From Scandinavian carpenters to the suburban boom
Spray Foam Insulation in Eltingville, NY
Older carpenter-built homes and post-1964 houses, each with its own weak spots.
- Free on-site estimates
- Written quote showing foam type, thickness and R-value for each area
- Moisture, leaks and flood history checked before anything is covered

Two Generations of Houses
Spray foam insulation in Eltingville works on two very different kinds of houses. Wikipedia notes that in the early 20th century the area was settled largely by Scandinavians, mostly Norwegians, and that many older South Shore homes were built by Scandinavian carpenters. After the Verrazzano-Narrows Bridge opened in 1964, Eltingville saw massive new home construction as farmland was developed, and many of the older houses have since been torn down.
The older houses
Surviving early 20th century houses have solid framing but little or no insulation in walls, open framing bays and small attics. We block the bays, dense-pack the walls, and seal the attic before adding depth. Old wiring is checked before any wall is filled.
The boom-era houses
Houses built from the late 1960s on typically have thin attics, bare rim joists, and cold rooms over garages. Wikipedia notes the rapid growth initially left the area short of sewer lines, which later had to be built. That speed of construction also shows up in insulation details: gaps at top plates, uninsulated kneewalls and leaky attic hatches are common.
What we do most here
Attic air sealing with a blown-in top-up to the 2025 NYC code's R-49 ceiling value. Closed-cell foam on the rim joist. Foam in garage ceilings under bedrooms. Kneewall and sloped-ceiling work in capes and expanded attics.
Owners planning to stay
Wikipedia's census summary for the Great Kills-Eltingville tabulation area shows 22.9% of occupied units are rented. Most Eltingville calls come from owners making long-term improvements.
We will look at the house and send a written price for each area. Get a free estimate
What to Know in Eltingville
- Scandinavian builders. Many older homes in Eltingville and elsewhere on the South Shore were built by Scandinavian carpenters in the early 20th century (Wikipedia).
- Post-1964 boom. After the bridge opened in 1964, Eltingville saw massive new home construction, and the rapid growth initially left the area short of sewer lines.
- Owner-occupied. 22.9% of occupied units in the Great Kills-Eltingville tabulation area are renter-occupied (2020 census).

Eltingville Questions
Can you insulate an older carpenter-built house without damaging it?
Yes. Dense-pack goes in through small holes that are patched, and attic work is done from above.
What usually needs attention in a 1970s Eltingville house?
The attic, the rim joist and any room over the garage.
Do you remove old attic insulation?
Only if it is wet, soiled or blocking air sealing. Otherwise we add on top.
Is attic insulation or wall insulation the better first step?
In most Eltingville houses, the attic. It is cheaper per square foot, quicker, and often where the biggest leaks are. Walls come next, especially in older carpenter-built houses with empty cavities.
Do you need to come inside to insulate walls?
Not always. Dense-pack can often go in from the outside behind a removed course of siding. Inside access works too, with holes patched afterward.
Free Estimates in Eltingville, NY
Eltingville homeowners: request a free estimate.
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