Attic Insulation Removal in North Carolina

In most homes it's one job in two halves. The damaged layer is vacuumed out, and fresh insulation is blown onto the clean floor once its leaks are sealed.

Ask for the removal and the new layer as separate lines on the estimate, so you can see what each half involves. Afterward, the Federal Trade Commission's R-value Rule entitles you to a contract or receipt from the installer. For loose-fill that paper gives the square footage covered, the depth at installation and the depth it should settle to, the R-value and the bag count.

Because some insulation spoils whatever is laid over it. ENERGY STAR tells homeowners that old insulation rarely has to come out and that new material can normally be laid right over it, with four exceptions: an old layer that is wet, one that is moldy, one that smells and one that contains animal waste. Cover any of those and the moisture, mold or odor stays in the attic, only harder to reach.

There's a practical reason too. A ceiling that was never air sealed is easiest to seal with nothing on it, and a layer too flat or dirty to move aside and put back hides every gap. If yours is dry and clean, only thin, we'll tell you, and a top-up is the smaller job.

Insulation that mice, rats or squirrels have lived in comes out. Droppings, urine and nesting work down into it, and no top-up covers the smell. The animals have to be gone and their openings closed first, or the new insulation becomes the next nest. Trapping and exclusion are a wildlife control company's work, not ours. Our part starts after that: we vacuum out the soiled insulation, then sanitize and deodorize the attic before any new insulation is blown in.

The damage is often wider than it looks from the hatch, since tunnels run under the surface. Photos help. If we can't tell from those and the square footage whether one section or the whole attic has to go, we make a special visit. Either way, the crew checks the whole floor with you on install day before anything comes out.

Wet insulation comes out once the leak is repaired. A small damp patch found early can sometimes dry where it lies, but the EPA advises getting water-damaged materials dry within a day or two to keep mold from growing, and attic leaks are rarely caught that quickly. Insulation that stayed soaked, or has turned matted, stained or musty, is past saving.

Smoke works the same way. Soot and odor held in the insulation can keep a smell coming back after the rest of the house is clean, so smoke-damaged insulation is vacuumed out and replaced, not buried.

By the EPA's description, vermiculite is a pour-in fill of pebble-like pieces, most often gray-brown or silver-gold, and in some older homes it fills the spaces between the joists. The EPA says to assume it holds asbestos, to keep from stirring it up and not to attempt taking it out on your own. Any work that would disturb it belongs to a professional asbestos contractor.

So we don't vacuum out vermiculite, and we don't work around it. If we find it, before the job or on install day, we stop, show you what we saw and leave the next step to an asbestos professional. Once that contractor has cleared the attic, we can blow in the new insulation, and that estimate is free.

The bare floor gets sealed. ENERGY STAR expects a contractor to close the leaks in the attic floor before any insulation goes in, and with nothing in the way, every gap is in plain sight. Then come the baffles, the hatch dam and clearance at recessed lights.

Next, new insulation is blown in to the depth the estimate states. For a floor with nothing left on it, ENERGY STAR's retrofit table points to R-60 where a county is in climate zone 4 or 5 and R-49 where it is in zone 3. Which zone applies depends on the county and the climate map, and our attic insulation R-value guide for North Carolina sorts out the counties.

Every attic is different, so there's no set number of hours. The size of the floor and the depth of the old material decide how much comes out. The hatch, the roof pitch and whatever is mixed into the insulation decide how fast. What most often sets the date is the cause: a leak waiting on a roofer, or animals still in the attic, can hold up the start longer than the removal itself takes.

No two removals price the same, so we don't print a figure. The price follows the amount of material: the floor area times the depth. The kind matters, because rolled batts and blown loose-fill come out in different ways. So does what's in it, since a fouled or moldy layer is handled with more care. A cramped hatch or a shallow roof slows every step.

Then comes the second half: the sealing, the baffles and the new insulation. Most attics we price from the square footage and what you tell us is up there; photos help. When an attic needs a closer look, we make a special visit. We price what the attic needs and nothing more. For the replacement half, our guide to attic insulation cost explains what moves the price of a new layer and how to weigh one written estimate against another.