Flat roofing is its own discipline — different membranes, different tools, different crew skillset, different warranty structure. Budget Roofers installs three flat-roof systems in the Lower Mainland: 2-ply SBS modified bitumen torch-on (the workhorse for residential flat sections and additions), TPO single-ply (energy-efficient white membrane for larger commercial and modern residential), and PVC single-ply (premium chemical and fire resistance for specialized applications). 2026 pricing runs $9-$13 per square foot for SBS torch-on, $10-$14 for TPO, and $13-$18 for PVC — all turnkey including tear-off, insulation, membrane, all flashings, and warranty.
SBS torch-on is the most common residential flat-roof system in BC. We install a base sheet (mechanically fastened or torch-applied), then a granulated cap sheet torched to the base — creating a fully bonded 2-ply membrane that handles foot traffic, ponding water, and BC's freeze-thaw cycles. Installed correctly with proper drainage, lifespan is 25-30 years. Per square foot pricing: $9-$13 turnkey including tear-off, 1.5" polyiso insulation (where applicable), tapered insulation for drainage, base sheet, cap sheet, all flashings (curbs, drains, scuppers), parapet wraps, and warranty.
TPO Single-Ply
TPO (thermoplastic polyolefin) is the dominant commercial flat-roof system globally and increasingly common on modern residential and laneway homes in Vancouver. White reflective surface delivers measurable cooling-load reduction. Heat-welded seams create a monolithic membrane that handles ponding without issue. We install 60-mil and 80-mil TPO from Carlisle, GAF, and Firestone. Per square foot pricing: $10-$14 turnkey including tear-off, polyiso insulation, mechanically fastened TPO field, hot-air welded seams, all flashings, and 20-25 year manufacturer warranty.
PVC Single-Ply
PVC is the premium single-ply system — superior chemical resistance, fire performance, and longevity over TPO at a 20-30% price premium. We use it for restaurant kitchens, laboratories, and high-end residential rooftop decks. Per square foot pricing: $13-$18 turnkey.
Real Flat Roof Job Examples
Vancouver laneway home flat roof, 600 sq ft SBS torch-on — $7,200. East Van addition flat section, 350 sq ft SBS — $4,100. Burnaby strata townhouse complex, 12,000 sq ft TPO re-roof — $138,000. Richmond commercial single-storey, 8,500 sq ft TPO — $98,500. White Rock rooftop deck, 450 sq ft SBS with pedestal-set pavers — $11,800. Pricing varies with insulation depth, drainage modifications, and parapet detailing.
Flat Roof Maintenance
Flat roofs need annual inspection — debris removal from drains and scuppers, seam check on TPO and PVC, granule check on SBS, and flashing review at every penetration. We offer annual maintenance contracts at $400-$1,200 depending on roof size; this typically extends warranty terms and catches small issues before they become leaks.
Frequently Asked Questions
How much does a flat roof cost per square foot?
$9-$13 for 2-ply SBS torch-on, $10-$14 for TPO, $13-$18 for PVC, all turnkey including tear-off, insulation, membrane, flashings, and warranty.
Which flat roof system is best?
For residential flat sections and additions, SBS torch-on. For larger commercial and energy-efficient modern residential, TPO. For specialty applications, PVC.
How long does a flat roof last?
25-30 years for SBS, 20-25 for TPO, 25-30 for PVC, all assuming proper drainage and annual maintenance.
Can you do rooftop decks?
Yes — SBS torch-on with walking-pad finish or pedestal-set paver systems for usable rooftop deck space.
Are you licensed and insured?
Yes — licensed and bonded in BC, $5 million liability insurance, and full WorkSafeBC coverage on every crew member. Documentation provided on request before any contract is signed.
Do you subcontract?
No. Every Budget Roofers crew member is a full-time employee. We do not subcontract install work.
What's your warranty?
25-year manufacturer material warranty plus 10-year Budget Roofers workmanship warranty. Premium and designer profiles carry 30-50 year manufacturer terms.
How long does install take?
2-4 days for a typical single-family home; 5-7 for complex layouts; 3-5 working days for cedar conversions.
Do you offer financing?
Yes — 0% for 12-24 months, longer terms up to 120 months through Financeit and SNAP. Soft-pull pre-qualification, decision in minutes.
What if it rains during install?
We monitor Environment Canada hourly and pause for heavy rain. We can tarp and dry-in safely in light rain. Warranty depends on dry installation conditions.
Do you handle permits?
Yes — included in the fixed price. We pull permits in your name and schedule inspections.
What if the decking is rotten?
Standard quote includes 4 sheets of replacement decking. Additional sheets billed at $85-$120 installed; we always show you damaged sheets before replacement.