Named for an 1859 sawmill, home to two creeks

Insulation Contractors in Cedar Mill, OR

Drier crawl spaces, warmer floors and attics built up properly, for homes owners plan to keep.

Free on-site estimates with an attic and crawl space check
Written, itemized quotes listing R-value, depth and square footage
Air sealing and ventilation checked before insulation goes in

Start Below the Floor in Cedar Mill

Insulation contractors in Cedar Mill spend a lot of time underneath houses. Two creeks run through the area, the ground stays damp through the rainy months, and a crawl space that collects moisture can soak or sag the insulation under your floor. We start most Cedar Mill visits with a flashlight and a look under the house, then work our way up to the attic.

Water shapes the neighborhood

Cedar Mill Creek starts in the Forest Heights neighborhood across the county line, flows through Cedar Mill and joins Beaverton Creek in Tualatin Hills Nature Park. Johnson Creek runs through the area too, and the community even has its own waterfall, Cedar Mill Falls, about 32 feet high. All that water is part of the area's appeal. It also means that homes on lower ground or near drainages need a crawl space that stays dry.

What a wet crawl space does to insulation

Fiberglass batts between floor joists are meant to hold still and stay dry. In a damp crawl space they absorb moisture, lose much of their insulating value, sag away from the subfloor and sometimes fall out entirely. Wet insulation also gives mold a place to grow and attracts rodents looking for nesting material. The result upstairs is cold floors, a musty smell and sometimes higher heating bills.

How we approach it

Inspect the ground cover, vents, foundation walls and existing insulation
Pull out wet, fallen or rodent-soiled material and bag it out of the crawl space
Lay or replace a heavy ground vapor barrier, lapped and sealed at the seams
Reinstall insulation tight to the subfloor, or insulate the rim joist with spray foam
Note any drainage or plumbing problems you should handle before insulation goes back in

If water is actively pooling, insulation is not the first fix. We will tell you that plainly and suggest you deal with the drainage before we insulate.

Then the attic

Once the floor is handled, the attic is usually the next best place to spend money. We measure existing depth, seal the gaps around light fixtures, plumbing stacks and top plates, and add blown-in insulation to a consistent level. Where an older attic has dirty or rodent-damaged material, removal and replacement often makes more sense than piling new insulation on top.

Homes people keep

Cedar Mill has one of the higher ownership rates in the area: about 77.1% of homes are owner-occupied, and 86.1% of residents lived in the same house a year earlier. Census figures put the median owner-occupied value at $878,300. Homes with that kind of value, owned for that long, are worth doing right. We give you a written scope with photos so you can see what we found and plan work in stages if you prefer.

Our Cedar Mill services

Attic insulation, spray foam, blown-in insulation, crawl space insulation and vapor barriers, wall insulation and full removal and replacement. Cedar Mill is unincorporated Washington County, so any permits run through the county. Call (971) 458-8258 to set up a visit.

Call (971) 458-8258

Cedar Mill Facts Homeowners Can Use

Two creeks and a waterfall. Cedar Mill Creek flows through the community and joins Beaverton Creek in Tualatin Hills Nature Park. Johnson Creek also crosses the area, and Cedar Mill Falls, about 32 feet high, is its only waterfall.
High ownership. About 77.1% of Cedar Mill homes are owner-occupied, the median owner-occupied value is $878,300, and 86.1% of residents lived in the same house one year earlier (Census ACS, 2020 to 2024).
Named for redcedar. John Halsey Jones and his father Justus established the sawmill in 1859. It cut Western redcedar, once the dominant tree here, and gave the community its name before closing in 1891.
Unincorporated, county-served. Cedar Mill is an unincorporated census-designated place in Washington County with 6,388 housing units in the 2020 census. Tualatin Valley Fire and Rescue provides fire and EMS service.

Our Services in Cedar Mill, OR

Cedar Mill Questions

My Cedar Mill house is near the creek. Should I worry about the crawl space?

It is worth a look. Homes near Cedar Mill Creek, Johnson Creek or other drainages can see more ground moisture in winter. We check the vapor barrier, vents and insulation and tell you whether the space is dry enough to insulate or needs a drainage fix first.

Why are my floors cold even though the furnace runs fine?

Cold floors usually point to the crawl space: insulation that has fallen away from the subfloor, gaps at the rim joist, or no insulation at all. Re-securing or replacing it and sealing the rim often makes the biggest difference you can feel.

Can you remove insulation rodents have nested in?

Yes. We remove contaminated insulation from the crawl space or attic, bag it out and install clean material. We recommend sealing entry points first so the problem does not come back; we will point out openings we see.

Who issues permits in Cedar Mill?

Cedar Mill is unincorporated, so Washington County handles permits rather than a city. Routine insulation replacement is usually simple; if the work is part of a larger remodel we will tell you what the county may require.

Free Estimates in Cedar Mill, OR

Crawl space and attic estimates in Cedar Mill, free and in writing.

Call (971) 458-8258 Free Estimate