Frequently Asked Questions

Cellulose insulation provides better coverage in irregular spaces and reduces air gaps that fiberglass batts leave behind. Blown-in cellulose fills around obstacles like wiring and framing, creating a more consistent thermal barrier. This matters most in older Maine homes with uneven joist spacing and retrofit applications where complete coverage is difficult to achieve.

Rim joists are the perimeter boards where floor framing meets foundation walls, and they're one of the largest sources of heat loss in basements. Cold air infiltrates through these unsealed wood connections, causing drafts and cold floors above. Insulating rim joists stops this air leakage and reduces heating costs significantly in New England homes.

Dense-packed cellulose is blown into enclosed wall cavities through small access holes drilled from outside or inside. The material compresses as it fills the space, eliminating voids around wiring and blocking. Holes are plugged and finished after installation, making this approach practical for older homes that were built with little or no wall insulation.

Kneewalls are short vertical walls in finished attic spaces or bonus rooms, typically separating conditioned space from unconditioned attic areas. Without proper insulation and air sealing behind them, heat escapes into the cold attic cavity. This causes uncomfortable temperature swings in upstairs bedrooms and bonus rooms during winter months.

Many attic, basement, and air sealing projects qualify for Efficiency Maine incentives when completed by approved vendors like Ecofit Insulation. Rebate amounts depend on insulation type, coverage area, and pre-existing conditions. Scheduling an assessment determines eligibility and helps calculate potential rebate values before work begins.

Heat escaping through insufficient attic insulation warms the roof deck, melting snow that refreezes at cold eaves and forms ice dams. This cycle repeats throughout winter, causing water backup and potential interior damage. Proper attic insulation keeps the roof deck cold, preventing the melt-refreeze cycle that creates damming.

Most older homes were built with minimal or no basement and crawlspace insulation, allowing cold air to infiltrate through foundation areas. Floor framing sits directly above this cold space, transferring chill into living areas. Insulating basement rim joists and crawlspace perimeters stops this cold air infiltration at the source.

Air sealing stops air movement through cracks and gaps, while insulation slows heat transfer through solid materials. Both work together—air sealing eliminates convective losses and insulation reduces conductive losses. Sealing air leaks first makes insulation more effective because it prevents airflow from bypassing the thermal barrier.

Maine's cold climate favors insulating crawlspace perimeters and treating the space as conditioned rather than maintaining vented crawlspaces. Vented crawlspaces introduce cold air that chills floors and strains heating systems. Insulating foundation walls and sealing vents keeps the crawlspace warmer and reduces moisture issues common in this region.

Basements lose heat through foundation walls and rim joist areas, creating cold air that rises into living spaces and forces heating systems to work harder. Insulating these areas stops heat loss at the foundation level, stabilizing temperatures throughout the home. This reduces floor chill and eliminates the drafty feeling common in multi-story New England homes.