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Homeowners call Weathertight Spray Foam for spray-foam insulation in attics, crawl spaces, walls, ceilings, floors, foundations, basements, and ducting. The company describes itself as locally owned and family-run, with more than 15 years of industry experience, serving homes and businesses across New Hampshire and Southern Maine; Brad Preston is listed as owner. Its listed business address is 343 Court St, Laconia, New Hampshire, while directory profiles identify the company in Gilford. The nine written reviews from 2024 and 2025 are consistently positive. Homeowners describe careful attic, subfloor, garage, cottage, retrofit, and house work, with praise for clean crews, clear estimates, quick turnaround, communication, and attention around windows. A 2024 reviewer said the subfloor work was completed at a great price compared with larger companies, and another described the garage application as thorough with full cleanup. The company offers open-cell, closed-cell, and hybrid spray foam, along with foundation waterproofing. Before booking, confirm the recommended foam type, scope, pricing, ventilation or moisture plan, warranty, and the exact service location for your project. This is a practical fit for homeowners seeking insulation installation or related foundation work across New Hampshire and Southern Maine. The Laconia address and Gilford directory references should be reconciled when requesting an estimate.
“Kimberly Orr and Brad Preston are co-owners and applicators at Weathertight Spray Foam (WTSF) based in Gilford, New Hampshire.”
“WEATHERTIGHT SPRAY FOAM, LLC has sponsored the creation of one or more 401k plans.”
Brad and his guys were wonderful!! They came out did the inspection, sent us a price quote and were here in days. The installation crew were super clean, very respectful and for the noise of the install (which was minimal) you would not even know they were here cleaned up after with no signs they were here other than the warmth. No smell at all. Highly recommend them! !!!
Great company, HIGHLY recommend!
I had them come in as an additional quote/consult on my retrofit initially because instead of putting several layers of batting up into my attic again, I just wanted it spray foamed. WeatherTight Spray Foam, and Brad specifically, are extremely knowledgable in their field. Rather than just giving me the standard pitch, Brad provided a well-thought-out solution, demonstrated real expertise, and suggested a superior approach. They took quite a good amount of time to go over everything with me and sat there in my attic with me explaining everything. I'm normally very selective and cautious with who I hire. Brad is a straight shooter and great guy once you get to know him, he's not gonna make any promises he can't keep. They did a great job, more than I could ask for, and sprayed extra! They went SUPER thick on the walls, I thought he'd only go to the studs, they went well past it. They were more than punctual and everyone that came was extremely friendly. My attic is like a giant foam cooler now. 😂 It's been 90F+ outside and I can keep the windows open, it's nuts. I can't wait until this winter when I can use 1 piece of wood to heat my whole house for a day (I'm exaggerating a bit). I wasn't sure on funding/timing, and he was extremely flexible, has great communication, if you reciprocate! They are in high demand and are really are booked out. Even though other clients didn’t respond or follow through on their appointments, he stayed organized and so he was able to accommodate me earlier than expected, showing professionalism and reliability. They brought everything to the job, they brought the whole lab with all this tech and gizmos. They didn't even use my electricity! Spray foam isn't cheap and it's a pain in the ass to DIY. When his guys came, they didn't screw around, they get it done and fast and they are professional. We did the whole thing word of mouth, Brad and WTSF is a company you CAN trust. How rare is that to find in 2025. Brad was right there with his team fully suited up doing the work and making sure it got done right! Not just some sales guy that doesn't do anything! We didn't even have to make crazy contracts or lock into some sketchy randomly emailed sales agreement like this other company tried to do with me! You should ignore that other HVAC company guys 1 star review. Obviously the guy didn't even hire them, so that shouldn't even be there. I ignored an HVAC guy myself and DIY'd my AC. They're not always right.
Great company. Brad recently did my house and was very meticulous about every detail, even around windows. Easy to work with and great in every way. Highly recommend.
Dave and Sean did a great job spraying my subfloor at a great price compared to larger companies in my area.
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1 change recorded — last scanned Sep 8, 2026.
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
