Spray Foam Insulation in Overland Park

Last updated March 2026

Why OP Homes Waste So Much Energy

Most Overland Park homes went up with fiberglass batts and very little attention paid to air sealing. Look in the attic of a 40–50 year old house and you will usually see insulation that has sagged, is matted down, and is nowhere near the R-value it once had. At the same time, conditioned air is leaking out through every gap, seam, and penetration in the shell of the house.

Overland Park’s typical housing stock is almost made for spray foam upgrades. The ’60s through ’80s homes that make up a big part of OP — Deer Creek, Blue Valley, the Metcalf corridor and similar neighborhoods — were insulated to the minimum codes of that time, which were pretty light. Fiberglass batts tossed in the attic, maybe a little in the walls, and almost nothing stopping air from moving in and out. After decades of settling, shifting, and being crushed under stored boxes, a lot of that fiberglass is just sitting there, not doing much of anything.

Spray foam takes care of both problems at once. It insulates and it air seals in one step. No separate trip around the attic with a caulk gun, trying to seal around wires, pipes, can lights, and ductwork. The foam expands, bonds to the surfaces, and fills the cracks as it goes.

Open Cell vs. Closed Cell — Which One for Your OP Home

Open-cell spray foam is a great fit for attics and interior walls, giving you strong thermal performance at a lower cost per inch. Closed-cell foam is denser, adds stiffness to what it’s sprayed on, and creates a true moisture barrier, which makes it a natural choice for crawl spaces, rim joists, and basement areas.

In an Overland Park attic, open-cell foam applied at the roofline is usually the way to go. It fills the bays between rafters, stops the wind-wash and air movement that rob fiberglass of its effectiveness, and delivers excellent R-value per inch. Your attic becomes part of the conditioned space instead of a hot or cold buffer zone, so your HVAC equipment works less and the upstairs bedrooms feel comfortable in both January and July.

For crawl spaces and rim joists — and a lot of OP homes have one or both — closed-cell foam is typically the better option. It resists moisture instead of soaking it up, it adds structural rigidity to that rim joist band where the floor system sits, and it serves as a vapor barrier in the same application. With Johnson County’s expansive clay soils and the moisture they hold, closed-cell foam in the crawl space is a simple, long-term way to cut down on dampness, mold, and cold floors above.

More insulation info: Spray Foam Insulation Hub · Attic Insulation · Crawl Space Insulation

OP services: All Overland Park Services · Foundation Repair in OP · Basement Waterproofing in OP