What is high density EPS?

High Density (HD) Envirosheet is a high density economical foam board insulation made from Expanded Polystyrene (EPS) offering a high R-value per dollar. It is a highly durable and cost-effective product that is primarily designed to be used for below grade applications for residential or commercial construction.

Is EPS foam waterproof?

While polyiso, XPS and EPS have some of the strongest waterproofing properties of all insulations, EPS is the weakest of the three and absorbs more water. EPS is also susceptible to crumbling on the edges.

Is EPS foam safe?

Expanded Polystyrene (EPS) or Styrofoam, is a petroleum-based non-biodegradable foam, which the EPA and International Agency for Research on Cancer consider styrene a “possible human carcinogen” and “that such materials can have serious impacts upon human health, wildlife, and aquatic environment, and the economy.”

Is EPS foam flammable?

As with many other construction materials, EPS is flammable. In all cases, this is only relevant if EPS is evaluated as an exposed insulating material. When a building functions under normal temperature conditions in its daily use, flammable materials and the atmospheric oxygen are naturally in a state of equilibrium.

Is EPS carcinogenic?

Pentane is used during the manufacture process as a blowing agent. Pentane releases no CFC’s or HCFC’s. Therefore, no toxic substances or gases are used or produced in the manufacture of EPS. Expanded polystyrene is stable, non carcinogenic and does not degrade so there is no pollution.

Is EPS flammable?

EPS is flammable, as is the case with so many other building materials. However, this is only relevant if you assess EPS as an exposed insulating material.

Does EPS need a vapor barrier?

A: No, although EPS has a low water vapor transmission rate, EPS is not a vapor barrier. Rather it “breathes”, and therefore does not require costly venting as do other insulation materials, which would otherwise trap moisture within walls and roof assemblies.