Holey-Board is one of Dyplast Products' preeminent EPS (expanded polystyrene) products, used in lightweight concrete roofing applications. Holey-Board is energy-efficient, cost-effective, durable, and long-lasting. Holey-Board is the preferred choice for insulated concrete roof decks since it is lightweight yet sturdy enough for the most demanding job. It can be easily sloped to ensure maximum drainage, and its unprecedented low moisture absorption inhibits warping cracking and buckling. With a wind uplift rating of 150 mph Holey-Board meets Miami-Dade building code requirements.
Holey-Board is available in a wide variety of thicknesses, anywhere from 3/4" to 40".