Dryvit EPS (Expanded Polystyrene) is a key component in most of Dryvit’s Outsulation systems. It is an integral part of the system and provides the continuous insulation (CI) necessary to meet the demanding Energy Codes present in today’s construction world. Dryvit EPS is available in various thicknesses, starting at 1” all the way up to 13” (see specifications for further information on thickness requirements). The R-value of 1” of EPS is 3.85. Questions? Contact Us.
3.1 Description of terms specific to this specification.
3.1.1 Dryvit Exterior Insulation and Finish System (EIFS) – a nonload bearing exterior wall cladding system consisting of an insulation board, an adhesive and/or mechanical attachment of the insulation board to the substrate, an integrally reinforced base coat on the face of the insulation board, a protective finish applied to the surface of the base coat and applicable accessories that interact to form an energy-efficient exterior wall.
3.1.2 EPS – Expanded Polystyrene Insulation Board, which is affixed to the substrate and creates a layer of continuous insulation.
3.1.3 PB System – a class of EIFS where the base coat varies in thickness depending on the number of layers or thickness of reinforcing material. The thickness can range from a nominal 1/16 in (1.6 mm) to 1/4 in(6.4 mm). The reinforcing material is typically glass fiber mesh, which is embedded in the base coat at the time of installation.
3.1.4 PM System – A class of EIFS where the reinforcing material is typically glass fiber mesh, which is applied over the insulation board and mechanically fastened to the substrate. The base coat is applied over the reinforcing mesh at a nominal thickness of 3/16 in (4.8 mm) to 1/4 in (6.4 mm) and contains fiber reinforcement.
This specification covers Type I Expanded Polystyrene Insulation Board (as defined by ASTM C 578) intended for use in Dryvit Exterior Insulation and Finish Systems (EIFS).
This specification covers the type, physical properties and dimensions of Expanded Polystyrene Insulation Board intended for use in Dryvit Exterior Insulation and Finish Systems (EIFS).
1.2 The use of the Expanded Polystyrene Insulation Board covered by this specification is regulated by building codes.