Here is a list of our most frequently asked questions. If you need more information before purchasing or can’t find an answer to your question feel free to contact us by visiting our contact page.
General FAQ
Can a home become too tight after air sealing?
The goal is a controlled enclosure with appropriate ventilation, moisture management and safe operation of combustion equipment. Random air leakage is not a reliable substitute for planned ventilation.
Can you insulate closed walls without removing drywall?
Dense-pack methods can be appropriate for certain enclosed cavities, depending on access and the wall assembly.
Does fiberglass stop drafts?
Fiberglass resists heat flow but is not an air barrier by itself. Air leakage should be addressed at the correct building enclosure layer.
Can you add fiberglass over existing attic insulation?
Often, when the existing material is appropriate and conditions allow, but air sealing and other issues should be considered first.
Can spray foam be installed in an existing finished wall?
Typically, our spray foam installations require access to the cavity. For enclosed existing walls, ask about dense-pack fiberglass retrofits instead.
Can closed-cell foam insulate 2×4 walls?
It can be useful when 2×4 cavities are accessible. Compliance and moisture performance must still be evaluated for the specific wall assembly.
Is closed-cell foam better than fiberglass?
Not always. Foam offers higher R-value per inch and can provide an air barrier, while fiberglass can be cost-effective where framing depth and a separate air-sealing approach are appropriate. We choose the solution to fit the building assembly.
Will wall insulation solve every cold room?
No single measure guarantees that result. Attic or floor gaps, air leakage, windows and heating distribution can also affect comfort. We discuss the visible conditions before defining the work.
Is spray foam always better for walls?
No. The right choice depends on cavity access, depth, moisture performance, air sealing and budget. We compare appropriate options for the actual wall.
Can you insulate walls without removing all the drywall?
Sometimes. Dense-pack fiberglass can suit enclosed cavities with suitable access and conditions. Obstructions and existing insulation can limit this approach.
Can you insulate floors under additions and enclosed porches?
Yes, when the underside is accessible and the proposed assembly is appropriate. We also assess cantilevers and floor transitions where heat loss and air leakage can occur.
Is spraying the floor the same as crawl-space encapsulation?
No. Underfloor foam typically establishes the insulation boundary at the first floor. Encapsulation addresses the crawl-space enclosure, including ground moisture, vents, foundation insulation and humidity management.
Do you have to remove existing fiberglass first?
Loose, damaged or obstructing insulation often needs removal for access and adhesion. We evaluate it and include any required removal explicitly in the estimate.
Will spray foam help with cold floors above my crawl space?
It can reduce heat transfer and air leakage through an appropriately selected floor assembly. Results depend on the home’s overall insulation, air sealing, heating system and crawl-space conditions.
Will it eliminate drafts?
It can improve cavity insulation, but fiberglass is not a substitute for an air barrier. Drafts may involve leaks at trim, penetrations, framing transitions or other parts of the home.