Commercial Flat Roofing in Barrie & Orillia

Flat roofing systems we install

We work with every major commercial low-slope system so we can match the roof to the building:

• TPOThe most widely used single-ply commercial membrane. Reinforced with a fabric scrim, mechanically fastened or ballasted, and a strong choice for cutting energy costs.
• PVCA cost-effective single-ply system that is remarkably durable and highly resistant to fire, chemicals and strong winds, with a reflective acrylic finish.
• EPDMA lightweight rubber membrane made primarily of ethylene and propylene — easy to install, adhered or seam-sealed, and low on repairs.
• 2-ply modified bitumenAn asphalt-based system built to withstand harsh weather. Viscoelastic, moisture-resistant and durable — ideal for heavy foot traffic and tight re-roofs.
• 4-ply built-up asphalt & gravelFour layers of felt with a flood coat of bitumen and embedded gravel form a strong, waterproof, puncture-resistant membrane that can last 20+ years.
• Below- & above-ground waterproofingProven waterproofing for foundation walls, tunnels and parkade slabs — protecting your structure from moisture, its biggest enemy.

Our flat roofing services

• New flat roof installationLow-slope membrane systems for new developments — modified bitumen, EPDM, TPO and built-up roofing.
• Flat roof replacementSafe removal of existing roofing and installation of new membranes with proper slope and drainage design.
• Flat roof repairsLocalized patching, seam resealing and flashing replacement to restore water-tightness and stop further damage.
• Insulation & vapour barriersRigid insulation and vapour control layers to improve thermal efficiency and manage interior moisture.
• Preventive maintenanceScheduled inspection and service programs that extend roof life and reduce unexpected repair costs.

Why choose a flat roof system

• Lower material and labour costs than pitched roofs
• Clean, uniform look that suits modern architecture
• Easy, safe access for inspection and maintenance
• Supports insulation and reflective membranes for energy efficiency
• Free rooftop space for HVAC, solar and other equipment

Understanding flat roofs on commercial buildings

A "flat" commercial roof is never entirely level — it's built with a subtle incline of up to about 12 degrees toward drains or edges to move water off the surface. Commercial buildings favour them because they're simpler and safer to install on large footprints, they free up interior space by hosting HVAC units on the roof, and reflective membranes reduce UV damage and heat absorption for cooler interiors.

Flat roofs also skip gutters in favour of efficient rainwater roll-off, stay accessible for inspection and upkeep, and — in materials like EPDM, PVC and TPO — deliver long-lasting, budget-friendly protection.

Common flat roof issues we resolve

• Ponding water that doesn't drain and breaks down the membrane
• Cracked membranes from UV exposure and temperature swings
• Blocked drains that raise the risk of leaks and pooling
• Flashing separation letting water in around edges, vents and equipment