Spray Foam Insulation in Kalamazoo, MI

Spray foam insulation goes on as a liquid, expands into cracks and gaps, and cures in place, so it insulates and blocks air movement in a single step. In Kalamazoo, where the airport's 1991-2020 normals show a January average low of 18.1F and a record low of -22F, that air seal does as much for comfort as the R-value. We install both closed-cell and open-cell foam, and picking between them is the first call on every job.

Closed cell vs open cell, in plain terms

Closed-cell foam cures into a rigid, dense layer. HomeGuide lists it at R-5 to R-7 per inch. At typical thickness it slows water vapor, sheds liquid water and stiffens the surface it is sprayed on. Open-cell foam is spongy and light, rated around R-3.5 to R-3.7 per inch, and it expands far more, filling irregular cavities and damping sound. Because vapor can pass through it, open-cell in a Zone 5 climate needs a vapor retarder or a design that lets the assembly dry.

In practice, closed-cell goes where cold surfaces and moisture meet: rim joists, basement and crawl space walls, the underside of roof decks in vaulted ceilings, and the steel of pole barns and shops. Open-cell goes in interior and exterior wall cavities during remodels, between floors, and in some attic rooflines where the moisture plan is sound.

Where foam earns its cost in a Kalamazoo house

The rim joist is the most common spot. It wraps the whole basement at the top of the foundation wall, it is often bare wood or has a loose batt pushed against it, and it lets cold air in all winter. Two to three inches of closed-cell foam seals and insulates it in one pass.

Older homes in the city's historic neighborhoods add their own list: open framing bays between floors that act like chimneys, kneewalls in story-and-a-half houses, sloped ceilings in finished attics, and porches that were closed in decades ago. Newer homes in Portage and the townships tend to need foam at bonus-room floors over garages, cantilevered floors, and the band joist between stories.

Vaulted ceilings and steel buildings

Where a ceiling follows the roof line and there is no attic, getting enough R-value with fiberglass while keeping a vent channel is tough. Closed-cell foam against the underside of the roof deck can insulate and air seal without the vent space. In pole barns and metal shops, foam on the steel stops the condensation that forms whenever warm, damp inside air meets cold metal.

When foam is the wrong choice

Foam will not fix a leak; it hides one. Roof, window and plumbing leaks get repaired first. Foam is also not the cheapest way to insulate a wide-open attic floor; sealing the bypasses and blowing in cellulose or fiberglass usually costs less for the same R-value. And we do not cover knob-and-tube wiring or vermiculite that might contain asbestos until it has been checked. If we see any of these, you hear about it before you see a price.

Getting ready and getting back in

Spraying goes quickly; prep and cleanup take longer. We cover floors and belongings, mask windows and outlets, and ventilate the space. HomeGuide advises staying out for 24 hours or more while the foam cures, so a basement job may mean a night away, while a detached garage or barn may not affect the house at all. In cold months we plan around the temperature limits of the material.

Fire protection

Exposed foam in living spaces, attics and crawl spaces generally needs a thermal or ignition barrier, depending on the space and the product. We tell you what the space needs and include it in the estimate, so nothing is left out.

Call (269) 230-2389 or request an estimate, and we will measure the spaces and recommend a foam for each. Get a free estimate