Frequently Asked Questions

HomeGuide lists installed spray foam at $1.50 to $5.00 per square foot, with open cell at $1.50 to $3.50 and closed cell at $3.00 to $5.00. A rim joist job is often $2,000 to $2,500 and a whole house $8,000 to $20,000. We measure your areas and give you a written number.

The worry usually comes from bad installs: foam sprayed too thick in one pass, wrong mix ratios that leave an odor, or foam on a roof deck that hides a leak. Proper thickness per pass, ventilation, a clean substrate and a record of what was installed address most of it. We give you that record in writing.

It costs more per square foot than blown-in fill, it needs a cure period before you go back in, and it is hard to remove once applied. That is why we do not put it everywhere. On an open attic floor, sealed and then blown, fill often gives more R-value per dollar.

Some buyers, inspectors and lenders get nervous when they cannot see the roof deck or framing behind foam, especially in an attic. Keeping the install record, foam type, thickness and dates helps. Using foam on rims and walls, not covering a roof deck you may need to inspect, also avoids most of the concern.

The Wisconsin code summary lists R-49 for ceilings in Zone 6, which is where Brown County falls. In blown cellulose that is roughly 13 to 16 inches, depending on the product. Sealing the ceiling first matters as much as the depth.

Focus on Energy, Wisconsin's statewide program, has published rebates for attic, wall, foundation and sill insulation and for air sealing done along with insulation, paid through its registered Trade Ally contractors. Program terms change each period, so check focusonenergy.com before you count on one.

Batts and loose fill slow heat moving through them, but air can still pass through and around them. Spray foam fills the gaps and seals air movement as well as insulating. That is why foam on a rim joist can change how a basement feels more than its R-value alone suggests.

HomeGuide advises allowing at least 24 hours before going back into the sprayed area. For a basement rim joist you can often stay in the rest of the house if the area is closed off and ventilated. We go over the plan for your house before we start.

It can, and it turns the attic into a conditioned space. It also makes the roof deck hard to inspect, so we only recommend it where the attic holds ductwork or equipment or the roof shape leaves no other option.

No. Foam is not a repair for a roof, foundation or plumbing leak, and covering one hides the damage. Leaks get fixed first, then we insulate.

Sealing the ceiling and adding insulation removes the main cause, which is warm air reaching the roof deck. Gutters, roof shape and venting also play a part, and we look at those during the visit.

Usually not, if it is dry and clean. We add on top after sealing. Insulation that is wet, moldy, full of droppings or blocking the air sealing work should come out, and we price that separately.

For an open attic floor, sealed and then blown in is usually the better value. Foam fits sloped ceilings, kneewalls and spots too shallow for loose fill.

The Wisconsin code summary lists R-49 for ceilings in Zone 6. That is a sensible target when you add insulation to an older attic.

HomeGuide lists rim joist spray foam at about $2,000 to $2,500 for a typical house. Long or broken-up rims, tight access and prep work can move that, and the written estimate is the price.

Batts leave air gaps and let humid air reach the cold wood, which can lead to condensation. Closed-cell foam seals the surface and avoids that.

Yes. It is far easier to insulate bare walls than to remove drywall later. Tell us your framing plans and we will schedule around them.

Foam left exposed in living areas generally needs a fire-rated covering such as drywall. Rim joists are often treated differently. We explain what applies to your basement.

A 20x20 garage has roughly 400 square feet of ceiling plus wall area that depends on height. HomeGuide lists closed cell at $3.00 to $5.00 per square foot and a typical minimum of $1,000 to $2,000. We measure and give you a written price.

Closed-cell foam sprayed directly on the steel keeps warm, moist air from reaching the cold metal, which is what causes the drip.

Rules differ by town and by how the building is used. Check with your local building office; we can tell you what we would install so you can ask the right question.

We seal around door frames. For the door itself, an insulated door usually works better than foam on the panels.

HomeGuide lists blown-in at $1.00 to $2.80 per square foot, and an attic at $900 to $3,600. Fixr's attic range for about 1,500 square feet is $1,750 to $5,500. We give you a written price after measuring.

Loose fill settles a little over time, which is why we blow to the settled depth for the target R-value. Dense-packed walls are installed tight enough to resist settling.

Yes. We drill small holes, fill each cavity and patch. We check for wiring and fire blocking first.

Per square foot, yes. Foam earns its cost in rim joists, walls and tight spaces where air sealing matters most.

Usually because it was put in the wrong spot, such as on a roof deck that now needs inspection, or because a bad mix left an odor. It is cut and scraped out, which takes time. We look first and price it in writing.

HomeAdvisor lists removal at $1 to $2 per square foot, with a typical job around $600 to $1,200. Removal plus replacement averages about $1,852 in its data.

If the insulation is full of droppings or nesting, removing it lets us clean, seal entry points and start fresh.

Do not disturb it. Have it tested; if it contains asbestos, an abatement contractor has to remove it.