Spray foam insulation in Bellingham WA - fewer drafts and a plan you understand
Drafty rooms, a cold floor over the garage or a hot upstairs? We seal and insulate in one step, with the foam you pick.
- The owner looks first I come out myself and show you what I'm seeing.
- Open-cell or closed-cell We explain both in plain terms so you can choose.
- A plan for moving out We help you decide where everyone stays while foam goes in.
- Steps in order Your written plan lists each step and why it comes there.
- Licensed and fully insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
How do you know your house could use spray foam?
Each of these starts small. Catching it early usually means a simpler job, before a draft or a damp spot turns into a cold room or wet framing.
Drafts you can feel
You feel cold air near outlets, baseboards or the attic hatch. Those are usually gaps in the framing, and they pull heat out all winter until they're sealed.
Upstairs stays hot
The upstairs bedrooms stay warm long after the sun goes down. Usually the attic is leaky or thin, and those rooms stay hard to sleep in all summer.
Cold room over the garage
The floor over the garage feels cold through your socks. It usually has gaps or sagging insulation, and the room stays hard to use each winter until it's sealed.
A power bill that keeps climbing
Your power bill keeps rising though nothing about how you live has changed. Air leaking through the attic and walls is a common cause, and it adds up every month.
Ducts running through the attic
Your furnace ducts run through a cold attic, so heated air loses warmth before it reaches the rooms, and that loss repeats every time the heat comes on.
Old insulation that's wet or dirty
You see attic insulation that's flattened, stained or full of droppings. It isn't doing its job anymore, and it has to come out before anything new goes in.
How we do spray foam insulation, in order
Spray foam insulation in Bellingham starts with me looking before anyone sprays anything, because foam sprayed over old insulation that's soaked or full of droppings only seals the problem in, so that comes out first. Then I go over open-cell and closed-cell with you in plain terms so you can pick the one that fits, and we plan where your household will stay while the foam goes in. Our installers spray it with a professional high-pressure system, which closes the gaps around pipes, wiring and the attic hatch while it insulates, and they carry it right out to the edges, where thin coverage usually leaves the coldest spots. The price mostly moves with the foam type, how much area and depth you need and how much prep the space takes, while the schedule turns on that prep and on when everyone can be out of the house, and I'll walk you through how that plays out for your house when I come look.
Foam costs more than other insulation, and it isn't always the right call. In a lot of attics, sealing the gaps and topping up with blown-in insulation, which is loose fill blown through a hose, does the job for less, so I'll tell you when standard attic insulation makes more sense. Foam earns its price when your ductwork lives up in the attic, or in walls and the floor over the garage, where loose fill won't stay put.
What happens after you call us about spray foam?
From your first call to the last walk-through, here's who does what and the order it happens in.
Call, then I come out
Reach us by phone or the form. I come out myself, look at the attic, walls, crawl space or basement, and show you what I'm seeing.
Get a written plan
You get a written plan listing each step in order and why it comes there, along with the foam you picked and where you'll stay.
Our installers spray
Our trained installers spray the foam with a professional rig while your household is away. They work right out to the edges, where gaps usually hide.
Walk through it together
Our crew cleans up, then once you're back inside I walk through the finished job with you and show you what went where.
Why Bellingham homeowners call Thermal Bellingham Insulation Company
The owner comes to look
I come out myself and build the plan with you, so the person explaining your house is the one responsible for it.
Covered while we're working
We're licensed and fully insured, so you're not the one carrying the risk while our crew works in your house.
Based in Bellingham since 2023
I started this business here in 2023 after years running a contractor's schedule, so the order of the work gets planned first.
Ask everything before we start
Our work is backed by our satisfaction guarantee. Call (360) 255-0276 or send us a request with your questions first.
Get a written spray foam plan for your house
Tell us your address, whether it's inside Bellingham city limits if you know, and which spaces you want foamed. We reply within one business day, and I come out for a free on-site estimate with no obligation.
Spray foam work up close
Look through these examples of spray foam in attics, walls and crawl spaces to see how open-cell and closed-cell look once installed.
Spray foam questions we hear
These are the questions Bellingham homeowners ask most before foam goes in. If yours isn't here, call or send a request and I'll answer it for your own house.
Is open-cell or closed-cell spray foam better for my house?
Open-cell usually fits when price and quiet matter most, and closed-cell fits when you want the most insulation in a thin space. In general terms, open-cell costs less and blocks sound much better, while closed-cell costs more and insulates more per inch. Closed-cell is also dense enough to block moisture, so it often goes where dampness is a worry.
How much does spray foam insulation cost in Bellingham?
The cost comes down to which foam you choose, how many square feet we're covering and how thick, and what prep the space needs. Pulling out soaked or dirty old insulation, a tight crawl space or a hard-to-reach room over the garage all add labor, while an open attic with clean framing keeps it down. Once I've seen the space, you'll know which of those apply to you.
How long do you have to stay out of the house after spray foam insulation?
Federal consumer safety guidance says to stay out for at least 24 hours, and it can be longer depending on the product, the type of house and whether children or older people live there. We help you plan where everyone stays before the work is booked. If someone in the house has skin conditions, asthma, respiratory allergies or a past sensitivity to isocyanates, one of the foam's ingredients, go over the product information with us first, because another insulation may suit you better.
Do I need a permit for spray foam insulation in Bellingham?
Possibly, because the city's Permit Center decides by the scope of the job and requires a permit for anything not on its list of work exempt from permits. Many Bellingham addresses actually sit outside city limits in unincorporated areas, so the first step is knowing which office covers your house. Before we schedule, we check with that office and walk you through anything it needs from us or from you. The Permit Center answers at (360) 778-8300 or permits@cob.org, Monday to Friday, 8 AM to 5 PM.
How do I check if a spray foam contractor is licensed in Washington?
Look the business up on the state's Verify tool, which shows whether its contractor registration is active and whether its workers' comp account covering any employees is paid up. Washington requires every construction contractor to register with the state and to be bonded and insured, and the tool also lists safety violations and lawsuits against the contractor's bond.
Can I install spray foam insulation myself with a kit?
Kits are fine for small gaps, but federal guidance says the main insulation job belongs to a trained applicator with a professional high-pressure system. The do-it-yourself kits are mostly meant for sealing holes and gaps, and they still call for the same safety precautions. There's no standard way to remove or fix foam that went on wrong, and disturbing it the wrong way, especially with heat, can create dust or hazardous material, so getting it right the first time matters.
Cities we work in near Bellingham
We're based in Bellingham and work on older, drafty houses across Whatcom and Skagit counties, including Ferndale and Sudden Valley. Pick your city below or call us.
Ask about spray foam for your house
We're open evenings and weekends, so call (360) 255-0276 after work or send the form with the spaces you want foamed.