Rigid foam board installed tight, sealed, and code-correct
Foam board insulation Milwaukie OR that stops drafts cold
If your Milwaukie home runs cold in January and hot in July, foam board insulation Milwaukie OR is the fix. We cut, fit, and seal rigid foam board insulation in Milwaukie onto basement walls, rim joists, and exterior sheathing so air stops moving and your furnace stops overworking. AirFortify has served Clackamas County since 2021, and we install foam board insulation panels Milwaukie Oregon homeowners keep for decades.
Live phone supportUpfront optionsBacked workmanship
What's included
What our foam board insulation includes
Every foam board job is quoted as a complete scope, not a product drop. Here is what is standard on a Milwaukie install, and what we treat as an add-on if your project needs it.
Moisture and thermal assessment
Before any board goes up, we read the walls with a moisture meter and scan with a thermal imaging camera. You get a clear picture of where the air is leaking and whether the assembly is dry enough to insulate. This step is included on every quote.
Cut, fit, and fasten board
We measure each bay, cut 1-inch to 2-inch XPS or polyiso to fit within an eighth of an inch, and fasten it to the framing or foundation. All cutting happens on site with a utility knife, and we vacuum as we go.
Seam taping and foam sealing
Fitted board alone is not an air barrier. We tape every seam with Frog Tape, seal the perimeter and top plate with Great Stuff canned foam, and close penetrations around wiring and plumbing. This is the step that makes the R-value real.
Vapor barrier detailing
We specify and install the correct vapor barrier for your assembly, whether that is foil-faced board, a separate membrane, or a smart retarder. Getting this wrong traps moisture, so we detail it to the climate and the wall type.
Final thermal verification
Before we pack up, we re-scan the wall with the thermal camera. If a cold stripe shows up, we find the gap and fix it that day. You get a walkthrough of what was installed and the R-value you now have.
Cleanup and haul-away
We sweep, vacuum with an insulation vacuum, and haul off all scraps and packaging. Your basement or job site is left ready to use, not covered in foam dust and offcuts.
Service overview
foam board insulation Milwaukie OR, explained plainly
foam board insulation Milwaukie OR is rigid plastic foam sold in 4x8 sheets, typically 1/2 inch to 2 inches thick, that gets fastened to walls, rim joists, and foundations to block heat transfer and air movement. Unlike fiberglass batts, which slow air but let it pass, foam board is a solid barrier with an R-value of roughly R-4 to R-6.5 per inch depending on whether you choose expanded polystyrene, extruded polystyrene, or polyiso. We cut it with a utility knife, seal seams with Frog Tape and canned foam, and tape joints so the assembly performs as one continuous plane.
Milwaukie sits in a wet, mild-winter climate where the real enemy is moisture, not deep cold. Older homes near Downtown Milwaukie and Ardenwald often have uninsulated rim joists and block foundations that wick damp air straight into living space. That is where mold growth, musty smells, and $300 winter heating bills come from. If you have been searching for rigid foam insulation near me Milwaukie, the answer is usually a 2-inch XPS board on the foundation wall, sealed top and bottom, plus foam board insulation for exterior walls Milwaukie Oregon where sheathing is exposed during a remodel.
How we workWe verify the cause, compare realistic options, and confirm the repair before we leave.
The service timeline
How our foam board install runs
The process flexes to the condition, but these checkpoints keep decisions clear.
Walkthrough and moisture check
We start with a moisture meter and thermal imaging camera on your foundation walls, rim joists, and any suspect corners. You get a straight answer on whether the wall is dry enough to insulate or whether a leak needs fixing first. This takes 30 to 45 minutes.
Measure and plan cuts
We measure every bay with a tape and stud finder, then map the cuts. Foam board has to fit tight, within an eighth of an inch, or the seams leak. We plan around plumbing, wiring, and ductwork so nothing gets crushed or left with a gap.
Cut and fit the board
We score and snap 2-inch XPS or polyiso with a utility knife, fit each piece, and check it against the framing. Technicians wear a respirator mask while cutting, and we run an insulation vacuum as we go so your basement is not left covered in foam dust.
Seal every seam
Fitted board is only half the job. We run Frog Tape on the seams, hit the perimeter with Great Stuff canned foam, and seal the top plate and sill. This is the step that turns a stack of panels into an actual air barrier.
Verify and clean up
We re-scan the wall with the thermal camera to confirm the temperature differential is gone, then sweep and vacuum the work area. You get a walkthrough of what was installed, where, and what R-value you now have. Typical job time is 4 to 7 hours.
Tools & methods
Tools and methods we use
Purpose-built equipment, used by trained technicians, so the job is done accurately the first time.
Thermal imaging camera
We scan walls before and after install to find air leaks and verify the board is actually stopping heat transfer. It is how we prove the job worked instead of assuming it did.
Moisture meter
Every wall gets read before insulation goes up. If the reading says the assembly is wet, we stop and address the water source first. This one tool prevents most mold callbacks.
Utility knife and straight edge
Foam board has to fit within an eighth of an inch to seal properly. We score and snap every sheet on site for a tight fit around framing, plumbing, and wiring.
Spray foam gun
We use a spray foam gun with Great Stuff cans to seal the perimeter, top plate, and penetrations. This closes the gaps that cut board leaves behind.
Insulation vacuum
Cutting foam makes dust and offcuts. We run an insulation vacuum during and after the install so your basement is left clean and ready to use.
Respirator mask
Our technicians wear respirators while cutting and fitting board. Foam dust is not something you want in your lungs, and we do not want it in your house either.
Use cases
When foam board insulation makes sense
These examples show how the service framework adapts rather than forcing every call through one repair.
Oak Grove exterior wall during re-siding
A 1962 ranch in Oak Grove was getting new siding, and the original sheathing was exposed with no exterior insulation. Interior walls were cold to the touch, and street noise carried straight through. → We installed 1-inch foil-faced foam board over the sheathing, taped all seams, and integrated it with new house wrap before the siding went back on. The homeowner reports the front rooms hold heat better and the road noise is noticeably reduced.
Lake Road crawl space, wet batts to sealed board
A Lake Road home had fiberglass batts in the crawl space that had been wet for years. The insulation was sagging, mold was visible on the joists, and the floor above was cold. The homeowner had been quoted a full replacement twice. → We removed the failed batts with an insulation vacuum, dried the cavity, treated the mold, and lined the walls with foam board sealed at the rim. Floor temperature above rose measurably, and a follow-up moisture reading came back dry.
Problems we solve
Problems foam board insulation solves in Milwaukie
Most insulation calls we get in Milwaukie trace back to one of these four issues. Each one has a specific fix, and none of them get better on their own.
Cold floors and drafty rooms all winter
We seal the rim joist with cut foam board and canned foam, then insulate the foundation wall with 2-inch XPS. That closes the biggest air path in most Milwaukie basements and stops the draft at its source.
Musty smell and mold growth in the basement
We test the wall with a moisture meter first. If it is dry, foam board with sealed seams acts as the vapor-resistant barrier that stops condensation. If it is wet, we fix the drainage before insulating.
High energy bills every January
Rigid foam board on the walls and rim joists cuts that loss. Most customers see a measurable drop in their first full winter billing cycle after install.
Pests getting in through rim joist gaps
We cut foam board tight to the framing and seal every edge with canned foam. That physically closes the runs pests were using, rather than just covering them with batt insulation they can push through.
How much does foam board insulation cost in Milwaukie OR?
Most Milwaukie basement and rim joist jobs run $1,200 to $3,800 in 2026, depending on square footage and thickness. A single rim joist run on a 1,000-square-foot basement often lands near $1,400 to $2,000. Exterior wall sheathing during a remodel adds $2 to $4 per square foot. We quote after a walkthrough, and the number does not change unless you change the scope.
Is rigid foam insulation better than fiberglass in Milwaukie Oregon?
For basements, rim joists, and exterior sheathing, yes. Rigid foam insulation Milwaukie blocks air movement and resists moisture, while fiberglass batts filter air and lose performance when damp. Fiberglass still works well in dry interior wall cavities. In a wet Milwaukie basement, foam board is the correct material, and we will tell you if your situation is the exception.
What thickness foam board insulation for Milwaukie homes?
Two inches of XPS, about R-10, is our standard for basement walls and rim joists in Milwaukie. One inch, roughly R-5, works for exterior sheathing where you are adding to existing wall insulation. Going thicker than 2 inches rarely pays back in this climate. We match thickness to the assembly and the code requirement for your project.
Can foam board insulation be used in Milwaukie basements?
Yes, and it is the best material for the job when the wall is dry. We test with a moisture meter first. If the foundation is actively leaking, we address drainage before installing board. Once the wall is dry, 2-inch XPS with taped seams turns a damp, cold basement into usable, dry space. Most installs take one day.
Related services
Related Services
spray foam insulation
Spray foam fills the odd gaps, rim joist corners, and penetrations that cut foam board cannot reach. We often pair the two: board on the flat wall, spray foam at the seams and sill plate for a continuous air barrier in Milwaukie homes.
attic insulation
Heat rises, and an under-insulated attic in Milwaukie costs you every winter. We blow in or install batt insulation at the attic floor to stop that loss, then use foam board at the attic hatch and knee walls where rigid material performs better.
garage door insulation
An uninsulated garage door is a giant cold panel attached to your house. We fit foam board kits to the door panels and seal the perimeter, which keeps the garage 10 to 15 degrees warmer and stops cold air from pushing into adjacent rooms.Ready when you are
Get your foam board insulation Milwaukie OR quote
One walkthrough, one written number, no pressure. Call AirFortify at (855) 947-9500 and we will schedule a moisture check and measure for your Milwaukie home. Same-week estimates most months, and Oregon CCB licensed work on every job.
Talk with the local team
Request foam board insulation
Call (855) 947-9500 or send a message and we will get back to you the same business day. We schedule estimates Monday through Friday, 8am to 6pm, with emergency insulation removal available around the clock. Tell us the age of the house and what you are seeing, and we will come prepared.