Preston Construction & Spray Foam

Preston Construction & Spray Foam is an insulation outfit that also builds decks and wheelchair ramps. Its website says it has helped hundreds of people across New Hampshire and York County, Maine lower their bills, and names Manchester, Nashua and Concord as its service area. On Thumbtack it describes injectable wall foam, open- and closed-cell spray foam, ADA ramps and bathrooms, decks and porches, additions, windows and mini-split systems. On Thumbtack all six ratings are five stars. A May 2023 review described an injectable insulation job: the crew showed up on time, was up front about existing challenges and finished on schedule. Days later, another customer wrote that the company built a deck and a wheelchair ramp for their father. In a November 2024 review, a homeowner said Warren and Preston Construction quoted and completed a crawl space project focused on value, and a January 2025 customer said they returned calls, provided a quote and completed the job very quickly. The newest, from April 2026, praises the quick response and follow-up. The Better Business Bureau gives the company a C- and shows one complaint on file. A 2023 BBB review reads simply "Horrible horrible horrible," saying the project had been due to be finished by the end of September and the customer was still waiting. The company says it has been in business 20 years on its website and 29 years on Thumbtack. Its website advertises free estimates.