Frequently Asked Questions

Closed-cell foam has the highest R-value per inch, about R-5 to R-7 according to HomeGuide, compared with roughly R-3.5 to R-3.7 for open-cell. That is why closed-cell is used where space is tight, like a 2x4 wall or a rim joist.

The concerns trace back to bad installs: foam mixed wrong that smells or shrinks, or foam sprayed over a roof deck that was already leaking, hiding rot. Inspectors and buyers may also want to see the roof deck. We inspect the roof and framing first and document what we spray.

National ranges from HomeGuide run $1.50 to $5.00 per square foot installed, with minimum charges around $1,000 to $2,000 or more. A rim joist job often lands near $2,000 to $2,500. We quote after seeing the house, and that quote is the price.

Standard spray foam is not meant for hot surfaces. Chimneys, flues and recessed lights need clearances and metal or fire-rated materials around them, which we install before insulating near them.

Yes. We spray closed-cell foam on steel and post-frame buildings across the valley and into Holmes County.

Yes. HomeGuide recommends staying out at least 24 hours after spray foam is applied. Blown-in insulation does not need that.

Several national chemical companies produce two-part spray foam systems, and suppliers carry multiple brands. More important than the brand is that the product is rated for the use and installed at the right temperature and mix, with any required thermal or ignition barrier.

Usually on the rim and sill above it. Stone walls breathe and can wick water, so we check moisture before foaming the wall itself.

Air sealing can reduce natural air leakage enough that ventilation needs a look. We point out bath fans and combustion appliances that should be checked.

Usually 2 to 3 inches of closed-cell, which gives about R-10 to R-20 depending on the product.

Ohio's residential energy table lists R-49 for ceilings in Zone 5A, which covers Dover and most of the state.

Yes. Air leaks carry heat and moisture through insulation. Sealing first makes the insulation work as rated.

Ice dams form when warm attic air melts roof snow. Sealing the attic floor is the main fix.

Most are done in a day.

HomeGuide lists about $2,000 to $2,500 for a typical house. We quote after measuring yours.

Damp air, yes, with closed-cell foam. Liquid water needs to be fixed first.

In a finished or occupied basement, most foams need a thermal barrier. We tell you what applies.

Often yes. Even newer homes usually have only loose batts at the rim.

Often an inch or two of closed-cell is enough for condensation control; heated buildings need more.

Yes, with planning. We section off areas and work around your schedule.

Yes. Foam noticeably dampens rain noise.

Once cured, yes, but ventilation must still be planned. We discuss it during the visit.

Some settling happens, more with cellulose. We install to the settled depth needed for the target R-value.

In an open attic, sealing plus blown-in reaches the same R-value for less. Foam is better for rim joists, damp walls and tight spaces.

Yes. We drill from outside or inside and patch.

Roughly 13 to 16 inches depending on the material.

In a sealed and insulated crawl space, yes. Open vents let humid summer air in.

It helps, but walls and the rim joist still need insulation and sealing.

We work in tight spaces. We confirm access during the visit.

Sealing out damp air and covering the ground usually reduces it a lot.