Closed Cell Spray Foam Insulation

Closed cell spray foam is a two-pound density foam that delivers R-6.5 to R-7.0 per inch — nearly double the insulation value of open cell. But R-value is only part of the story. Closed cell foam is also a Class II vapor retarder at just 2 inches thick, and at 3+ inches it functions as a vapor barrier. It adds measurable structural rigidity to any surface it's applied to. It's three products in one application.

For Oklahoma's metal buildings, pole barns, and commercial structures, closed cell is often the only insulation that makes sense. Metal conducts heat and cold aggressively and sweats with condensation. Closed cell foam bonds directly to the metal surface, stops condensation at the source, and creates an insulated envelope that transforms an unlivable metal box into a comfortable, climate-controlled space.

Where Closed Cell Works Best

Any application where moisture is present or possible: crawl spaces, basements, exterior walls, rim joists, metal buildings, pole barns, and commercial structures. The vapor barrier properties eliminate the need for separate moisture barriers, and the structural reinforcement can improve a building's rack strength by up to 300%.

For new construction, closed cell in the exterior walls means you can hit code-required R-values in a standard 2x4 wall cavity — no need to upgrade to 2x6 framing. That saves the builder money on materials while delivering superior performance.

What It Costs

Closed cell spray foam is a higher upfront investment than open cell, but for applications where you need moisture resistance, structural improvement, or maximum R-value in minimal thickness, it's the only real option.

The energy savings on a metal building can be dramatic — we've seen clients cut their heating and cooling costs by 40–60% after insulating a previously bare metal structure. Every project is unique, so contact us for a free estimate based on your building's specific needs.

The Investment Perspective

Think of closed cell spray foam as a permanent upgrade to your property — not an expense. The insulation value never degrades. The structural improvement is permanent. The moisture barrier doesn't wear out. Twenty years from now, the closed cell foam in your building will perform exactly as it does the day it's installed. That's the difference between spray foam and every other insulation type on the market.