Insulation Removal

Removing old insulation before spray foam

If we are sealing your attic at the roof deck, the old insulation on the attic floor comes out first. This surprises people, so it is worth explaining.

An unvented attic works by moving the insulation from the ceiling to the roofline, which brings the whole attic inside the conditioned envelope. Leaving a foot of settled blown-in on the ceiling below that does two things you do not want. It traps the attic air between two insulated planes, which is where condensation likes to form. And it hides the ceiling plane, so we cannot see or seal the top plates, chases and can-light penetrations that are the actual leak paths. Sealing those is half the benefit of the job.

Same logic in a crawl space. If the crawl is getting encapsulated and the foundation walls are getting foam, the batts stapled between the floor joists come out. They are almost always sagging, often damp, and they get in the way of the assembly that replaces them. See crawl space encapsulation.

Rodent contamination is a different job

Once mice, rats, squirrels or bats have been living in an attic, the insulation is not just dirty — it is saturated with urine and droppings, and the smell is in the material. Vacuuming it out is the necessary first step, but there is more to it.

What that job looks like: full removal down to the deck, treatment of the surfaces underneath, and sealing the entry points so the same thing does not happen again in eighteen months. If you skip the entry points, you are paying to redo this. Removal is also the moment to find them — with the insulation gone, gaps at the soffit, ridge, gable vents and roof-wall intersections are visible for the first time in years.

We are insulation contractors, not a wildlife removal company. If there are still animals living up there, they need to be trapped and out before we start. We will tell you plainly if that is where you are.

Insulation removal FAQs

Do I need to remove old insulation, or can I just add on top?

Add on top when the existing material is dry, clean, evenly spread and free of contamination — that is a legitimate and cheaper option, and we will say so when it applies. Remove it when it is wet, matted, rodent-contaminated, smoke-damaged, badly settled, or when spray foam is going at the roof deck. The deciding factor is condition, not age.

What about vermiculite and asbestos?

Vermiculite insulation installed before the 1980s — the loose, pebbly, grey-brown material — can contain asbestos, and so can some older pipe and duct wrap. We do not disturb it. If we see it, we stop and tell you, and you will need a licensed asbestos abatement contractor to test and handle it before any insulation work happens. This is not us being cautious for the sake of it; disturbing it is what makes it dangerous.

Do you remove spray foam?

Cured spray foam is mechanically bonded to the substrate and cannot be vacuumed out the way blown-in can. It has to be cut and scraped off, which is slow, labour-intensive work and priced accordingly. It comes up most often after a bad installation — foam sprayed too thick in one pass, foam that never cured properly and still smells, or foam applied over a wet deck. Call us and describe what you are looking at.

Will removal make my house dusty?

Not if it is done properly. The material goes from the attic straight into the vacuum hose and into sealed bags, and the path from the attic access to the door is masked and covered before the machine ever runs. The work area is sealed off from the living space. The dust that people remember from bad removal jobs comes from carrying loose material through the house in open bags, which is not how this works.

Does insurance cover insulation removal?

Sometimes. If the damage came from a covered event — a burst pipe, a storm-caused roof leak, a fire — the removal and replacement may fall under your policy. Rodent damage is commonly excluded, and gradual condensation damage usually is too. Ask your adjuster before the work starts, and ask us for documentation and photos of what we find; we can provide both.

Can you do a crawl space as well as an attic?

Yes. Crawl spaces are actually the more common removal for us, because sagging, damp fibreglass batts between floor joists are close to universal in older houses around here. Low clearance makes it harder work than an attic, and that shows in the price, but it is routine for us.

How much does insulation removal cost?

It comes down to square footage, how deep the existing material is, what type it is, how difficult the space is to get into, and whether contamination means extra containment and disposal. A clean open attic with six inches of blown-in is a very different job from a low crawl space full of wet, rodent-damaged batts. We measure it and hand you a written price before anything starts, and the inspection is free.

How soon can new insulation go in?

Usually the same day. Removal and installation on one visit is the normal way we do it, because the access work, the setup and the containment are already done. Doing them as two separate trips costs more and takes longer.

Towns we cover for insulation removal

We remove attic and crawl space insulation throughout the region, including Chattanooga, Hixson, Ooltewah, East Ridge, Red Bank, Signal Mountain, Soddy-Daisy, Collegedale, Harrison, Cleveland, Fort Oglethorpe, Ringgold, Dalton and Rossville. See all the areas we serve, or look at attic insulation and crawl space encapsulation.