Attic Insulation Top-Up
raising settled attic insulation to a roof-safe, energy-conscious depth. Best for cold rooms, high winter bills, shallow attic insulation, and older Canadian homes.
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Roof Insulation Services
Canada-wide roof insulation services covering attic top-ups, blown-in insulation, air sealing, ventilation balancing, ice dam prevention, removal, garages, and commercial reviews.
Blown-In Roof Insulation
dense, even attic coverage around trusses, baffles, and hard-to-reach roof areas. Best for large attics, irregular roof framing, and homes with inconsistent coverage.
Attic Air Sealing
closing warm-air leakage paths before insulation hides them. Best for frost in the attic, bath fan leakage, light fixture bypasses, attic odours, and ice dam patterns.
Roof Ventilation Balancing
balancing intake and exhaust so insulation can stay dry and effective. Best for condensation, hot upper floors, roof deck staining, and repeated shingle stress.
Ice Dam Prevention Insulation
reducing heat loss into the roof deck that melts snow unevenly. Best for eaves with icicles, stained ceilings, repeated gutter ice, and complex Canadian rooflines.
Attic Insulation Removal
removing compromised insulation before rebuilding a roof-safe attic assembly. Best for rodent contamination, smoke odour, moisture-damaged insulation, renovations, and failed DIY work.
Garage Roof Insulation
improving comfort above or beside garages without trapping roof moisture. Best for bonus rooms, attached garages, cold floors, and garage attic heat loss.
Commercial Roof Insulation Review
identifying roof-level heat loss and moisture risk in light commercial buildings. Best for offices, retail bays, shops, condo buildings, and property managers planning roof work.
Calgary headquarters service
Build the roof insulation scope around the roof, not a generic square-foot price.
Good attic insulation planning starts with roof shape, ventilation paths, ceiling penetrations, access, material condition, and the actual comfort complaint. The right scope may be a top-up, air sealing, baffles, removal, or a staged plan with roofing work.
Assessment priorities
- Confirm insulation depth and coverage by roof zone.
- Find air leakage before adding loose-fill insulation.
- Protect soffit intake with baffles and clear ventilation paths.
- Document moisture, frost, staining, odour, and access constraints.
Service · Reviewed 15 July 2026
Expert review: Roof Insulation Services
What our crews see in the field
- Scope for Roof Insulation Services is built from the roof-in, not the material out — attic geometry, ventilation net-free area, and existing depth all constrain what a crew can actually install in one visit.
- In Canadian climate zones 6–7A (most of the country) we target an effective RSI 8.67 (R-49) at the ceiling plane after air sealing, per NBC 9.36.2.6, not a nominal bag-count.
- Warranty language matters: reputable manufacturers (Owens Corning, Johns Manville, GreenFiber) require an installed-depth ruler photo every 300 ft² and coverage chart signed by the crew lead.
- Pricing bands in 2026 across our Calgary, Edmonton and GTA crews run C$1.75–C$3.20/ft² for a straight top-up, C$4.50–C$7.90/ft² when air-sealing and baffles are included, and C$2.10–C$3.40/ft² for full removal before top-up.
How we source this content
Every page on roofinsulation.ca is written by a working estimator, reviewed by a professional engineer, and cross-checked against the National Building Code of Canada, NRCan EnerGuide procedures, ASHRAE Fundamentals and CMHC research reports. Job-cost figures are drawn from our own installed-project database (n = 2,000+ Canadian attics, 2018–2026) and refreshed each quarter.
Primary references cited on this page
- National Building Code of Canada 2020, Part 9.36 – Energy Efficiency
- NRCan – EnerGuide Rating System v.15 Technical Procedures
- Canada Greener Homes Grant – Eligible Retrofits
- Building Science Corporation – BSD-149: Unvented Roof Assemblies
- ASHRAE Fundamentals 2021 – Ch. 25 Heat, Air, and Moisture Control
- CMHC – About Your Attic Ventilation
- City of Calgary – Building Permits & Insulation Upgrades
Disclaimer: Information on this page is general Canadian building-science guidance and does not replace an on-site inspection by a qualified contractor, energy advisor or professional engineer. R-value targets, rebate amounts and code references are current as of 2026-07-15 and may change; verify with your local building department and NRCan before making a purchase decision.