
Advanced Portsmouth Insulation brings attic insulation, blown-in insulation, and air sealing to Exeter, NH homes - including the older Colonials and pre-war houses that need the most help. We respond within one business day.

Exeter homes built before 1960 routinely have attic insulation levels far below current NH code, and blown-in cellulose or fiberglass is the fastest way to bring them up to standard. Learn more about our blown-in insulation service and how it works for older New England homes.
Exeter winters regularly push attic temperatures below freezing, and homes with thin or compressed attic insulation pay for it every month in heating costs. Many pre-1940 Colonials in the historic core still have original newspaper-and- sawdust fill that lost its R-value decades ago.
Adding insulation to an Exeter home without sealing air leaks first is like wearing a sweater with holes in it. The stack effect in older two-story Colonials pulls cold air in at the basement and pushes warm air out at the attic, and air sealing breaks that cycle.
Many Exeter homes on the outskirts of town have vented crawl spaces that turn into cold, damp problem zones every winter. Insulating the crawl space floor joist bays - or encapsulating the entire crawl - stops cold floors above and reduces moisture buildup under the house.
Exeter Colonials and Federal-style homes typically have balloon-framed or platform-framed walls with no cavity insulation at all. Dense-pack blown-in wall insulation can be installed through small holes in the exterior siding without a full gut renovation.
Homes near the Squamscott River and in lower-lying parts of Exeter often deal with ground moisture wicking up into crawl spaces and unfinished basements. A properly installed vapor barrier stops that moisture before it causes rot, mold, or structural damage.
Exeter sits in southern Rockingham County in IECC Climate Zone 6, where winter heating loads are among the highest in the country. Attic insulation requirements under current NH building code call for R-49 or better, but a large share of Exeter homes - especially those built before 1960 - have R-11 or less. The gap between what is in the attic and what the code requires shows up directly on the heating bill from December through March.
The Squamscott River watershed and Exeter's low-lying downtown create additional moisture pressure that most inland NH towns do not face. Stone and brick foundations common in the pre-war housing stock absorb ground moisture easily, and without a crawl space vapor barrier or proper foundation wall insulation, that moisture migrates into the living space as humidity, rot, and mold growth. Freeze-thaw cycles that run dozens of times each winter also stress foundation masonry, widening cracks and creating new entry points for water and cold air.
Our crew works throughout Exeter regularly, and we understand the local conditions that affect insulation work here. The Exeter Building Department handles permit applications for insulation projects that involve attic work or conditioned spaces, and we are familiar with that process.
Many jobs we take in Exeter are in the historic core near Phillips Exeter Academy and along Water Street - two- and three-story Colonials with plaster walls, steep gable roofs, and original stone or brick foundations. These homes require a different approach than the vinyl-sided Capes on the newer subdivisions off Epping Road. We regularly work routes through Exeter on Route 101 and Route 108, serving homes from the Swasey Parkway neighborhoods all the way out to the town's eastern edge.
We also serve Hampton, NH to the southeast, where coastal conditions add salt air and storm exposure to the mix, and Stratham, NH to the north, where newer housing stock has its own set of insulation gaps.
Call or fill out the contact form, and we reply within one business day. We schedule Exeter visits around your availability, including early morning slots for homeowners who commute.
We inspect the attic, crawl space, and any problem areas you identify, then give you a written estimate before any work begins - no surprise costs once the job starts. Older Exeter homes often reveal issues during inspection that are easier to address before insulation goes in.
Most Exeter insulation jobs - attic blown-in plus air sealing - are completed in one day. You do not need to vacate the home for most blown-in attic work, though we ask that the attic access area be clear.
After the work is done, we do a final walk-through and provide the documentation you need to file for NH Saves rebates. We handle the permit sign-off with Exeter Building Department when required.
We serve all of Exeter, NH - from the historic district near the Squamscott River to the newer neighborhoods off Route 101. Free estimates, no obligation.
(603) 956-1359Exeter is a town of roughly 16,000 residents in Rockingham County, about 12 miles west of Portsmouth. The town served as New Hampshire's capital during the Revolutionary War, and that history is still visible in the dense historic district along Front Street and Water Street, where 18th- and 19th-century homes and commercial buildings stand in daily use. The Squamscott River runs through the heart of town, and Swasey Parkway along its banks is a gathering point for local events year-round. Exeter's history and geography shape the type of housing and the building challenges homeowners face here.
The housing stock in Exeter is a genuine mix: tight in-town lots near Phillips Exeter Academy with pre-war Colonials and Federal-style homes, and larger lots on the outskirts with vinyl-sided Capes and Colonials built in the 1980s and 1990s. Both types need insulation work, just different kinds. We also serve homeowners in nearby Dover, NH and Newmarket, NH for the same range of residential insulation services.
Creates an airtight seal that dramatically cuts heating and cooling costs.
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Learn MoreHigh-density foam offering superior R-value and moisture resistance.
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Learn MoreEnergy-efficient insulation solutions tailored for commercial buildings.
Learn MoreBlocks ground moisture from entering your crawl space and living areas.
Learn MoreProfessional vapor barriers that prevent condensation and mold growth.
Learn MoreOlder homes lose more heat. The sooner you insulate, the sooner you start saving - call us or fill out the form today.