Katonah homeowners have no shortage of insulation companies to call — what's scarce is one that gives a fixed written price, explains what the job actually needs, and answers the phone after the deposit clears. That's the standard Evergreen Insulation works to across Westchester County, Katonah included.
Westchester's older housing stock — from pre-war Yonkers apartments to 1960s White Plains colonials — often has inadequate insulation, driving up Con Edison bills year-round. Our BPI-certified insulation crews upgrade attics, walls, and basements across Westchester with spray foam, blown-in cellulose, and rigid board — cutting energy costs by up to 40%.
Blown-in and batt insulation for attics — the #1 source of heat loss in most homes. Immediate energy savings.
Dense-pack cellulose and injection foam for existing walls. No major demolition required.
Closed-cell and open-cell spray foam for maximum R-value, air sealing, and moisture protection.
Rigid board, spray foam, and vapor barriers for below-grade spaces. Stop moisture and heat loss at the foundation.
Yes — Katonah is inside our core Westchester County service area, not the edge of it. Our crews are in and around Katonah regularly, which matters for scheduling and for honoring warranty visits.
Most Katonah estimates are scheduled within a few days, and urgent calls are prioritized the same day whenever crews are in the area. Call (914) 425-5319 for the current schedule.
It depends on the scope, which is why we price from an on-site assessment — not over the phone. What we commit to: the estimate is free, the price is written and fixed, and there are no change-order surprises mid-job.
Tell us about the job — we'll come take a look.
Fill out the form below and we'll get back to you within 24 hours.
