Vacuum removal · foam cut-out · damaged fill
Insulation and Spray Foam Removal in Wausau, WI
Most old insulation doesn't need to come out. We'd rather top up a dry, clean attic than charge you to empty it. But fill that's been soaked by an ice dam, nested in by mice for a decade or smoked by a fire is past saving, and laying new over it buries the problem and the smell.
Start with the scorecard. It's the same list we go through on a first visit.
Remove or Replace Insulation? Score What You Have
Nothing ticked: the old fill can probably stay. Seal under it and top it up.
Some marks: we may remove only the damaged areas, or it may be cleaner to take it all. We'll look before deciding.
Remove it. With damage or contamination like this, it comes out, the attic gets cleaned and sealed, then re-insulated.
Stop, and don't disturb it. The EPA says to assume vermiculite may contain asbestos and to hire a professional asbestos contractor before any work that would disturb it. We don't remove vermiculite; we insulate after it's been abated.
A first look, not a site visit. Vermiculite guidance: U.S. EPA, "Protect Your Family from Asbestos-Contaminated Vermiculite Insulation."
Vermiculite: The Insulation Nobody Should Disturb
Vermiculite was poured into attics and wall cavities for decades. The EPA describes it as "pebble-like, pour-in" and "usually gray-brown or silver-gold." Most of what was sold in the U.S. from 1919 to 1990 came from a mine in Libby, Montana that was contaminated with asbestos, which is why the EPA's advice is blunt: assume it contains asbestos, leave it alone, and don't try to remove it yourself.
Plenty of houses in Wausau's older neighborhoods are from that era. If you see it, don't go poking. Send a photo from the hatch and keep people out of the attic.
What's on your attic floor?
Look from the hatch; don't dig inVermiculite
How it looks: Pebble-like granules, not fibers, poured loose between the joists. The EPA describes it as usually gray-brown or silver-gold. It feels like light gravel, not fluff.
What it means for removal: Stop. Leave it undisturbed, keep people out of the attic and hire a professional asbestos contractor. We insulate after it has been abated, never before.
Loose fiberglass
How it looks: Fluffy, fine fibers in white, pink or yellow, blown in a loose layer. Gray or black streaks on top show where house air leaked up through it.
What it means for removal: Usually stays. Pull it back, seal the leaks the streaks point to, then top it up. It comes out only when it is wet, moldy or fouled.
Cellulose
How it looks: Gray, shredded-paper fill, sometimes with flecks of print visible. Denser than fiberglass and settles into a fairly even layer.
What it means for removal: Stays if dry. Cellulose that was soaked by an ice dam or roof leak mats down and loses its R-value, and that part comes out.
Fiberglass batts
How it looks: Blankets laid between the joists, often with a kraft-paper face. Common in attics that were insulated before blown fill was usual.
What it means for removal: Usually stays, but batts hide the top plates underneath. They get lifted for sealing, then blown fill goes over them.
Rock wool
How it looks: Mineral fibers, gray or brownish, denser and more matted than fiberglass. Often found in houses from the middle of the last century.
What it means for removal: Stays if dry and clean. If you can't tell rock wool from vermiculite in your attic, treat it as vermiculite and send us a photo before anyone touches it.
Foam on the framing
How it looks: Bonded to the roof deck, rafters or walls. Rigid and hard if closed-cell, soft and spongy if open-cell.
What it means for removal: Stays unless it failed: pulled away, cracked, never cured or still smells. Then it is cut out by hand, which is the slow kind of removal.
Vermiculite description and advice: U.S. EPA. The rest is what each material typically looks like; a photo from the hatch settles it.
Insulation Removal Bags, Vacuums and What Removal Day Looks Like
A high-powered insulation vacuum sits outside, on the truck or the driveway, discharging into large collection bags. Only the hose comes into the house.
Floors from the door to the hatch get covered, the hatch area gets sealed off with plastic, and anything below it gets moved or covered.
The crew works from the far eaves back toward the hatch, so nobody walks through what's already cleared. Full bags are sealed and stacked outside.
With the fill gone, the attic floor is in plain sight: every top-plate gap, open chase, bath fan dumping into the attic and mouse entry point. This is the best chance the house will ever have to get them sealed properly.
Sealing, baffles, dams, then new insulation to R-49 or more, usually in the same visit. Bags go to disposal.
Spray Insulation Removal: Cutting Out Foam That Failed
Spray foam removal is a different job from vacuuming loose fill. Foam is bonded to the framing, so it comes off by cutting and scraping, bay by bay. The usual reasons we see:
- A bad install. Foam that didn't cure right, pulled away from the framing, or was sprayed too thick in one pass and cracked.
- A persistent odor. Foam that still smells long after its re-occupancy time is a reason to call the original installer first, and sometimes to cut it out.
- A roof or rot repair. When roof sheathing has to be replaced, the foam bonded to it comes off with it or before it.
- A home sale or inspection that flags foam on a roof deck or in a space where it doesn't belong.
The honest part: cutting out foam is slow, hand work, and it often costs more than spraying it did. That's why we spend so long deciding which foam goes where before we spray anything.
Wall Insulation Removal After Water, Fire or Pests
Insulation inside a finished wall usually comes out only when the wall is open anyway: after a burst pipe, a fire or a pest problem, or during a gut remodel. Wet batts and soaked cellulose get pulled and bagged so the framing can dry before anything closes it in again. Rodent-fouled wall fill comes out with the drywall.
With the wall open, it's the cheapest moment there will ever be to insulate it properly. The options for open studs, from batts to closed-cell, are on wall insulation.
Replace Insulation the Right Way Once It's Out
Removal is only half a job. An empty attic is the best chance to seal every leak at the attic floor, then put back the right amount: R-49 is the code minimum for a ceiling in Marathon County. The sealing and depth are on attic insulation; the fill itself is usually blown-in cellulose or fiberglass.
Call (715) 814-9546 or send photos from the hatch. For everything else we do as a spray foam insulation contractor serving Wausau, see the homepage.
Removal Questions
Do you remove vermiculite insulation?
No. The EPA says to assume vermiculite may contain asbestos, leave it undisturbed and hire a professional asbestos contractor before any work that would disturb it. If we find it, we stop and refer you. Once it has been abated, we can insulate.
Is the house a mess after insulation removal?
It shouldn't be. The vacuum and collection bags sit outside; inside, only the hose runs through the house, along a covered path to the hatch. Dust at the hatch is the usual extent of it.
Can sprayed foam be removed?
Yes, by cutting and scraping it off the framing by hand. It is slow, so removing foam often costs more than spraying it did. Closed-cell foam bonded to a roof deck is the hardest; open-cell comes off more easily.
What happens to the old insulation?
It is bagged and hauled away for disposal. Contaminated material, like fill full of rodent waste, stays sealed in the bags from the attic to the disposal site.