Blown In Insulation
Blown in insulation, the fast way to a warm house
Loose fill goes where batts cannot: around wires, pipes, ducts and odd framing. Our machines put it in dense and even.
Cellulose vs fiberglass
Two materials, one honest recommendation
Blown cellulose is recycled paper treated with borate. It carries about R-3.5 per inch, fills gaps tightly and slows air movement. Blown fiberglass is lighter, does not absorb water, and runs closer to R-2.5 per inch, so it takes more depth to hit the same number. In most attics we recommend cellulose. Over a bathroom with a history of moisture, or where weight on an old ceiling matters, fiberglass can be the better call. Either way the quote states the material, the depth and the R-value.
Most Portland attics we open up sit between R-11 and R-19. Code for a new attic is R-49. That gap is where the heating bill goes.
Get a price
Get a written blown in insulation price
Give us the address and a phone number. We will call to set up the inspection.
From the field
What it looks like when we do it
How it works
Four steps from call to warm
Call or send the form
Tell us the city, the age of the house and what you have noticed. We will tell you on the phone whether it is worth a visit.
We measure, not guess
We get in the attic or crawl space, check the depth, the air leaks, the venting and the wiring, and photograph it for you.
One written price
Square footage, R-value, materials, air sealing and the rebate you qualify for, all on one page. Good for 30 days.
Install and clean up
Most attics are done in a day. We lay drop cloths, blow it in, bring you up to see the depth markers, and leave the house cleaner than we found it.
Is blown in cellulose safe?
Yes. It is treated with borate, which makes it fire resistant and unattractive to pests. It has been the standard attic material in the Northwest for decades.
How deep is R-49?
Roughly 14 inches of cellulose or 18 to 20 inches of blown fiberglass, depending on the product. We install to the manufacturer chart and mark the depth.
Does it settle?
Cellulose settles slightly in the first year, which is why we install to a settled depth, not an initial depth. The R-value on your quote is the number after settling.
Can you blow it into walls?
Yes, through small holes drilled from the outside or inside, then patched. See our wall insulation page for how dense pack works.
Related
Other services
Attic Insulation
Blown in cellulose or fiberglass to R-49 and up, with the air sealing that makes it work.
Learn moreCrawl Space Insulation
Floor insulation, vapor barrier and rim joist sealing for the wet Willamette Valley.
Learn moreWall Insulation
Drill and fill dense pack for older Portland homes with empty walls.
Learn moreSpray Foam Insulation
Closed and open cell foam for rim joists, vaulted ceilings, shops and additions.
Learn more
Request a quote
Get a straight answer on your attic.
Tell us about the house and we will come out, measure, and give you one written price. Rebates included, no surprises on install day.