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TRUSTED BY FRANKLIN, NH HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon25
    Verified insulation services reviews

Find Insulation pros in Franklin

Avatar for Weathertight Spray Foam, LLC
Weathertight Spray Foam, LLC
4.7(
51
)

Serving Franklin, NH and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"The team that came did an excellent job. Cleaned up after they were done, were very enthusiastic. Brad and Kim brought an excellent team. They explained the job and how it was going to be done and how spray foam is used. As well as the benefits of saving on heat and Air conditioning."
bathroom
1
bathroom
2
kitchen

+39

Response time1 day
Recommended by97%of homeowners
Avatar for AJ Pro Green Insulation Corp
AJ Pro Green Insulation Corp
4.9(
7
)

Serving Franklin, NH and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"We were referred to AJ Pro Green by a colleague so we had them come out for a free estimate. They showed up on time and were very professional. They insulated our basement during our remodel and we couldnâ t be happier. The job was done quickly, was within our budget, and communication was fantastic. We would highly recommended!"
Roof open cell - walls closed cell
Roof open cell - walls closed cell
Roof/Attic closed cell
Spray Foam Insulation
Spray Foam Insulation

+57

Response time2 hrs
Recommended by100%of homeowners
Avatar for On Task Construction LLC
On Task Construction LLC
5.0(
9
)

Serving Franklin, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.\n\nTrip charge $100 will be taken off the contracted amount once agreement is signed.

Spray foam
Spray foam
Spray foam
Deck build
Deck build

+4

2 neighbors recently requested a quote
Recommended by33%of homeowners
Sonart Construction Corp.
2.3(
7
)

Serving Franklin, NH and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

Avatar for BA Gordon Insulation
BA Gordon Insulation
4.6(
40
)

Serving Franklin, NH and surrounding areas

In business since 2004

Free estimates

Small jobs welcome

"A very thorough and complete job was performed in insulating my attic space. Brian was very communicative and professional throughout the whole process. I highly recommend him to anyone in need of insulation services. Thanks again."
Our Work
Our Work
Our Work
Our Work
Our Work

+2

Response time1 day
Recommended by100%of homeowners
SAV-ON INSULATION
4.5(
6
)

Serving Franklin, NH and surrounding areas

In business since 1969

Emergency services offered

"I was plagued with recurring ice dams in a few areas of my roof. After investigation, it was discovered that the insulation in a few visible areas was sub-par. Roland came in and quickly spotted the problem areas. He assured me that the could fix these problems immediately. He used a combination of rearranging existing batts, blown-in fiberglass and spray foam to seal the attic space, over the course of two visits. He's extremely personable and always called me back or answered the phone right away."
Additional Photos
Additional Photos
Additional Photos
Recommended by100%of homeowners
Avatar for USA Insulation of SNH
USA Insulation of SNH
4.2(
45
)

Serving Franklin, NH and surrounding areas

In business since 1985

Free estimates

Small jobs welcome

"Great service! Professional, prompt and polite. They were able to come quickly and blow insulation into the attic. I would definitely hire them again for my insulation needs. Thank you!"
USA Insulation
USA Insulation
USA Insulation
USA Insulation
USA Insulation

+10

Response time10 mins
Response rate100%
Recommended by89%of homeowners
Showing 1-10 of 41
Insulation questions, answered by experts

Expect your home insulation project to take between five and 12 hours to complete on average for batts or boards and two to five hours for spray foam or blown-in insulation. It might take longer if you need to remove your home’s existing insulation, you have a higher-than-average square footage, or accessibility is limited.

Mineral wool has an excellent life expectancy of up to 50 years, provided it's kept dry and free of pests. Compared to fiberglass, with a life span of 20 to 30 years, mineral wool stacks up well for long-term cost savings. Sheep wool maintains a similar life span to fiberglass, while estimates for hemp wool insulation life expectancies are all over the board, ranging anywhere from 20 to 100 years.

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

A radiant barrier is a form of insulation topped with a reflective material designed to keep homes cool during hotter months. It is generally considered worth the investment if you live in a hot, sunny climate, as the cost can be recouped over time through lower energy bills. Installation costs typically range from $0.10 to $1 per square foot. After installation, homeowners in warm climates may save between $7 and $15 per month, potentially reducing their electric bill by 5% to 10%. The exact savings will vary depending on your location and the type of barrier chosen.

The Franklin, NH homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.