Insulation Contractor in Plainview, NY

Plainview and Hicksville were built out together in the post-war expansion. Same tract builders, same floor plans, same original insulation materials. Carlos spent his first 5 years in business learning the Plainview housing stock because his early referrals came from Hicksville neighbors who had family in Plainview.

Today we do 6-10 Plainview jobs a year. We know the split levels on Central Park Road, the hi-ranches on Stewart Drive, the ranches on Old Country, and the larger colonials on the south side near the Seaford-Oyster Bay Expressway. Javier (our estimator) lives 15 minutes from Plainview and does most of the walk-throughs here himself.

1958-1968 split levels. The dominant style in central Plainview. 1,800-2,400 sqft, split entry, attached garage on the lower level. Original insulation was usually original fiberglass under 1970s aluminum foil insulation, or first-generation vinyl from the 1980s. These are excellent candidates for blown-in cellulose vinyl (value tier) or open-cell spray foam (premium).

1960s-70s hi-ranches. Second most common style. Very similar to the split but with a raised main level over a finished basement. Same treatment applies.

1970s custom colonials. Larger 2-story homes, 2,500-3,200 sqft, scattered through the south side. These are the best closed-cell spray foam candidates in Plainview.

Newer (1990s-2000s) developments on the east side. Larger homes near the Nassau-Suffolk border with original builder vinyl that is aging out. These are straightforward vinyl insulate jobs.

Tract home consistency. Because Plainview was built by a handful of builders, many houses on the same street are identical floor plans with identical insulation issues. If we are doing your neighbor, the quote for you will be almost the same number. We tell you this upfront.

Wall insulation. Pre-1980 Plainview homes were insulated to 1960s code, which is not much. Insulated vinyl (blown-in cellulose open-cell foam) adds R-3 to R-4 and noticeably reduces winter heating bills on these houses. We recommend it on about 70% of Plainview jobs.

Narrow side yards. Plainview lots are typically 60-80 feet wide, which leaves 7-10 feet on each side. Staging a crew around that is doable but requires planning. We use narrower ladders on side walls and carry panels at an angle.

Cul-de-sac logistics. A lot of Plainview streets are cul-de-sacs. Dumpster and supply truck staging has to be planned so we do not block neighbors. We always notify the 2-3 neighbors on either side before the job starts.

Split level on Central Park Road, 2024. Full blown-in cellulose open-cell foam open-cell spray foam in Sterling Gray with matching black aluminum trim wrap. 2,100 sqft exterior. 10 working days. $28,500. The homeowner told us his heating bill dropped $45/month the first winter.

Hi-ranch on Old Country Road, 2023. Full blown-in cellulose in Flagstone with white trim wrap. 1,900 sqft exterior. 9 working days. $21,000. Customer's neighbor had used us the year before.

1975 colonial on Washington Avenue, 2024. Full closed-cell spray foam in Deep Ocean with full air sealing package and dense-pack netting at cavities. 2,600 sqft exterior. 15 working days. $54,500.

Aluminum tear-off on Birch Lane, 2023. 1965 hi-ranch with original old aluminum foil insulation that was dented and chalking. Full tear-off, wall wrap, then blown-in cellulose over new OSB in two spots where the old sheathing was rotted. 2,000 sqft exterior. 11 working days. $24,000.

Plainview is in the Town of Oyster Bay building department (same as Hicksville and Massapequa). Insulation permits are pulled through the town office. Typical turnaround is 7-12 business days.

We pull every permit. You sign the application, we handle everything else. Permit fees are based on project value and included in every quote.

Review 1: "We interviewed four contractors and went with Long Island Insulation because Carlos was the only one who actually looked at the back of our house before quoting. He found water damage we did not know about and talked through exactly how they would fix it. The final price matched the quote to the dollar. The open-cell spray foam looks sharp and our gas bill went down $40 a month last winter." — Joseph L., Plainview · Insulated blown-in cellulose · 2024

Review 2: "I had Long Island Insulation insulate our 1970s colonial in Spray Foam. The crew was professional, the cleanup was perfect, and the finished house looks like something out of a magazine. Three neighbors have asked me for their number." — Anna R., Plainview · closed-cell spray foam · 2024

Q1: How much does insulation cost in Plainview, NY? A1: Most Plainview insulation jobs fall between $3,800 and $22,000 depending on scope. A basic attic air-seal and R-49 blown-in cellulose upgrade on a typical Plainview split or hi-ranch runs $3,800–$6,500. Full closed-cell spray foam on a larger 1970s colonial (2,500–3,200 sqft) typically runs $14,000–$22,000. All quotes are itemized with no hidden permit fees.

Q2: Do I need a permit for insulation work in Plainview, NY? A2: Most insulation work in Plainview falls under Town of Oyster Bay jurisdiction. Attic insulation upgrades and air-sealing generally do not require a building permit, but spray foam in new wall cavities or basement rim-joist work can require one depending on scope. We pull every required permit — you sign the application, we handle the filing, and permit fees are itemized in your quote upfront.

Q3: What insulation company is near me in Plainview? A3: Long Island Insulation Co. is headquartered on Old Country Road, roughly 8 minutes from any Plainview address. We've insulated 35-plus Plainview homes since 2011, most of them the split-levels and hi-ranches on Central Park Road, Stewart Drive, and Old Country. Our crew services Plainview, Hicksville, Syosset, Bethpage, and Woodbury with no travel surcharge.

Q4: How long does an insulation job take in a Plainview home? A4: A standard attic air-seal and blown-in cellulose upgrade takes 1–2 days for a typical Plainview split or hi-ranch. A full closed-cell spray foam job on a larger colonial takes 3–5 days. We schedule around your availability, crew arrives at 7:30am, and we do a full cleanup sweep each day before we leave. NYSERDA rebate paperwork (if applicable) is filed within 5 business days of job completion.

Q5: What is the insulation installation cost per square foot on Long Island? A5: On Long Island, blown-in cellulose attic insulation typically runs $1.50–$2.75 per square foot installed. Closed-cell spray foam runs $3.00–$5.50 per square foot at 2 inches. Open-cell spray foam runs $1.25–$2.25 per square foot. These ranges apply to standard Nassau County jobs — Plainview, Hicksville, Levittown, and Massapequa — and include material, labor, and cleanup. NYSERDA Home Performance rebates can offset $1,000–$5,000 of the total cost for qualifying households.