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Platted in 1850, incorporated in 1872

Insulation Contractors in Forest Grove, OR

Insulating some of the oldest houses in Washington County, plus the rentals near campus, with nearly 47 inches of rain a year in mind.

  • 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

Old Houses, Wet Winters

Hiring insulation contractors in Forest Grove often means dealing with history. The town was platted in 1850 and incorporated in 1872, and the Clark Historic District covers 18 blocks of homes dating back to 1854, several dozen of them from before 1900. Houses that old were built long before anyone thought about insulation, so they usually need a careful, room-by-room plan rather than a standard attic job.

Rain is the main design factor

Forest Grove averages 46.72 inches of precipitation a year over about 146 wet days, based on 1991 to 2020 NOAA normals. Snow is light, about 2.7 inches a year, but cold can be serious: the city's record low is -12°F. That mix means the biggest risk to insulation here is moisture, with an occasional hard freeze. We check attic ventilation, roof leaks and crawl space dampness before we install anything, because insulation that gets wet stops doing its job.

Working on historic houses

Old houses have their own rules. Here is how we approach them:

  • Walls: Many pre-1900 and early 1900s homes have empty wall cavities. We can blow insulation in through small holes and patch them, but first we check for old wiring and for blocking inside the walls that stops fill from reaching every cavity.
  • Attics: Old attics may hold a thin layer of loose-fill. If it looks like vermiculite, we recommend testing before it is disturbed.
  • Air leaks: Gaps around chimneys, old windows and balloon-frame walls let warm air rise straight into the attic. Sealing these is often the best value in an older home.
  • Moisture: Old houses were drafty, and that dried them out. When we tighten them up, we make sure bath fans and ventilation can still remove moisture.

If you own a rental near campus

Forest Grove is home to Pacific University, which began as Tualatin Academy, and the town has a large rental market. The 2020 Census found 40.5% of occupied homes were renter-occupied. For landlords, crawl space and attic insulation can make units easier to heat and help protect pipes during cold snaps. We can schedule work between tenants or during breaks and give you a written record of what was installed in each unit.

Newer homes on the edge of town

The city's population rose from 21,083 in 2010 to 26,225 in 2020, so plenty of homes are recent. For those, the job is usually smaller: topping up settled attic insulation, fixing gaps around the attic hatch, or insulating a garage ceiling under a living space.

Insulation services in Forest Grove

  • Wall insulation for historic and older homes
  • Attic insulation and air sealing
  • Blown-in insulation
  • Spray foam insulation for rim joists and tight spaces
  • Crawl space insulation and vapor barriers
  • Insulation removal and replacement after rodents, leaks or smoke

Call (971) 458-8258 or use

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. Forest Grove is at the west end of our service area.

Forest Grove Facts for Homeowners

  • Homes from the 1850s. The Clark Historic District covers 18 blocks with homes dating to 1854, including several dozen from before 1900. The city also has the Painter's Woods Historic District and a number of individually listed National Register properties, including Old College Hall.
  • Nearly 47 inches a year. NOAA 1991 to 2020 normals for Forest Grove show 46.72 inches of precipitation a year over 146.1 precipitation days, with about 2.7 inches of snow. The record low is -12°F.
  • A strong rental market. The 2020 Census counted 9,356 housing units, with 59.5% of occupied homes owner-occupied and 40.5% rented. Census estimates for 2020 to 2024 put the owner-occupied rate at 64.1%.
  • An early college town. Pacific University, originally Tualatin Academy, is in Forest Grove. Old College Hall on the campus is listed on the National Register of Historic Places.
Insulation Removal & Replacement in Beaverton, OR

Forest Grove Questions

Does insulating my historic Forest Grove home require special approval?

Interior insulation work usually does not change how a house looks from the street, but any exterior work in a historic district, such as drilling through siding, may be reviewed. Check with the City of Forest Grove planning staff before work begins. We can drill from the inside when that is the better route.

With this much rain, is my crawl space a problem?

It can be. Forest Grove gets about 46.7 inches of precipitation a year, so crawl spaces here can run damp. We check the ground cover, drainage and vents before we insulate the floor, and we will tell you if moisture needs to be fixed first.

Can you insulate a student rental between tenants?

Yes. The turnover between leases is a convenient time for attic and crawl space work. We can also work while tenants are home, since most of the work happens outside the living area.

How far do you travel to Forest Grove?

Forest Grove is part of our regular service area west of Beaverton. Inspections and written quotes are free here, the same as closer in.

Free Estimates in Forest Grove, OR

Free inspections for historic homes and rentals in Forest Grove.

Call Now: (971) 458-8258