Closed-cell spray foam insulation between attic roof rafters under a work light

BCI Blog

Spray Foam Insulation Guides

Costs, open-cell vs. closed-cell, safety, attics, basements and rim joists: everything Massachusetts homeowners ask before choosing spray foam.

Spray foam is the best air seal in insulation, and also the most misunderstood. These guides cover where it pays off, where another material is the better value, and how a professional installation should go.

14 articles · page 1 of 2

Installer spraying closed-cell foam between wall studs in a Massachusetts new build
Spray Foam

Spray Foam Insulation Cost in Massachusetts: What Drives the Price

What affects spray foam insulation cost in Massachusetts: open vs. closed cell, thickness, access, prep and code coatings, plus how to compare quotes fairly.

5 min read

Open-cell and closed-cell spray foam samples compared on a workbench
Spray Foam

Open-Cell vs. Closed-Cell Spray Foam: Which One Does Your Project Need?

Open-cell vs. closed-cell spray foam compared for New England homes: R-value, moisture, air sealing, sound, cost and where each one performs best.

4 min read

Spray foam installer in a supplied-air respirator and protective suit at a sealed work area
Spray Foam

Is Spray Foam Insulation Safe? What Homeowners Should Know

Is spray foam insulation safe for your home? Installation safety, re-occupancy times, odors, fire codes and how professional installers protect your family.

4 min read

Closed-cell spray foam applied to basement rim joists between floor joists
Spray Foam

Rim Joist Insulation: The Leakiest Spot in Your Basement

Why rim joists leak so much air in Massachusetts homes, the best way to insulate them with closed-cell spray foam or rigid foam, and what it does for comfort.

4 min read

Unvented attic with spray foam under the roof deck and HVAC equipment on a platform
Spray Foam

Spray Foam in the Attic: When an Unvented Attic Makes Sense

When spray foam under the roof deck (an unvented attic) makes sense in Massachusetts, how it compares with insulating the attic floor and the code basics.

4 min read

Closed-cell spray foam applied to poured concrete basement walls up to the rim joist
Spray Foam

Spray Foam on Basement Walls: Is It the Best Choice?

Why closed-cell spray foam is often the best insulation for basement walls in Massachusetts: moisture control, air sealing, code coverings and alternatives.

4 min read

Installer spraying closed-cell foam on a crawl space foundation wall
Spray Foam

Spray Foam in Crawl Spaces: Walls, Floors and What to Avoid

How to use spray foam in a crawl space in New England: insulating walls vs. the floor above, vapor barriers, code coverings and common mistakes to avoid.

4 min read

Closed-cell spray foam covering the underside of a roof deck between rafters
Spray Foam

Spray Foam Under the Roof Deck: Benefits, Risks and Code Basics

Spray foam under the roof deck in Massachusetts: when it makes sense, closed-cell vs. open-cell, condensation control, shingle concerns and code basics.

4 min read

Open-cell spray foam filling interior wall cavities for sound control during a renovation
Spray Foam

Does Spray Foam Soundproof a Room? What Really Reduces Noise

Does spray foam soundproof walls and ceilings? How open-cell foam, mineral wool and air sealing reduce noise, and what it takes to truly block sound.

4 min read

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