What is the total project cost to blow in fiberglass loose-fill insulation to R-50 in a 1,400 sq ft bungalow attic in Riverview NB?

For a 1,400 square foot bungalow attic in Riverview, expect to pay $1,800-$4,200 for blown-in fibreglass insulation to R-50, depending on your existing insulation level and access conditions.

The total project cost breaks down into several key factors. Material costs for blown-in fibreglass run approximately $0.45-$0.75 per square foot for the insulation itself to reach R-50 (roughly 13-15 inches of blown fibreglass). Labour and equipment add $0.85-$2.25 per square foot, bringing the total installed cost to $1.30-$3.00 per square foot. Your 1,400 square foot attic puts you right in that $1,800-$4,200 range.

Several factors influence where your project falls within this range. If your attic currently has R-20 insulation and just needs a top-up to R-50, you'll be at the lower end. However, if you're starting with minimal insulation (common in Riverview homes built in the 1970s-1980s), or if your existing insulation needs removal due to contamination or settling, costs increase significantly. Access difficulty matters tremendously — a standard attic hatch with good headroom keeps costs down, while tight crawl spaces or multiple roof levels requiring longer hose runs can add $500-$1,000 to the project.

Air sealing is critical before blowing insulation and often overlooked in cost estimates. Riverview's location near the Bay of Fundy means your home experiences significant wind pressure that drives air leakage through unsealed penetrations. Professional air sealing of pot lights, plumbing stacks, electrical penetrations, and the attic hatch typically adds $400-$800 to the project but provides 30-50% of the total energy benefit. Many contractors include basic air sealing in their insulation quote, but verify this upfront.

Ventilation considerations are especially important in Riverview's Maritime climate. Your attic needs balanced soffit-to-ridge ventilation to prevent moisture buildup during humid summers and ice dam formation during cold winters. If your soffits are blocked or you lack ridge venting, adding proper ventilation baffles and potentially ridge vents could add $300-$800 to the total project cost.

Rebate opportunities can significantly offset your investment. The NB Power Total Home Energy Savings Program offers rebates up to $1,000 for attic insulation upgrades, while the federal Canada Greener Homes Grant provides up to $1,200 for attic insulation. Combined rebates could reduce your net cost by $1,500-$2,200, but require a pre-retrofit EnerGuide evaluation before starting work.

For a project this size, always get three quotes — insulation pricing in the Moncton area (including Riverview) varies 25-40% between contractors for identical scope. Verify that quotes include air sealing, ventilation baffles, and cleanup, as these "extras" can add surprise costs if not specified upfront.

This is typically a professional job rather than DIY. While blown fibreglass is less specialized than spray foam, achieving proper coverage density and air sealing requires commercial blowing equipment and experience. Most building supply stores rent blowing machines, but professional installers achieve significantly better results and can identify and address air leakage issues that homeowners often miss.

Need help finding a professional insulation contractor in the Riverview area? New Brunswick Insulation can match you with local contractors for free quotes on your attic upgrade project.