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Insulation · Hudson, MA

Insulation in Hudson, Massachusetts

Compare contractors serving Hudson, Middlesex County — call them directly, or send one request and let the ones who want the job come to you.

30 contractors serving Hudson.

Contractors serving Hudson

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Mass Save in HudsonDepends on your gas service

Hudson gets its electricity from Hudson Light and Power Department, a municipal light plant, not from Eversource, National Grid or Unitil. Mass Save is funded through investor-owned utility bills, so the electric side of the program does not apply in Hudson: a home heated with oil, propane or electricity here does not qualify for the Mass Save Home Energy Assessment or the 75 to 100 percent insulation incentive through its electric account.

Gas is the exception. Insulation and air sealing replace nothing, so Mass Save only needs one participating account, and a Hudson home with gas service from an investor-owned gas company (National Grid, Eversource, Berkshire Gas, Liberty or Unitil) is a Mass Save gas customer: the free assessment, the 75 to 100 percent insulation incentive and the 0 percent HEAT Loan all apply through the gas account, even if the house heats with oil and only uses gas for hot water. Homes without a gas account should ask Hudson Light and Power Department about its own weatherization or efficiency rebates, which most Massachusetts light plants offer at a smaller scale.

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Insulation in Hudson — what to know

Permits in Hudson

Insulation in Hudson typically needs no standalone building permit, but your contractor should carry a Massachusetts HIC registration, with a CSL for any related structural work. Mass Save's participating-contractor list applies in Hudson only if you enroll through an investor-owned gas account; otherwise hire any HIC-registered, insured installer and check Hudson Light and Power Department's program requirements. Spray foam must meet the state fire and ignition-barrier code, requiring a thermal or ignition barrier over exposed foam. Confirm permit needs with the Hudson building department for larger renovations.

Where a permit is required, insulation work in Hudson is filed with the Hudson Building Department; see the Hudson Building Department’s contact, portal and who pulls the permit on permits.llc.

Typical project cost

In central Massachusetts, attic insulation typically runs $1,500–$4,000, dense-pack wall insulation $2,000–$6,000, and air sealing $300–$1,500; spray foam runs higher. Older downtown homes needing knob-and-tube or vermiculite work add to the total.

About Hudson homes

Hudson is a Middlesex County town of 19,947 on the Assabet River, with about 8,560 housing units and a median construction age near 54 years. The stock reflects its mill-town roots — prewar two-families and worker housing near the downtown and river, plus postwar and later subdivisions spreading outward.

That mix shapes insulation work. Older downtown homes often have balloon-framed, under-insulated walls, attics short of the R-49 target, and possible knob-and-tube wiring or pre-1981 vermiculite, while newer homes mainly need attic top-up and rim-joist air sealing in central MA's cold winters.

Common questions — Insulation in Hudson

Does Mass Save pay for insulation in Hudson?
It depends on your gas service. Hudson's electricity comes from a municipal light plant, which is outside the Mass Save electric program, but insulation only needs one participating account: a home with an Eversource gas account gets the no-cost assessment and the 75 to 100 percent insulation incentive through it, even if it heats with oil. Homes with no gas account use the light plant's own weatherization rebate.
What insulation incentives are available in Hudson then?
Start with Hudson Light & Power's own efficiency programs. The federal 25C insulation credit expired at the end of 2025, so there's no federal credit for 2026 work.
My older downtown Hudson home has knob-and-tube. Does that block insulation?
It must be addressed first. Knob-and-tube has to be remediated or de-energized before walls are dense-packed, since buried live wiring is a fire hazard.
Could my older Hudson home have vermiculite in the attic?
If it predates 1981, yes. Vermiculite can contain asbestos, so have it tested and, if positive, professionally abated before new attic insulation.
Do I need a permit to insulate in Hudson?
Usually not for insulation alone. Hire an HIC-registered contractor, ensure any spray foam meets the state ignition-barrier code, and check with the town building department for larger structural work.

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