Owner-operated by union-trained flat roofer Stephen Johnston out of Markham, Ontario. Whether you need a residential flat roof replacement, garage or addition roof, chimney & parapet leak repair, or multi-unit townhouse subcontracting—work directly with the installer on the roof.
Direct response from owner-operator Stephen Johnston · Serving Markham & the GTA
We focus 100% on low-slope and flat roofing systems. Every roof is primed with ASTM D41 penetrative asphalt primer and heat-welded with 2-ply SBS modified bitumen membrane.
$300 / 100 Sq. Ft. Baseline
Long-lasting 2-ply torch-on flat roofs for detached homes, backsplits, rear family-room additions, garages, and modern custom homes across Markham and Toronto.
Leak-Proof Transitions
Most flat roof leaks occur where a flat deck meets a brick wall, chimney chase, or sloped shingle roof. We encapsulate every vertical upstand with heat-welded membrane.
Union-Trained Subcontractor
Reliable, self-equipped flat roofing subcontractor for GTA residential builders, multi-unit townhouse blocks, and development sales offices in Pickering, Richmond Hill, and Markham.
Inspect our actual rooftop installations, asphalt priming, brick chimney flashings, and new-construction townhouse blocks across York and Durham Region. Click any project to view full-screen details.
Single-ply glued rubber roofs peel in Ontario freeze-thaw cycles. See how our 2-ply heat-welded SBS modified bitumen assembly transforms raw roof framing into a monolithic weather shield.
We inspect and fasten all plywood/OSB decking, install 45° cant strips at wall junctions, and coat the entire roof and masonry walls with penetrative asphalt primer.
Closed-cell thermal insulation boards and tapered saddles eliminate standing water and direct snowmelt cleanly toward drains and scuppers.
Thermofused at 400°C with propane roofing torches to create a seamless, puncture-resistant waterproof base layer across the deck and up all parapet walls.
Finished with a heavy granulated cap sheet, continuous 75mm heat-welded seams, and pre-painted metal drip-edge flashing built for 25+ years of GTA weather.
Left shows a new-construction townhouse block deck in Pickering, ON prior to membrane application; right shows our completed 2-ply torch-welded modified bitumen parapet and valley system in Markham, ON.
Use our interactive estimator below to calculate your baseline torch-on roofing cost based on square footage, roof complexity, and deck preparation.
Dispatched directly from 35 Sir Brandiles Place, Markham, ON L3P 2Z4 (Markham Village). We provide fast site visits, emergency leak repairs, and full installations across the GTA.
Immediate local response across Markham Village (L3P 2Z4), Unionville, Cornell, Berczy Village, Box Grove, Milliken, Thornhill, and Whitchurch-Stouffville.
Active residential subdivision and homeowner coverage across Pickering (including Seaton & Duffins Heights townhouse blocks), Ajax, and Whitby via Hwy 7 & Hwy 407.
Serving commercial builder sales offices and residential flat roofs across Richmond Hill, Vaughan, Scarborough, North York, and East York.