Thermal Insulation Audit — Toronto GTA Heat-Loss Survey

Insulation Audit (Thermal) in Toronto GTA

RenoHouse provides FLIR thermal insulation audit services for Toronto and GTA homeowners worried about high heating bills, cold rooms, condensation, or poor comfort. A thermal insulation audit is a non-destructive scan of your home's envelope — exterior walls, attic, basement rim joist, top-floor ceiling, exterior corners — to identify insulation gaps, compressed insulation, thermal bridges, and air leaks during cold-weather conditions. <strong>What we find.</strong> Missing insulation behind specific wall sections (often where tradespeople worked and didn't replace it), compressed attic insulation under storage or after wildlife activity, thermal bridges at exterior wall corners and roof-wall transitions, air leaks at electrical boxes / recessed lights / attic hatches / rim joists / window frames / door perimeters, missing rim-joist insulation in basements (the single biggest air-leak in most Toronto homes), and HVAC duct losses in unconditioned spaces. The MSX visible-light overlay shows you exactly where each issue is — "the cold zone is right above the kitchen window" instead of an abstract thermal blob. <strong>Toronto context.</strong> Toronto's Heating Degree Days (~3,500/year) make insulation efficiency a real-money issue — the average GTA home spends $2,500–$5,000/year on heating, and a 15% efficiency improvement returns $375–$750/year. Toronto building stock varies dramatically: 1900s–1950s brick homes often have minimal wall insulation; 1960s–1980s homes have R-12 to R-20 walls and R-20 to R-30 attics (under modern code); post-2010 builds typically R-22 walls and R-50+ attics. Identifying where YOUR home falls drives prioritization — older homes benefit most from rim-joist sealing and attic top-up before window or wall work. <strong>Pricing.</strong> Standalone insulation thermal audit: $250–$450. Pre/post insulation work scan (verifies coverage of work we just completed): $150–$250 (often free with our insulation install contracts as a QA verification scan). Full thermal envelope survey + recommendations memo + scope-of-work for retrofit work: $395–$595. <strong>Honest scope and EnerGuide distinction.</strong> Our thermal insulation audit is a thermal performance report, NOT an EnerGuide rating. EnerGuide ratings require an NRCan-Registered Energy Advisor at a licensed Service Organization, are required for Ontario Home Renovation Savings (HRS) rebate eligibility on insulation/air-sealing work, and use blower-door pressure-differential testing to quantify air leakage. We use thermal-imaging-only diagnostics with optional kitchen-exhaust pressure differential — useful for prioritization, NOT for rebate paperwork. For HRS rebate-eligible work we refer to NRCan partners (Windfall, Green Venture, Reep Green Solutions, EnerSolution, All Season Inspection) for the EnerGuide rating; we do the renovation work ourselves. <strong>Conversion to retrofit work.</strong> 40–60% of thermal insulation audits convert to retrofit work — attic insulation top-up ($1,200–$3,500), rim-joist spray foam ($800–$2,200), wall cavity insulation ($3,000–$15,000), recessed-light air-sealing ($300–$800), attic-hatch insulation/weatherstripping ($150–$400), or window/door perimeter caulking and weatherstripping ($300–$1,500). The audit fee is credited toward any retrofit contract over $2,500. <strong>Best season.</strong> Cold-weather months (October–March) are dramatically more effective than summer. The temperature differential between inside (~21°C) and outside (~-5°C) is what makes thermal anomalies visible. Summer audits work for AC duct leaks but are less effective for envelope insulation diagnostics. Book your audit in winter for best results. Serving Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Etobicoke, Scarborough, North York, and all GTA communities. Call 289-212-2345 to schedule a winter thermal insulation audit.