Encore Custom Preforms produces more than 84 different types of plastic bottles at its Mississauga, Ontario facility for companies across North America. When the 20,000 sq.ft. built-up roof (BUR) on the facility needed to be replaced in 2016, the company hired Cherry Roofing to inspect and recommend a new roof system. A seasoned roofing contractor serving the Greater Toronto Area since 1979, Cherry Roofing selected a hybrid BUR. Cherry Roofing used Polyglass’ multi-ply SBS (Styrene-Butadiene-Styrene) membranes to provide long-term waterproofing protection. With a 20-year warranty, the new roof system will protect the building and assets for years to come.
The Roof System:
After removing the existing BUR and cleaning the steel deck, Cherry Roofing adhered a Kraft vapor barrier to the deck. The 1.5” polyisocyanurate insulation was hot-mopped over the vapor barrier followed by the installation of 1/2” fiberboard. The crew hot-mopped two plies of Elastoflex S6, a SBS base sheet reinforced with a polyester mat and saturated with a rubberized asphaltic compound to increase durability. The roof system was finished with a top flood coat of asphalt followed by a pea gravel pour. Elastoflex S6 G Oak, a premium SBS cap sheet reinforced with a non-woven 250 grams polyester map, was torch-applied to the perimeter flashing.