Uninsulated wall cavities are standard in Westchester County homes built before the 1970s — which is a large share of the housing stock here. Cold walls, drafts near outlets, and rooms that never hold temperature are the telltales.
Evergreen Insulation dense-packs existing walls from the outside with minimal disruption: small holes, cellulose packed to stop convection, plugs and touch-up when done.
Blown at pressure so it fills the full cavity and blocks air movement — not the loose fill of decades past.
Small access holes per stud bay, from outside where siding allows. No demolition, done in a day for most homes.
Dense-packed walls cut both heat loss and street noise noticeably.
Wall scan to map empty and partial cavities
Access plan (exterior or interior) and written price
Dense-pack installation bay by bay
Plug, seal, and finish
An outlet-cover check or thermal scan answers it in minutes — we do this during the free assessment. Pre-1970 homes are usually empty unless someone retrofitted.
In an uninsulated house, walls are the second-biggest loss after the attic. Combined with attic work it commonly cuts total heating costs 20–30%.
Written pricing, no obligation, no pressure.
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