Spray Foam Insulation in Larchmont, NY

Spray Foam Insulation in Larchmont often starts with a house that was never meant for winter. After 1872 Larchmont Manor became a summer resort for wealthy New Yorkers, and many of its Victorian cottages and grand hotels, such as the Bevan House and the Manor Inn, still stand, converted into year-round homes. Survey data puts the village's median build year at 1940, with about 49.8% of housing built before 1940 and another 13.7% in the 1940s.

Why summer houses are leaky

A cottage built for July had no reason to be airtight. Many have balloon-framed walls, shallow attics under complicated roofs, porches enclosed into rooms, and additions from several different decades. Each joint between old and new is a potential leak. We go through those houses carefully: the attic and kneewalls first, then the enclosed porches and additions, then the basement and rim joist.

On the Sound

Larchmont lies on Long Island Sound, with Manor Park running along the water. Houses near the shore get more wind and damp air than inland houses, and low lots can have high water tables. For basements and crawl spaces near the water, closed-cell foam is our usual choice because it does not absorb water, and we check for past flooding before insulating anything below the first floor.

Small village, close neighbors

The village covers 1.10 square miles and had 6,630 residents in 2020, with about 73% of occupied units owner-occupied according to survey data. Houses are close together and driveways are short, so we plan equipment placement before the job and keep the work area tidy.

Enclosed porches and additions

Many Larchmont cottages have porches enclosed decades ago and additions from several eras. Those rooms often sit on piers or a shallow crawl space with little or no insulation below the floor. We insulate the floor from beneath with closed-cell foam where there is access, seal the joints where the addition meets the original house, and treat the low roof slopes above with dense-pack or foam.

Larchmont or Mamaroneck?

Much of the area with a Larchmont mailing address actually lies in the unincorporated town of Mamaroneck, not the village. That matters for permits. If your work needs one, it goes through the village or the town depending on where the house sits. The state energy code applies either way, with Westchester in Climate Zone 4.