CRAWL SPACE & FLOORS · SPOKANE
Crawl Space and Floor Insulation in Spokane & North Idaho
Cold floors in winter often mean there is too little insulation under them. We insulate the floor over your crawl space to R-38, with our own crew, and we look at it for free first. Call (509) 200-7677 or send us a note.
- WA Lic. THERMIL757RN · Licensed, bonded & insured
- Mon–Fri 8–5 · We answer our own phone
- Insulating Spokane houses since 2017
- Our own crew of two or three · No subs
Is the floor the problem?
A cold floor over an uninsulated crawl space is one of the most common complaints we get in Spokane. If you walk across a room in socks in January and the floor bites back, the floor is where we start.
Signs it is worth a look
- The floors are cold in winter, even when the heat is on.
- The house was built before about 2010. Most houses here built before then are well short of what this area needs.
- You have never looked under the house, or you looked once and could not tell what was there.
Not sure? Call us. We will come out and look under the house, and tell you what we see.
What we put under the floor
We install fiberglass batts under the floor, over the crawl space, to R-38. Batts are the right tool when the framing is open, and under a floor it is open. We fit every batt around pipes, wiring and joist edges, with no gaps and no compressed corners. This is underfloor insulation done properly. The insulation under the floor sits tight against the floor above, not hanging loose.
Floor over a crawl space
Fiberglass batts under the floor, so the rooms above are not sitting on cold air.
This is the R-value we use for Eastern Washington and North Idaho, not a number picked to look good on a flyer.
How it goes
Free on-site look, in a day or two.
We get under the house ourselves and quote the actual job, not a guess over the phone.
We seal gaps and penetrations first,
before any insulation goes in.
We install the batts to R-38.
We clean up and take everything with us.
The crew that quotes the job is the crew that does it. Two or three of us, no subcontractors.
What we do not do
We would rather say it now than waste your afternoon. We do not do spray foam. We do not do duct work, and if you ask we will point you to someone who does it properly. We do not do asbestos or vermiculite, which needs a licensed abatement contractor. We will give you a name, and insulate once it is out. We work on houses, not commercial buildings, pole barns or metal buildings.
Attic or floor first?
For most existing homes the biggest win is the attic. If your attic insulation is old, thin or dirty, that is usually where the heat is leaving, and we blow it to R-60. The floor is the next job, and it is the one that fixes the cold feet. When we come out for the free look we check both and tell you which comes first for your house. Some houses need only one.
Old insulation in the attic? See attic insulation removal and replacement.
Crawl space insulation in Coeur d’Alene, Post Falls and Hayden
We cover Coeur d’Alene, Post Falls and Hayden the same as Spokane, with no trip charge. It is about half an hour from our shop in Spokane Valley. The free look and the work are the same on the Idaho side.
Licensed, bonded and insured
Therma-Lock Insulation LLC. WA Lic. THERMIL757RN. Licensed, bonded and insured. Our shop is at 14404 E Bow Ave, Spokane Valley, WA 99016.
Crawl space insulation, answered
What R-value do you put under a floor?
R-38. That is the value we use for the floor over a crawl space in Eastern Washington and North Idaho. Walls are R-21 with batts. Attics are R-60.
Why is my floor cold?
Often there is too little insulation under it. A cold floor over an uninsulated crawl space is one of the most common complaints we get in Spokane. On the free look we get under the house and tell you what is there.
Do you insulate crawl spaces in Coeur d’Alene?
Yes. Coeur d’Alene, Post Falls and Hayden are inside our normal area, with no trip charge. The estimate is free.
Should I do the attic or the floor first?
For most existing homes the attic is the biggest win. We check both on the free look and tell you which comes first. Some houses need only one.
Do you use spray foam or do duct work?
No. We do not do spray foam or duct work. We install fiberglass batts under the floor to R-38.
Is the estimate free?
Yes. The on-site estimate is free, whether you go ahead or not. We get under the house and quote the actual job.
Get a free estimate
Tell us the address and what you are seeing, like cold floors. We usually get back to you within the hour. Or call (509) 200-7677, Monday to Friday, 8 to 5.Goes straight to our phones and email. We don’t sell it or put you on a marketing list. Privacy policy