Top-rated spray foam insulation pros.

Get matched with top spray foam insulation pros in Alton Bay, NH

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Spray foam insulation pros in Alton Bay

Avatar for Weathertight Spray Foam, LLC
Weathertight Spray Foam, LLC
5.0(
45
)

Serving Alton Bay, NH and surrounding areas

Angi Approved

In business since 2011

Free estimates

Emergency services offered

"Dave and Sean did an amazing job on my garage. Good price, quick turn-around, incredibly thorough in the application, and full cleanup. Very happy to have used them and definitely recommend!"
bathroom
1
bathroom
2
kitchen

+39

Response time1 day
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for N.E.E. Construction & Spray Foam
N.E.E. Construction & Spray Foam
4.7(
37
)

Serving Alton Bay, NH and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"Working with N.E.E. Construction & Spray Foam on our project to build a ramp in our garage for easier access was a breeze! We posted a request on Angi’s for pros to build a ramp and Warren from N.E.E. Construction & Spray Foam was quick to respond. Within 1 week of our post we had exactly what we needed. Communication is very important to us throughout any project we do and Warren & his crew (Matt and Patrick) did not disappoint. They delivered what we wanted within the timeframe they promised and at the price they committed to when quoting the job. And the quality … fantastic! Take a look for yourself. Thank you Warren, Matt and Patrick from N.E.E. Construction & Spray Foam for restoring freedom and independence to our family."
Sub-Floor Basement
Basement Sub-Floor & Rim Joist
Rim Joist & Sub-Floor
Blown Insulation
Deck Build

+12

Response time2 days
33 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for ABI LLC
ABI LLC
5.0(
3
)

Serving Alton Bay, NH and surrounding areas

Angi Approved

In business since 2025

Free estimates

Credit card accepted

"I could not have been more pleased by the work and the professionalism and the cost and the results. ABI was the first company to respond to my request for bids on the project. They were at the house within days of the request and were knowledgeable about putting insulation over light fixtures embedded in the ceiling. The attic did not have access from within or outside the house and they problem-solved this in a way that was a great solution. They lay down mats so as not to dirty up the carpets and stairs and they wore gear to protect themselves from the insulation. MY house was cleaner when they left than when they arrived. All of the people working on the project were professional and knowledgeable and the cost was extremely reasonable. For the first time this winter, my house feels like it can hold the heat. Looking forward to this summer, because I'm betting it will also improve my air conditioning!"
Response time12 hrs
32 neighbors recently requested a quote
Sonart Construction Corp.
2.7(
3
)

Serving Alton Bay, NH and surrounding areas

Angi Approved

In business since 2013

Free estimates

Credit card accepted

"I recently had my shingle roof replaced and I?m very happy with the results. The team was professional, punctual, and completed the job efficiently. The quality of the work is excellent, and the new roof looks great. They kept the work area clean and communicated well throughout the process. I would definitely recommend them to anyone needing a roof replacement."
Avatar for JP Pest Services
JP Pest Services
4.8(
161
)

Serving Alton Bay, NH and surrounding areas

In business since 1925

Free estimates

Warranties offered

"DON?T ever hire this company. They came and put six mice bait boxes in my house, tracked in mud and snow on my floors and carpeting. Also the technician was taking my bait stations I had previously put down and putting them into her box. Complete THEFT!!! No exclusions done. Please do not hire this company. It cost me $282 for that work. Totally ridiculous The site ANGI gives them rave reviews. How did that happen? "
Recommended by95%of homeowners
Avatar for Outside In Construction
Outside In Construction
4.6(
37
)

Serving Alton Bay, NH and surrounding areas

In business since 1997

Free estimates

Warranties offered

"We consider owner, Jesse Lindland to be customer-oriented, very competent, to have excellent communication skills and most importantly is extremely responsive. OIC provides excellent quality, value and service to any home project and I can highly recommend them!"
Recommended by83%of homeowners
WET BASEMENT SOLUTIONS LLC
4.9(
9
)

Serving Alton Bay, NH and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Wet Basement Solutions sealed the walls of our basement and installed a sump pump about three years ago. As of today, 5/2/23, our area has experienced a great deal of rain, which would have caused our basement to flood in previous years. Since WBS did their work for us, our basement has remained perfectly dry. My husband and I have been singing their praises for the last few days!"
Recommended by100%of homeowners
Avatar for Strogen's Service Experts
Strogen's Service Experts
4.3(
28
)

Serving Alton Bay, NH and surrounding areas

In business since 1976

Free estimates

Emergency services offered

"I am not happy with the advantage plan because this is the second time I needed service on my furnace in the dead of winter and they don?t honor the plan by getting a pro out here to fix it right away but instead they make me wait 1-2 days before they send a pro. That?s leaving me with no heat and dealing with the outcome of frozen pipes. An added expenses to be monthly budget. They said there are other clients with emergency heating problems so that means my heating problems isn?t an emergency. In addition they said they don?t have enough pro to service me. I don?t feel value as a client with them. I feel like my heating issues don?t matter to them as much as someone else. In addition I live in a 55 plus community so why is my heating issue not considered an emergency too. The installation went smoothly and they resolved any issues that arise during installation. I thought I went with a good company that care of their customers but I am definitely second guessing that. "
Recommended by82%of homeowners
...
Showing 1-10 of 54
FAQs for spray foam insulation projects in Alton Bay, NH

Local and federal rebates are available for insulation installation, which can significantly reduce your overall costs. Many utility companies offer incentives or rebates to homeowners who improve their home's energy efficiency. Contact your local energy provider or government agencies to learn about available programs in your area, and consult with a professional insulation installer to maximize your savings.

It's not necessary to remove old insulation before adding new insulation, as long as the existing insulation is in good condition—dry, free of mold, and not damaged. Adding new insulation on top of old insulation can improve your home's energy efficiency by increasing the overall R-value. However, if the old insulation is wet, moldy, or damaged, it's best to remove it before installing new insulation to prevent potential health risks and ensure optimal performance.

Insulating a house takes between five and twelve hours for batts or boards, and two to five hours for spray foam or blown-in insulation. The exact time depends on the size of your home, the type of insulation, and the accessibility of the areas being insulated. Keep in mind that projects may take longer if old insulation needs removal, if there's a larger square footage, or if spaces are difficult to reach.