Expanded polystyrene foam

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Expanded polystyrene foam Similar to the white foam that coffee cups are made of, this material serves as an insulating core option for stresskin panels. Polystyrene foam is versatile since it can be manufactured in a variety of thicknesses that in turn determines the panel's R-value or resistance to heat flow. Girt – Framing timber, often 6" x 8" in dimension that connects bents together at the post. Girts typically have knee braces joined into them from the post.