Spray Foam Insulation in Norman, Oklahoma

What We See in Norman’s Housing Stock

Norman is a college town with deep roots, and its housing stock tells that story decade by decade. Understanding what is behind the walls and above the ceilings in Norman’s neighborhoods is the first step toward insulating them correctly.

The OU campus area — roughly bounded by Lindsey Street, Flood Avenue, Boyd Street, and Jenkins — is surrounded by a dense ring of housing that ranges from 1920s bungalows to 1960s apartment conversions to purpose-built student rental duplexes. Much of this housing was built cheaply and insulated minimally. Landlords who own property here face a recurring cycle: tenants complain about $200-plus electric bills in summer, comfort is poor, and the properties are hard to differentiate in a competitive rental market. The insulation in these homes is often R-11 fiberglass batts (if anything) in the walls and maybe 4 inches of blown fiberglass on the attic floor — degraded, compressed, and doing almost nothing.

East of Jenkins Avenue and stretching toward the Canadian River, Norman’s east side sits on a high water table. This is not abstract — homeowners here deal with damp crawlspaces, moisture wicking up through slab foundations, and a general humidity problem that fiberglass insulation makes worse. Fiberglass absorbs moisture, loses R-value, and becomes a habitat for mold. We have pulled soaking wet fiberglass out of east Norman crawlspaces more times than we can count.

The 1970s ranch home is Norman’s signature residential building. Streets like Alameda, Constitution, Vicksburg, and the neighborhoods between Main Street and 24th Avenue NW are lined with single-story ranch homes on slabs or shallow crawlspaces. These homes were built during an era when insulation was an afterthought — R-11 in the walls if the builder was conscientious, R-19 blown fiberglass on the attic floor, and a vented attic that turns into an oven every summer. The ductwork runs through the attic, unprotected, and the homeowner pays OGE to cool air that gets reheated before it reaches the register.

South Norman and the Brookhaven, Brookwood, and Greenbriar neighborhoods have 1980s and 1990s homes with marginally better insulation — but still built with vented attics, fiberglass batts, and no air sealing to speak of. These homes are at the age where the original insulation has settled, compressed, and lost a significant percentage of its rated R-value.

Newer Norman construction — the Stone Lake, Summit Lake, and Cascata developments — features modern framing and some builders specifying spray foam. But even in these newer neighborhoods, plenty of homes were built with minimum-code fiberglass and are underperforming.

Common Spray Foam Projects in Norman

Vented-to-unvented attic conversions are the bread-and-butter of our Norman work. The 1970s ranch home with ductwork in a 140-degree vented attic is the project we know best. We clear the old fiberglass, seal every penetration in the ceiling plane — can lights, electrical boxes, plumbing vents, bath fans — and spray 5.5 inches of open-cell foam onto the underside of the roof deck. The attic drops from 140 degrees to 80 degrees in summer. The ductwork is now inside conditioned space. The HVAC system suddenly works the way it was designed to.

Crawlspace encapsulation on Norman’s east side is critical moisture management. We spray 2 inches of closed-cell foam on crawlspace walls and the underside of the subfloor, seal all vents, and install a dehumidifier if the space warrants it. Closed-cell foam’s low vapor permeance — under 1 perm at 2 inches — creates a moisture barrier that keeps the high water table’s humidity out of the floor assembly.

Rental property insulation near the OU campus is a growing part of our work. Smart landlords are investing in spray foam because it pays for itself through reduced tenant complaints, lower vacancy rates, and the ability to command slightly higher rent for a property that stays comfortable year-round. We insulate duplexes, small apartment buildings, and single-family rentals near campus.

Wall cavity retrofits in 1970s and 1980s Norman homes address the air infiltration problem. Oklahoma wind drives air through every gap around electrical outlets, window frames, and bottom plates. Spray foam in the wall cavities stops that infiltration cold. Homeowners notice immediately — the house is quieter, drafts disappear, and the thermostat setting that used to leave bedrooms freezing now keeps them comfortable.

New construction in Norman’s growth corridors involves working with builders to deliver a high-performance envelope from the start. We spray closed-cell in exterior walls and open-cell on the roof deck, coordinate with the HVAC contractor on system sizing, and help the builder pass the blower-door test with numbers well below the code maximum.

Why Norman Homeowners Choose Spray Foam

Norman’s location in the Canadian River valley creates a moisture-heavy microclimate that differs from higher-ground areas of the metro. Summer humidity is oppressive. Morning fog hangs in the river bottoms. The soil stays wet. This moisture environment means insulation has to do more than resist heat flow — it has to manage vapor drive and air-transported moisture. Spray foam does both. Fiberglass does neither.

The wind matters just as much. Norman is in tornado alley, and even routine weather brings sustained winds of 20 to 30 mph. Every gap in the building envelope is a pathway for air infiltration. The only way to stop it is a continuous air barrier, and spray foam is the only insulation material that creates one without additional products and labor.

Norman homeowners are also, on average, well-educated and research-driven. They read building science, they understand R-value versus air-sealing, and they know that the cheapest insulation is rarely the best value. When they see the blower-door numbers, the utility bill comparisons, and the moisture data, spray foam is an easy decision.

Cleveland County codes follow the 2009 IECC for Climate Zone 3. Prescriptive requirements are R-30 for ceilings and R-13 for walls. Spray foam meets these requirements with less depth than fiberglass — 5 inches of open-cell hits R-18.5 on the roof deck (with the code trade-off for unvented assemblies), and 2 inches of closed-cell in a 2x4 wall gives R-13. The air-sealing benefit is included at no extra material or labor cost.

Our Services in Norman

Bo’s Spray Foam serves every Norman neighborhood with:

• Open-cell spray foam for attic roof deck conversions and interior sound control
• Closed-cell spray foam for crawlspaces, wall cavities, and moisture-critical areas on Norman’s east side
• New construction insulation for builders in Stone Lake, Summit Lake, and other Norman developments
• Full insulation services for Norman’s extensive 1970s ranch home inventory
• Metal building insulation for shops and outbuildings on larger Norman properties

Norman is part of our core service area. Call (405) 437-0146 to discuss your project.

What Norman Customers Say

[Testimonial placeholder — Norman customer story about crawlspace encapsulation or 1970s ranch retrofit]