Spray Foam Insulation in Jamaica Plain, MA

Spray Foam Insulation in Jamaica Plain covers a neighborhood of 4.4 square miles with 41,012 residents at the 2020 census, according to Wikipedia. Puritans settled it for farmland soon after 1630 as part of Roxbury; it later broke away as part of West Roxbury in 1851, and joined Boston in 1874. Wikipedia lists it among Boston's streetcar suburbs, and its housing shows that history: Victorians, two-families and triple-deckers on hilly streets.

Victorian houses

JP has many large Victorian and late-19th-century homes. Their tall plaster walls are often empty, their attics are broken up by dormers and turrets, and they are commonly balloon framed. Sealing the bottom and top of each wall bay, dense-packing the walls and sealing the attic floor make the largest difference.

Two-families and triple-deckers

Multi-unit buildings in JP have the same issues as elsewhere in the city: shallow roof cavities, empty walls, porches tied into the frame and bare rim joists. We plan them as whole buildings and schedule unit by unit.

Finished third floors

Many JP homes have finished attic rooms with sloped ceilings and kneewalls. Those rooms are often the most uncomfortable in the house. Closed-cell foam in the rafters and sealing the kneewall floors are the usual fixes.

Condos

Many older JP houses have been converted to condominiums. In a condo, the roof, basement and exterior walls may be common property. Check your association documents; we can quote the building as a whole or just your unit's portion.

Barriers

Knob-and-tube wiring and vermiculite are common in houses this old. City guidance notes that inactive knob-and-tube does not stop insulation. We check both before quoting.

Costs for a larger Victorian

Larger houses have more wall and attic area, so totals run higher than for a small Cape. HomeGuide lists dense-pack cellulose at $1.60 to $4.20 per square foot and roof deck foam at $1,500 to $9,000 nationally. We list the attic, each floor's walls, the rafters of any finished rooms and the rim joist as separate lines, so you can start with the biggest gains and do the rest later.

Book a visit

We look at the house or building and send a written quote. Get a free estimate