Frequently Asked Questions

HomeGuide puts installed spray foam at $1.50 to $5.00 per square foot: open-cell $1.50 to $3.50, closed-cell $3.00 to $5.00. Thickness and access move the price; we measure and quote in writing.

Blown-in and batts are cheaper per square foot; HomeGuide lists blown-in at $1.00 to $2.80. Foam costs more but seals air at the same time. Many homes get foam on rims and problem areas and blown-in in the attic.

Several chemical manufacturers make two-part spray foam systems. What matters more for your house is that the product suits the surface and is installed at the right thickness and temperature. We list the product type on the quote.

Olathe adopted the 2018 IECC in 2019, which lists R-49 for ceilings in climate zone 4 for new work. ENERGY STAR recommends R-49 to R-60 for existing homes depending on what is there.

Yes. Closed-cell foam on the rim and walls is easiest before framing, and it keeps damp air off cold concrete.

HomeGuide advises at least 24 hours. We give you the time for the specific product.

On rims, bonus rooms, kneewalls and open walls, usually yes. On an open attic floor, sealing plus blown-in is often the better buy.

At about 2 inches or more it acts as a vapor retarder, which is why it is used on basement walls.

Standard spray foam needs open cavities. For closed walls we use dense-pack blown-in.

Rim joists take a few hours; a bonus room or full basement a day or so.

For R-49 to R-60 with loose fill, usually well over a foot. The quote lists depth and R-value.

Only if it is wet, moldy or animal-soiled. Dry, clean insulation can stay under the new layer.

Evergy's Kansas chart lists $0.04 per square foot for air sealing up to $300. Check the current requirements.

Most attics take a day.

Yes, it is the easiest and best time.

Depending on use, foam may need a thermal or ignition barrier. We explain what applies.

A few feet clear along the walls.

Yes. It is one of the most cost-effective upgrades in most homes.

Yes, with dense-pack cellulose through small holes.

Foam also seals air around wires and boxes, which batts cannot do.

We choose inside or outside access based on your finish and patch the holes.

A typical house takes one to two days.

It has unconditioned space below, behind and above it. Gaps in any of those let heat in.

Often, to reach the floor bays. We patch it afterward, or you can leave it for your drywall crew.

Sealing the floor and shared walls closes most paths for garage air.

Yes, walls and roof or ceiling.

If the roof leaked and the insulation got wet, yes.

Do not disturb it. Have it tested first.

Usually a day, with reinsulation the same or next day.

We remove it; have active pests handled first.