--- title: "Sealed Tight Foam Insulation L.L.C." description: "Sealed Tight Foam Insulation does spray foam insulation, and it holds 4.9 stars from 23 ratings on both HomeAdvisor and Angi. In a 2023 review, a customer " doc_version: "2026-10-19" last_updated: "2026-10-19" --- # Sealed Tight Foam Insulation L.L.C. **Trade:** Insulation & Weatherization · **Address:** Milton, NH · **Phone:** (603) 923-0651 · **Languages:** English **Rating: 2.9/5** (medium confidence) — from 23 reviews across 3 sources. 100% of sentiment-scored reviews read net-positive. Last 6 months: 0 reviews, 0 negative. ## The honest read Sealed Tight Foam Insulation does spray foam insulation, and it holds 4.9 stars from 23 ratings on both HomeAdvisor and Angi. In a 2023 review, a customer said Justin arrived at the agreed time, applied spray foam insulation and a white spray-on sealer, and cleaned up the whole work space. A 2022 customer said the company insulated their whole first floor and cleaned up when done. A 2022 customer said Justin took on a smaller project that larger spray foam companies would not, at an affordable quote. A 2021 customer said Justin and his assistant scraped all the joists and wall framing for overspray. In a 2021 review, a customer said Justin and his assistant brought their own generator power, then texted when the job was done, cleaned up and locked up. A 2020 customer said Justin and Eric insulated the basement walls and the house sill around the perimeter. A 2020 customer said Justin insulated a crawl space basement and worked around their schedule. In a 2020 review, a customer said Justin cleaned up old insulation that was on the floor of the crawl space he spray foamed. **Strengths:** - Small jobs taken — a 2022 customer said larger spray foam firms declined theirs - Overspray cleanup — a 2021 customer said joists and framing were scraped - Basement wall insulation — a 2020 customer said walls and sill were insulated ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - 4.9 stars from 23 ratings on HomeAdvisor and on Angi _(confidence: high)_ - [HomeAdvisor](https://www.homeadvisor.com/rated.SealedTightFoam.134067510.html) — “HomeAdvisor: 4.9★ from 23 ratings” - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Angi: 4.9★ from 23 ratings” - A 2023 customer said Justin applied spray foam insulation and a white spray-on sealer _(confidence: high)_ - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Justin arrived on the time we agreed and did a fantastic job applying spray foam insulation and a white spray on sealer to complete the job,…” - A 2020 customer said Justin and Eric insulated basement walls and the house sill _(confidence: high)_ - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Justin and Eric were professional and courteous in their knowledge, experience and method. Application and cleanup was excellent. They insul…” - A 2022 customer said Justin took on a smaller project larger spray foam companies would not _(confidence: medium)_ - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Justin was very professional and able to accommodate a smaller project that the other larger spray foam companies would not. The quote was a…” - A 2021 customer said the joists and wall framing were scraped for overspray _(confidence: medium)_ - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Justin and his assistant were on time, professional and did a great job cleaning up! So important to leave a property in good condition once…” - Specializes in Insulation & Weatherization _(confidence: high)_ - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Justin arrived on the time we agreed and did a fantastic job applying spray foam insulation and a white spray on sealer to complete the job,…” - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Justin and Eric were professional and courteous in their knowledge, experience and method. Application and cleanup was excellent. They insul…” - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm) — “Services offered (Angi): Spray Foam Insulation, Spray Foam Insulation - InstallAboutPhotosReviewsMoreAbout” ## License NH doesn't license or register this trade, so there's no state registry to check. That's true of every business in this trade, not specific to this one. ## Sources - [Reddit](https://www.reddit.com/r/Albany/comments/tq9iy2/spray_foam_insulation_contractors_in_the_area/): 0 community mentions discussing this business - [HomeAdvisor](https://www.homeadvisor.com/rated.SealedTightFoam.134067510.html): 4.9★ from 23 ratings - [Angi](https://www.angi.com/companylist/us/nh/milton/sealed-tight-foam-insulation-llc-reviews-1.htm): 4.9★ from 23 ratings ## Recent reviews - **Angi · Grant B. · 2023-10-01**: Good service - **Angi · Ron D. · 2023-09-01**: Justin arrived on the time we agreed and did a fantastic job applying spray foam insulation and a white spray on sealer to complete the job, He cleaned up every inch of the work space, leaving it a lean as he found it. His work is the best, he's professional, hardworking, and is every bit as good as… - **Angi · Susan M. · 2022-08-01**: They were reasonably priced, did a nice job insulating our whole first floor and cleaned up nicely when done. Very responsive and timy in completing the job. - **Angi · Matthew T. · 2022-08-01**: Justin was very professional and able to accommodate a smaller project that the other larger spray foam companies would not. The quote was affordable, the project was completed timely, and the work was done very clean. Would highly recommend. - **Angi · Jennifer E. · 2022-07-01**: Great communication, arrived on time, friendly and professional. Highly recommend! - **Angi · MG D. · 2021-08-01**: Justin and his assistant were on time, professional and did a great job cleaning up! So important to leave a property in good condition once a contractor leaves and They did exactly that! They also scraped all the joists and wall framing for over spray, something that we heard wasn’t done by other c… - **Angi · David H. · 2021-07-01**: Justin was very responsive in getting me an estimate and in completing the work. - **Angi · Denise M. · 2021-02-01**: I was provided a written quote for my request for insulation very quickly. Justin and his assistant arrived on time, politely and professionally responded to my concerns, and completed the job quickly. They even provided their own generator power. They texted me once the job was done, cleaned up, an… - **Angi · Ronald P. · 2020-12-01**: Justin was prompt with his response to my inquiry. We hired him and scheduled the job which is already completed. He showed up when he said completed the job as expected and best of all cleaned up so when he left you couldnâ t even tell he was here. We are more than satisfied and will hire him again… - **Angi · Maryann W. · 2020-11-01**: Found Justin to be Very honest, extremely neat, & pleasant to deal with. Willing to work around my schedule. Returned my calls right away & Completed in a timely manner. Anxious to see if my heating bills are lower now. Fair price for lots of work. --- Data freshness: last scanned 2026-10-18T04:12:01.117Z. Cite as: Sealed Tight Foam Insulation L.L.C. — Tavlee (https://tavlee.com/contractor/sealed-tight-foam-insulation-l-l-c-milton) Source: https://tavlee.com/contractor/sealed-tight-foam-insulation-l-l-c-milton ## Sitemap [Full site index](https://tavlee.com/sitemap.md)