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Repairs & Waterproofing
A seamless fast-curing waterproofing membrane ensures complete
durable flat roof repair.
Spray-on applications are much faster than roll-on methods.
Our material can be applied at temperatures as low as -5°C –
an advantage in commercial roofing industry.
Shorter application time and material durability ensure savings.
Application thickness can be easily adjusted, as required.
Light-colour surface helps reduce heat absorption. A UV-protective layer is applied for more durability.
Joint Seal Waterproofing is a Toronto-based company, specializing in commercial roof repair and waterproofing. We provide flat roof repairs in a vast geographical area, from Hamilton to the City of Toronto, including Mississauga and all of GTA.
Fixing a flat roof may require crack repair and patching ahead of roof membrane application. Each flat roof membrane installation and design is specified by an engineering consultant.
Throughout our portfolio of flat roof membrane installations and waterproofing, we have had experience with most of the typical membrane types.
Thanks to monolithic adhesion provided by our products, flat roof repairs are done quickly and efficiently.
To repair a crack on any concrete surface, a clearly defined procedure is followed. Cracks are prepped and then treated with specialized, industrial-strength adhesive, after which they are filled with polymer cement and a waterproofing primer.
Under traditional repair methods, patching concrete requires a minimum of two-inch demolition in the affected area.
The use of specialized, industrial-strength materials permits patches as thin as 5 mm on any surface, making flat roof repairs much more cost-effective and faster.
Fixing Debonded EPDM Membrane
A five-layer coating is applied after the roof surface is flattened, to provide an optimal commercial roof repair.
To fix a debonded EPDM membrane, the following procedure is applied:
- The surface is power washed, and valleys are fixed with a self-leveling material.
- A fire-rated protector board is installed.
- Heavy sheets are then placed to flatten the roof, and the joints between them are detailed.
- Finally, a five-layer coating is applied: specialized PU-100 primer, PU-500 liquid waterproof membrane, fleece material, another layer of PU-500, followed by UV-resistant coating.
Repairing Delaminated Corners and Edges
Leaking around the delaminated edges is prevented.
Flat roof leaking around the delaminated edges is corrected by using Butyl tape and detailing them with PU-500 liquid waterproof membrane.