Spray Foam Insulation in Mamaroneck, NY

Spray Foam Insulation in Mamaroneck has to account for water. The village sits on a harbor on Long Island Sound with the Mamaroneck and Sheldrake rivers running through it, and the village government notes that the Army Corps counts its largest floods in 1955, 1972, 1975 and 2007, with more in 2011, 2012, 2020 and 2021. The remnants of Hurricane Ida devastated parts of the village on September 2, 2021, forcing evacuations. Any plan for a basement or lower level here starts with that history.

Housing that has seen a lot

Survey data for 2019 to 2023 puts the village's median build year at 1953, with 38.1% of its roughly 7,900 units built before 1940. Wealthy New York families once kept summer houses along the shore in Greenhaven, Orienta and Shore Acres; Old Rye Neck was settled in the 1880s and Rye Neck in the 1920s and 1930s. Washingtonville, known as The Flats, is low-lying. So the village has shore houses, early twentieth-century neighborhoods and denser blocks near the rivers.

Below the first floor

In a house that has flooded or could flood, we avoid materials that soak up water below the flood line. Fiberglass batts and cellulose in a basement that takes water have to be torn out afterward. Closed-cell foam does not absorb water and holds up better, and the Army Corps project the village describes would deepen and widen both rivers but is not yet funded. Before any lower-level work, we ask about past water, look for high-water marks and recommend drainage fixes where they are needed.

Above the first floor

Attics and upper floors in Mamaroneck are like those anywhere else in the area: older attic floors leak air, kneewalls are uninsulated and top floors overheat in summer. Sealing and insulating the attic gives the same comfort gains here as in any inland village.

Rebuilding after a flood

If you are rebuilding a lower level after flood damage, this is the time to choose materials that tolerate water. Closed-cell foam on foundation walls and the rim joist, with water-tolerant finishes over it, holds up better than batts and paper-faced drywall. Above the flood line, ordinary attic sealing and insulation apply. We plan the two zones separately on the quote.

Owners, renters and code

About 57% of occupied units are owner-occupied. The state energy code applies, with Westchester in Climate Zone 4. Depending on your address, permits go through the village or the town of Mamaroneck, and houses in flood zones may face added rules for lower-level work, so ask the building department before you renovate.