Common questions about crawl spaces
- Can ‘dormant’ mold spores appear and affect a crawl space?
- Can I use plastic sheeting as a vapor barrier?
- Can you build a pole barn house with a crawl space?
- Crawl space is infested with mold, how do we go about properly fixing it?
- Does crawl space encapsulation increase home value?
- Does encapsulating a crawl space really work and is it worth the money?
Eliot crawl space encapsulation — local context
If your Eliot crawl space stays damp, the town's geography is usually why. Eliot sits at just 7 feet above sea level and is drained by Sturgeon Creek and the tidal Piscataqua River, with about 7% (1.54 of 21.32 sq mi) of the town being water — per Wikipedia's Eliot, Maine geography (US Census/USGS) — so a high seasonal water table pushes moisture up through dirt and fieldstone crawl spaces. Eliot's 2025 Comprehensive Plan calls its housing "an aging housing stock": roughly two of every three homes were built since 1970 and only 22% after 2000 — exactly the older homes where vented crawl spaces trap decades of moisture. Encapsulation seals it: a 12-mil wall / 20-mil floor vapor barrier plus dimpled drainage matting, a dehumidifier, and a sump. Our crawl space encapsulation runs $3,000–$25,000. Because York County is an EPA Radon Zone 1 area, radon mitigation — a separate $1,950–$2,250 add-on — may be advised.
What a recent customer said
"After obtaining three estimates for crawl space encapsulation + sump pump installation, we (and our neighbors) landed on 603 Basement Solutions. They were, by far, the most professional and communicative during the estimation process - because we could not be present when the work was done, this was very important to us. Alex discussed what was to be done, using what materials, and how long it would take to complete. He answered our many questions. After signing on, the communication with Isabel at the home office was outstanding, from start to finish. All went as planned, and when completed, Gerald, the lead on the project, provided a thorough explanation. I'd hire this company again in a New York minute, although the work was done in Maine."
Frequently asked questions
Why do Eliot crawl spaces have a moisture problem?
Eliot sits at just 7 feet above sea level and is drained by Sturgeon Creek and the tidal Piscataqua River, with about 7% of the town's 21.32 square miles being water (Wikipedia, citing US Census/USGS). That low elevation next to tidal water keeps the seasonal water table high, which pushes moisture up through dirt and fieldstone crawl spaces. Encapsulation with a 12-mil wall / 20-mil floor vapor barrier, dimpled drainage matting, a dehumidifier, and a sump seals that moisture out.
Should an Eliot crawl space encapsulation include radon mitigation?
It may. Eliot is in York County, which the EPA's Map of Radon Zones designates Zone 1 — the highest tier, meaning a predicted average indoor screening level greater than 4 pCi/L. A dirt or fieldstone crawl space is an open soil-gas path, so radon mitigation is sometimes advised alongside encapsulation. It is a separate add-on, typically $1,950–$2,250, and we test before recommending it.
Are older Eliot homes more likely to need crawl space encapsulation?
Often, yes. Eliot's 2025 Comprehensive Plan describes the town's housing as aging: about two of every three homes were built since 1970 and only 22% in 2000 or later. Older New England homes are where vented dirt and fieldstone crawl spaces — and decades of accumulated moisture damage — most commonly show up, which is exactly what encapsulation is built to correct.
Crawl Space Encapsulation in nearby New England towns
More 603 services in Eliot
- Basement Waterproofing in Eliot, ME
- Basement Finishing in Eliot, ME
- Foundation Crack Repair in Eliot, ME
- Radon Mitigation in Eliot, ME