Eco Foam Hawaii Logo
Green pasture under a cloudy sky on Hawaii Island

Big Island Spray Foam Insulation

Hawaii Island has more climates than anywhere else in the state, from the dry lava fields of Kona to the rain of Hilo and the chilly nights of Volcano and Waimea. Eco Foam Hawaii helps Big Island homeowners and builders pick the right spray foam for the exact spot they live.

REQUEST A QUOTE Call (808) 466-1326
  • License CT-37349
  • Locally owned on Maui
Rainy, green east side of Hawaii Island

Hilo and Puna: built for rain

Hilo is one of the wettest cities in the country, and Puna subdivisions like Hawaiian Paradise Park and Leilani are not far behind. Homes on the east side are often on post and pier foundations with open undersides, and many have catchment systems and off grid power. Closed cell foam under the floor and on the roof deck keeps damp air out, helps stop mildew, and holds its performance in constant humidity. For off grid homes, a tighter house also means a smaller solar and battery system.

Bright interior ceiling of a Kona home

Kona and Kohala: keep the heat out

The west side is sunny and dry, and homes in Kailua Kona, Waikoloa and along the Kohala coast run AC hard. Roofs get very hot, and that heat moves straight down into the living space. Sealing the roof deck with spray foam keeps the attic close to indoor temperature, so cooling systems run less and rooms stay comfortable. It also blocks fine volcanic dust and vog from leaking in through ceiling gaps.

Insulated white walls and ceiling in an upcountry home

Volcano, Waimea and upcountry: hold the warmth

At higher elevations in Volcano, Waimea, Holualoa and Ocean View, nights can be cold enough for a wood stove. Many of these homes were built without insulation because nobody expected Hawaii to feel chilly. Spray foam in the walls and roof keeps heat inside, cuts drafts, and stops the dampness that comes with cool, misty weather. Same foam, different goal than Kona.

Our Big Island services

Post and pier floors

Seals open undersides common on the east side.

Off grid homes

A tighter house needs less solar and battery.

Roof decks

Keeps Kona sun and Hilo moisture out of the attic.

Upcountry walls

Holds heat in Volcano and Waimea homes.

New construction

Coordinated with builders across the island.

Barns, shops and ag buildings

Control heat and condensation in metal buildings.

Big Island areas we serve

Hilo

Wet east side homes that need moisture control.

Puna and Pahoa

Post and pier and off grid homes in the rain.

Kailua Kona

Hot, dry west side homes and condos.

Waikoloa

Sunny resort area homes that rely on AC.

Waimea

Cool, windy ranch country homes.

Volcano

Cold, misty nights at high elevation.

Holualoa

Coffee country homes on the cooler slopes.

Ocean View

Rural homes on the southern slopes of Mauna Loa.

Honokaa

Hamakua coast homes with rain and wind.

Hawi and Kapaau

North Kohala homes facing strong trade winds.

Big Island spray foam questions

Which foam is best for a Hilo or Puna home?

Usually closed cell, especially under raised floors and on roof decks, because it resists moisture and acts as a vapor barrier.

Does insulation matter in Kona if I have AC?

Yes. Without a sealed roof, your AC is cooling against a very hot attic. Insulating the roof deck lets the system run less and keeps rooms more even.

Can spray foam help an off grid home?

A tighter, insulated house needs less energy to stay comfortable, which can reduce the size of the solar and battery system you need or stretch the one you have.

Do you cover the whole island?

Yes, from Hilo to Kona and up to Waimea and Volcano. Let us know your area when you request a quote so we can plan travel.

Get a Big Island spray foam quote

Tell us about your project and we will follow up with a free quote.

REQUEST A QUOTE Call (808) 466-1326
  • License CT-37349
  • Locally owned on Maui