R & A Seamless

03/19/2026

Specializing in closed cell spray foam and serving central Missouri gives a call at 402-260-9963.

01/29/2026

24,000 sq ft of overhead, 18 sets of foam.

08/12/2025

We just finished up this new pole barn, 2” closed cell in the walls and 12” blown in cellulose in the ceiling. Give us a call for a free estimate 402-260-9963

04/04/2025

04/04/2025

We offer Closed cell spray foam, blown in insulation, and roof coating systems for low slope commercial roofs, pole barns, shops etc. give us a call at 402-260-9963 for your free estimate. We serve Nebraska and western Iowa

03/16/2025

Spray Foam Does More Than Insulate—It Reinforces Your Roof

Most people think of 2lb closed-cell spray foam as just an insulator, but it does a lot more—it strengthens your roof deck or metal structure, making it more resistant to high winds, impact, and even seismic forces.

What Is Racking Strength & Why Does It Matter?

Racking strength is your roof’s ability to resist side-to-side movement caused by wind, storms, or even the natural shifting of a building over time. A weak roof deck or metal building can flex too much, leading to fastener failure, leaks, or even structural collapse in extreme conditions.

How Spray Foam Strengthens Roofs & Metal Buildings

✅ Bonds the roof sheathing (OSB/plywood) or metal panels to rafters, creating a one-piece structure instead of separate components.
✅ Distributes lateral forces evenly, reducing stress on fasteners and preventing panels from shifting or pulling away.
✅ Increases wind uplift resistance, critical for shops, barns, and homes in storm-prone areas.
✅ Reduces vibration and flex in metal buildings, making them quieter and more stable.

How Much Strength Does It Add?

2-3 inches of 2lb closed-cell foam → 200-300% increase in racking strength

4-6 inches → 300-400%+ increase (for extreme wind/seismic areas)

What About the Added Weight?

Spray foam adds about 0.51 lbs per square foot at 3 inches and 1.02 lbs at 6 inches. For most structures—including metal shops and barns—this is a non-issue, but it’s something to consider for older or lightweight buildings.

Real-World Applications

✔ Homes in hurricane zones use spray foam to prevent roof failure in high winds.
✔ Shops & metal buildings benefit from added strength, making panels more secure and reducing movement.
✔ Older barns & warehouses get a structural upgrade while improving insulation and moisture control.

Spray foam isn’t just about R-values—it’s about making buildings stronger, more durable, and better able to handle whatever nature throws at them.

Thinking of reinforcing a roof or metal building? Let’s talk.

03/01/2025

Check out Ryan S’s post.

03/01/2025

Give us a call for your spray foam and blown in insulation needs, we’re located in Decatur Nebraska and will serve a large area 402-260-9963