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Find Spray foam insulation pros in Westport

Avatar for Redwood Insulation
Redwood Insulation
4.9(
16
)

Serving Westport, CA and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

"Matt completed the insulation of my crawl space with spray foam quickly and at a very competitive cost. I highly recommend Redwood Insulation without reservation."
Response time2 days
9 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for JNG Insulation Pros
JNG Insulation Pros
5.0(
12
)

Serving Westport, CA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"They are very professional! Did a wonderful job and my build is already much, much cooler on the hot days. I highly recommend JNG insulation pros! In fact, I have not stopped talking about how much I appreciate them to my friends and family. It is a little more than standard, but consider the savings in cooling and heating. If you can do the full package, you won't be sorry. There is a fume to the product, be prepared, but it does dissipate for the most part in a few days. JNG really is the best!"
SprayFoam Pics
SprayFoam Pics
Batt Insulation Garage
SprayFoam Pics
SprayFoam Pics

+1

Response time2 days
34 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for True core insulation
True core insulation
New to Angi

Serving Westport, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Welcome to True Core Insulation!\n We specialize in maximizing energy efficiency and comfort. \nWe service residential homes, new construction, remodels, and more. \nOur expert services include insulation removals, loose fill blow ins, meticulous air sealing, and so much more. \nNo job is too big or too small for our dedicated team! \nReach out to True Core Insulation today for help with your insulation needs.

6 neighbors recently requested a quote
Avatar for Apperson Energy Management
Apperson Energy Management
4.7(
56
)

Serving Westport, CA and surrounding areas

In business since 1983

Free estimates

Warranties offered

"Sergio the estimator arrived on time was exceptionally thorough. I was only looking for attic insulation, but Sergio asked if I had insulation in my walls. I assumed I did, he checked I did not, as I have an older home. Jon was wonderful answering my questions and calls. Luis and Jose arrived on time they did a fabulous job insulating my attic and walls and were very neat and clean I needed some help clearing some shelves in the garage for wall insulation and Jon sent his son Connor help me. I highly recommend them"
Recommended by100%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Insulation - Install or Upgrade

Serving Westport, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Excellent Service from planning through Execution and installation to final fine tuning. The folks communicated well and explained every detail of the step. Got permit and inspection done. It was seamless. Thanks. R."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+32

Recommended by100%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Insulation - Install or Upgrade

Serving Westport, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Overall, they did a good job. They are friendly and very helpful. we had a little mess to clean up after, but to be fair, I didn't complain -- if i had they would have come back. Preferably they would have come back to check on their own."
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
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FAQs for spray foam insulation projects in Westport, CA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.