EPS is used as a siding underlayment and sheathing that create a stable R-value energy barrier that is necessary on all frame-type construction.

Siding underlayment is available in different sized sheets, tailored to your individual needs. Siding underlayment top quality Expanded Polystyrene with durable film facings, which makes the surface entirely moisture resistant for your structure. Siding Underlayment is a sheathing and stucco board that offers incredible insulation that features higher compressive strengths, R-values, and greater moisture resistance.

For more information about the sheathing and siding underlayment products we carry, be sure to contact us at Northwest Foam Products, Inc. today!