Home › Guides › Asbestos in Older New Hampshire Homes

Asbestos in Older New Hampshire Homes

Updated 2026-10-10 · 6 min read

Where asbestos hides in older NH homes, when to leave it alone, and NHDES rules on inspections, licensed contractors, the homeowner exemption and disposal.

Where asbestos shows up

Asbestos was added to building products for strength and heat resistance. You generally can't tell whether a material contains it just by looking, so EPA advises treating suspect material as if it does and leaving it alone (EPA, Protect Your Family). Common places in older homes, from EPA and NHDES fact sheet ARD-59:

Vermiculite attic and wall insulation
Pipe insulation and wrap, boiler and furnace insulation, and door gaskets on oil and coal furnaces
Vinyl floor tiles, the backing on sheet vinyl, and the black mastic glue under tiles
Roofing and siding shingles, including cement (transite) siding
Textured "popcorn" ceilings, joint compound and patching compounds
Walls and floors around wood stoves protected with asbestos paper, millboard or cement sheets
Caulk, window glazing, roofing tar and duct wrap

If it's in good shape, leave it alone

According to EPA, asbestos material that isn't damaged or disturbed is not likely to pose a health risk, and the best thing is usually to leave it alone. Fibers are released when the material is damaged, cut, sanded, drilled or scraped. EPA's advice: don't sweep or vacuum suspect debris, don't sand or level old asbestos flooring (cover it with new flooring if you can), and don't take samples yourself, since doing it wrong can be more hazardous than leaving it. If material is more than slightly damaged, or a remodel will disturb it, it's time for a trained professional.

Vermiculite gets special treatment. EPA says most vermiculite insulation sold in the US came from a Libby, Montana mine that was contaminated with asbestos, so you should assume it contains asbestos and not disturb it. Don't store things in an attic with vermiculite, and don't try to remove it yourself (EPA, vermiculite insulation).

NH rules before you renovate or demolish

New Hampshire regulates asbestos under RSA 141-E and the NHDES rules Env-A 1800, which were substantially rewritten in November 2024. NHDES says you must comply with Env-A 1800 before renovation or demolition even if your town has already issued a permit. The main requirements:

Inspection first: before renovating or demolishing, the owner must have the affected area inspected by a certified asbestos inspector (Env-A 1804.01). For buildings with 4 or fewer units, no inspection is required if the work only affects materials made solely of wood, stone, fiberglass, glass, plastic, metal, foam or rubber.
Licensed contractor: when a project will disturb asbestos, the owner must hire a state-licensed asbestos contractor (NHDES). A major abatement project, meaning more than 10 linear feet, 25 square feet or 3 cubic feet of regulated asbestos material, requires a licensed abatement company with certified supervisors and workers. Smaller minor projects require certified supervisors and workers (ARD-59).
Notification: NHDES must receive written notice at least 10 working days before a major abatement project starts (NHDES).
Shared responsibility: NHDES says both the property owner and the contractor are responsible for following the asbestos rules, and both can face enforcement (ARD-59).

Demolition notices

Under Env-A 1800, demolition means taking out any load-supporting structural member, so it can include part of a renovation, not just tearing down a whole house. A demolition notice is required even when the inspection finds no asbestos. The general rule is 10 working days' notice. For a single-family home or a residential building with 4 or fewer units, the current rule (Env-A 1806.05(h), effective January 1, 2026) calls for electronic notice 5 business days before demolition, along with either an inspection report showing no asbestos or proof that the asbestos was properly removed. The NHDES web page still describes the 10-day timeline, so confirm the current requirement with NHDES before you schedule.

The homeowner exemption

Under Env-A 1803, the owner of a private single-family home that isn't used as a rental can remove asbestos from it without a license, and is subject only to the homeowner rules in that part. The conditions:

You personally do the work. The exemption doesn't extend to anyone you hire.
The work isn't done within 6 months of selling or renting the property.
Keep the material wet with amended water before, during and after removal, take it out in small sections, and lower it rather than dropping or throwing it.
For asbestos roofing or cement siding, don't sand, saw or grind it, protect the ground with poly drop cloths, and remove cement siding intact where possible.
Package waste wet in leak-tight containers or double bags at least 6 mil thick, wrap large pieces in two layers of 6 mil sheeting, and label it with asbestos warning labels plus your name and the address.
Clean up with repeated HEPA vacuuming and wet cleaning until no visible residue remains.

Disposing of asbestos waste

NHDES requires all asbestos waste to go to a facility it has approved to accept it (NHDES). A homeowner must submit the Homeowner Notice of Asbestos Disposal form to NHDES no later than the day transport begins and keep a copy for at least 2 years. The waste has to leave the site within 30 days after the work is done, and a copy of the waste shipment record goes to NHDES within 30 days of delivery or pickup (Env-A 1803.06 to 1803.08).

Few disposal sites take asbestos directly from homeowners. NHDES's ARD-59 lists the permitted NH facilities, most of which accept it only from commercial haulers and abatement contractors, and recommends hiring an abatement contractor for small amounts (1 to 20 bags) or a commercial waste company for larger loads.

Even if you qualify for the exemption, EPA recommends having removal done by trained professionals, and NHDES notes you can hire a licensed contractor if you're uncomfortable doing it yourself.

Rentals and federal rules

Landlords don't get the homeowner exemption. Under RSA 141-E, NHDES says owners of residential rental property must keep areas tenants can reach free of asbestos inhalation hazards, and damaged asbestos in rental units or common areas has to be abated by a licensed contractor (ARD-59).

The federal asbestos NESHAP rule generally excludes residential buildings with 4 or fewer units, unless they're demolished or renovated as part of a larger commercial or public project (EPA). That doesn't help NH homeowners much, because Env-A 1800 covers residential buildings too. Likewise, EPA notes federal law doesn't require training for people handling asbestos in single-family homes, but some states do, and New Hampshire is one of them.

Finding an inspector or contractor

NHDES publishes lists of licensed asbestos abatement contractors and companies with certified asbestos inspectors. EPA suggests using separate firms for inspection and removal to avoid a conflict of interest, asking each worker for proof of training, getting a written contract that covers the work plan, cleanup, notifications and disposal, and getting written assurance at the end that procedures were followed (EPA).

Ask any remodeler or demolition contractor how they handle the inspection before they open walls, ceilings or floors. Older homes often have lead paint too; see our lead paint guide and contractor hiring checklist.

This guide is general information, not legal or medical advice. Asbestos rules changed in 2024 and 2026 and can change again, so confirm current requirements with the NHDES asbestos program and your town before work starts.