Straightforward Insulation for Marlborough, NH Homes

We install spray foam and cellulose insulation for homeowners in Marlborough NH and the surrounding Cheshire County area.

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What We Install in Marlborough NH Homes

Our insulation services cover both ends of the home: spray foam seals out moisture and drafts in basements and crawl spaces, and cellulose gets blown into the attic for full coverage. Each project is matched to what your home actually needs.

Spray Foam Insulation

Spray foam creates an airtight, moisture-resistant seal in basements and crawl spaces, delivering a high R-value per inch with a clean install.
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Cellulose Insulation

For attics, we recommend cellulose. Made from recycled materials, it's blown in to fill cavities and cover the full attic floor for coverage that holds up over time.

The Farnum Insulators Process

1

Get a Free Estimate

It starts with a free quote. Our estimator walks the property and explains what they find, with blower door and infrared testing available as a separate service.

2

We Build Your Plan

Based on what our estimator sees during the visit, we put together a plan matched to your home's insulation needs and walk through it with you so you know exactly what to expect.

3

We Get to Work

On installation day, our crew keeps you updated as the work moves along, answers any questions, and leaves your home as clean as they found it.

4

You Feel the Difference

The work itself typically takes a few hours to a few days, and once it's done, you'll notice a steadier home with fewer drafts.

See the Difference We Make

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Your Marlborough Home Is Ready. Are You?

You can't see the difference insulation makes, but you can feel it every day you're home. See what your home actually needs.
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Why Homeowners Choose Farnum

We built this company on honest, BPI-certified evaluations and installations done properly the first time.

Real Feedback From Real Homeowners

Discover why Farnum Insulators is the #1 top-rated insulation company in Southeastern VT & Southwestern NH!

Serving Marlborough and Surrounding Cheshire County Communities

We serve Marlborough, New Hampshire and neighboring Cheshire County communities, including Keene and Swanzey. If your area isn't listed, contact us. We likely still cover it.
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Helpful Insulation Resources

Stay updated with the latest news, expert tips, and trends in insulation.

Frequently Asked Questions

Is spray foam or cellulose the better choice for a Marlborough NH basement?
Spray foam creates an airtight, moisture-resistant seal best suited to basements and crawl spaces. Cellulose is better for attics. Many homes benefit from both.
How much insulation does a typical Marlborough NH home actually need?
Attics should land between R-49 and R-60, and basement walls at R-15 or higher, which is the standard from Energy Star. We'll take a look at your home's current insulation during your free quote visit.
Will I need to be out of the house while spray foam is being installed in Marlborough NH?
It comes down to which areas we're treating and the product involved. We ventilate the workspace throughout the job and walk you through exactly what to expect during your free quote visit.
Can new insulation bring my energy bills down?
It comes down to how much insulation you have now and where the leaks are. Sealing and insulating those areas tends to make your home noticeably more comfortable. We'll identify the priority spots during your free quote visit.