Frequently Asked Questions

HomeGuide's 2026 national range is $1.50 to $5.00 per square foot installed, with closed-cell at the higher end. Small jobs often have a minimum of $1,000 to $2,000 or more. We price your house after seeing it.

HomeGuide lists whole-house spray foam at $8,000 to $20,000, and Fixr at $10,000 to $30,000. In an older Scranton house, a mix of attic sealing with blown-in, rim foam and dense-pack walls usually costs less than foaming everything.

Usually because of bad installs, such as foam sprayed over roof leaks, rot or old wiring, or foam that was mixed or cured badly. In old houses it can also trap moisture in walls that need to dry. We use foam where it fits and cellulose where the wall needs to breathe.

It costs more than cellulose or fiberglass, it is hard to remove later, and it needs careful installation. It is not a cure for leaks. On an open attic floor or in plaster walls, other materials often work as well for less.

PPL's rebate form for June 2026 through May 2031 lists insulation rebates of 75% of cost up to $500 for electric-heat homes, or $200 for homes with central air and non-electric heat. Check the current rules before you start.

Yes. We dense-pack cellulose through small holes, which also helps block the open cavities that let air rise through the house. We check wiring first.

Yes, where it is the right material and installed properly. We avoid it over live old wiring and in walls that need to dry.

Closed-cell foam can go on dry stone. We check for moisture and leave areas that need to dry.

HomeGuide advises 24 hours or more. We confirm for your job.

Its rebate form says rim joist insulation must be spray foam, rigid foam or a combination.

A framing style where studs run from foundation to roof without a plate at each floor, leaving open channels for air to rise.

It removes the main cause, warm air reaching the roof deck.

Not if it is dry and clean. Vermiculite should be tested first.

One to two days for most houses.

We weatherstrip the door, insulate the stairwell walls and the door, and seal around the frame.

The upper part, if dry. Lower stone walls often need to dry and are left alone.

Usually noticeably, since it stops cold air at floor level.

Its form lists basement walls if the insulation reaches R-15 continuous or R-19 cavity.

Usually a day.

We seal around the frames. Broken or rotted windows need repair first.

We can weatherstrip and insulate the inner door.

Yes, through small holes.

Live knob-and-tube should be replaced or confirmed safe before walls are filled.

Not when packed to the right density.

One to three days depending on the house.

Yes, each wall or room can be priced separately.

Porches were often enclosed without insulation in the walls, floor or ceiling. We can check and quote each part.

It is treated for fire resistance. It must still be kept away from chimneys and non-rated fixtures.

Some, so we blow extra to account for it.

On an open attic floor, usually much cheaper per R-value.

Usually a day.

Sound ceilings can. We check for sagging or loose plaster first.

Clearing the floor helps. We can plan around a storage area.

Pebbly, gray-brown or gold loose fill, often with a shiny look.

No, that is work for a licensed abatement contractor. We insulate after.

Usually a day.

No, only if the insulation is wet, soiled or unsafe.

The hose runs from outside to the attic, and we protect the path.

Heavily soiled insulation is better removed before sealing. We assess it on the visit.