Sherwood Park Commercial Roof Liquid Rubber Installation, September 2012

This commercial client required a liquid rubber installation to prevent further moisture from entering the building. An acrylic top coat was also to be applied over the liquid rubber installation. Inspection: Very difficult to pinpoint where the moisture is entering, however it appears to coming in at a number of areas. The metal roofing has a number of maintenance and sheet metal issues but the inherent expansion and contraction also likely causes issue. This roof leaks after the snow melts and heavy rainfalls. Roof is approximately 25 years old, could use a metal roof replacement but the Engineered Liquid Rubber coating will stop the roof from leaking for many years. Project Manager Notes:
This roof structure is a candidate for either a repair-maintenance program or an engineered coating and does not have to be replaced. I would not recommend an elastomeric coating or the SPF Spray Foam as the acrylic and EPDM covering options do not last well in Calgary climate, but liquid rubber performs well in our climate. Generally speaking, metal roof systems are constant aggravating roof structures. Industrial metal roof systems have a deficient design - they are water-shedding and not water-proofing coverings. Metal expands and contracts more than any other roofing material. Metal roofs tend to leak from expansion and contraction and ice / snow loads. Leaks are intermittent at seams, penetrations (stacks, etc.), fasteners (fastener holes get larger with expansion and contraction), around the perimeter as ice back-ups at gutters and then under eave, and at joints between roof and wall connections. Metal rust / corrosion may start at places, the seams and fasteners are vulnerable from expansion / contraction and snow loads, and any traditional caulking or coating won’t last more than a few seasons at best. Remedies are either spot repairs-maintenance with caulking or more extensive maintenance which involves engineered coatings. Our recommendation is a high end engineered liquid rubber polymer coating that carries a 10 Year Manufacturer Warranty and has option for maintenance contracts for extended warranty. General Roofing is considered a pioneer and leader in engineered roof coatings; (,, We have significant liquid rubber operations specifically serving industrial facilities with low slope metal roofs. Our clients include companies such as Imperial Oil, Shell Oil, Telus, Fortis, Toran Power, National Oil Well Varco (NOV), Teck Resources, and many more. ( In this instance, we recommend a 2 Ply System engineered liquid rubber coat to complete metal roofing, fastener replacement as required, sheet metal repair as required to-achieve a water-tight state. Typically this is even more successful than a full metal roof replacement. A recent project with photos can be found at;
1 2 Tomorrow we are ready to spray acrylic and will complete the scope (weather pending). The trailer is being left on site as it is a secure lot, temperature will be going down to zero tonight so all combustibles have been removed from trailer and a heater placed inside to maintain temperature of LR.
  • Pressure washed roof.
  • Poly'd enter building and tarped the trailer.
  • Applied 2 coats of Metal Safe LR to roof.
Strathcona County-20120915-00154 Strathcona County-20120915-00155 Strathcona County-20120915-00157Strathcona County-20120915-00159 Strathcona County-20120915-00161 Strathcona County-20120915-00162 We struggled to get a constant spray going but the gun would only spray for a maximum of one minute at a time. We did all the troubleshooting in the book to no avail. I am thinking the acrylic is to thick for a standard paint sprayer. In short we are going to have to find another solution to apply this acrylic. I will have to call him (another crew member) tomorrow and ask him specifically which type of gun and nozzle he uses.
Approximately 6 hrs for two guys work remains if we can get a sprayer that actually works without getting clogged.
  • Re-applied poly that had partially come down.
  • Cleaned out trough of all mud from pressure washing.
  • Rinsed all salt off of the surface of the LR.
  • Began spraying acrylic.
  • Applied one coat of acrylic to 25% of roof.
Strathcona County-20120916-00168 Strathcona County-20120916-00169 Strathcona County-20120916-00170 Strathcona County-20120916-00171 Strathcona County-20120916-00172
< End Report > CODE: 2260 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.

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