Kaida

New Member
Joined
Nov 10, 2025
Posts
3
Location
Utah
This might become my dumping ground for my build.

Anybody build their foamie with Insulfoam?

I'm planning to build a hi-lo foamie similar to the build below. Could Insulfoam R-7.7 2" thickness work for the bottom walls? Or would Owen Cornings Foamular NGX F-250 R-10 2" thickness be better?
1000012976.jpg
 
Insulfoam is expanded foam (XPS, think white beaded foam). Foamular is extruded foam (EPS) and is much better for structural uses. It's denser and stronger.

XPS is great for filling voids in skeletonized plywood or stick built hollow panels. Neither depends on foam for strength or compression resistance.
 

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