considerations When Choosing Metal Roof Repair, Refurbishment and Maintenance. Metal roof systems don't last forever and will eventually require repair, maintenance, replacement or refurbishment of some kind. In central and northern Alberta metal roof systems experience significant expansion and contraction of panels. This expansion causes the fastener holes to become larger, causes fasteners to loosen, panels will come apart and the rooftop vents and other penetration areas are prone to leakage. Also, snow and ice can build-up at the eaves-trough and back up under the panels causing leaks. One method to repair or refurbish a metal roof is a metal roof coating. In this example our customer was experiencing various intermittent leaks. The leaks were primarily in the winter and spring - ice damming and snow melt were causing leaks. The challenges and considerations when coming to the right solution for our client were:
  1. The allowable budget did not allow for a complete metal roof replacement.
  2. Recovery systems such as putting another metal roof over-top or a membrane such as EPDM, TPO or PVC. All scenarios has disadvantages due to weight, cost, and street view.
  3. Spray foam (spf) was considered but the main motivating factor was waterproofing the roof and not R value. Spray foam shouldn't be considered unless R value is a significant reason to consider it.
  4. The client did not want to risk spot repairs and the aggravation with possibly having to do spot repairs year after year.
  5. Standard metal roof coatings in the market were considered, but conventional roof coatings do not last very long in extreme climates like central and northern Alberta.
  6. Liquid rubber was highly considered because of its success in cold climates, but the challenge was that that it comes in black and this particular roof wasn't a low slope industrial roof that you do not see from the street. It is a sloped industrial roof that is part of the street view facade.
  7. The customer chose liquid rubber with an acrylic color coating over the black liquid rubber knowing that at some point the acrylic coating would need to be re-painted on as acrylic will eventually start to peel and crack. This option solved the problem of street view appearance and also waterproofing the metal roof.
August 22, 2014: Journeyman Arrives On-Site for Metal Roof Leak Inspection and Assessment. 
We arrived on site and spoke with the maintenance manager. He showed us two leaks on west side of the building. When I attended to the roof and inspected the panels, fasteners and flashing I did not observe any obvious sign of the leaks. It was determined that due to when the leaks occur (winter and spring with ice damming and snow melt) that a roof coating would be best. Our customer does not want spot repairs and wants the problem solved for some time.
Metal Roof With Leaks
Metal Roof With Leaks. Ribbed panels. Exposed fasteners.
Metal Roof
Metal Roof canopy or skirt area.
Leak From Inside
Leaks inside building showing up as brown spots on ceiling tiles.
Building With Leak
Building in Nisku with metal roof leaks.
  October 15, 2014: Roofing Crew Arrives to Coat Metal Roof.
We arrived on site and conducted the morning safety meeting. The scope of work today was an acrylic roof coating color match and liquid rubber coating to base to complete lower roof. We couldn't roll the acrylic product on for some reason (it would change color in spots - we think due to specific blend), so we had to brush the whole roof. Brushing was the only way to get the acrylic to look good and consistent with the color that was already on there. Completed the whole roof and had it coated by the end of the day. The discoloring you see in the photos below are due to drying (curing) of acrylic coating. After about 30 mins the darker areas blended with the lighter areas.
Liquid Rubber Coating With Aycrilic
Liquid Rubber Coating With Acrylic Teal Color in Nisku, Alberta.
Liquid Rubber With Aycrilic
Liquid Rubber With Acrylic Top Coating. Discoloring corrected itself when complete roof dried and cured and coloring became consistent.
Liquid Rubber Coating
Liquid Rubber Acrylic Colored Coating.
Liquid Rubber
Liquid Rubber coating to metal panel roof with exposed fasteners.
  View this video to review the scope of work for application of a metal roofing coating.   < End of report >   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.