Spray Foam Insulation in Cambridge, MA

Spray Foam Insulation in Cambridge mostly involves older buildings in a dense city. Wikipedia lists Cambridge at 118,403 residents in 2020, directly across the Charles River from Boston. It was founded in December 1630 and played a major role in the American Revolution. Its neighborhoods hold 19th- and early 20th-century single-family homes, two-families and triple-deckers, many now divided into condos.

Condos and associations

Many Cambridge houses are condominiums. Roofs, basements and exterior walls are often common property, so insulating them is an association decision. We can quote the whole building or just the parts inside your unit.

Dense-pack in plaster walls

Older Cambridge homes usually have plaster walls with empty bays. Dense-pack cellulose fills them through small holes, from inside or outside. We check for live old wiring before filling.

Attics and top floors

Top-floor units under shallow roofs or finished attics are often the hardest to keep comfortable. Depending on the roof, we blow loose fill into the cavity, spray closed-cell foam in the rafters, or recommend adding insulation at the next re-roof.

Rim joists

The basement rim and sill are the easiest place to cut drafts. HomeGuide lists rim joist foam at $2,000 to $2,500 nationally.

Mass Save

Mass Save lists no-cost assessments for one- to four-unit homes and 75 to 100 percent off approved insulation. Start there if you want those incentives.

Timing and access

Cambridge streets are dense and parking is tight, so we plan equipment placement and hose runs ahead of time. Basement and wall work can happen in any season; roof cavities and attics are easier outside the coldest weeks. If you live in a condo building, we can coordinate with the association so common-area work and unit work happen on the same visit and neighbors know what to expect.

Get started

We visit, look at the building and send a written quote. Get a free estimate