A building’s façade is normally the largest surface area between its internal and external environment – where a great amount of heat loss can occur. Thermal insulation of the external walls from the outside is an efficient way of protecting against thermal energy loss.

Exterior Insulation and Finish Systems (EIFS) are non-load bearing exterior wall cladding solutions that incorporates exterior continuous insulation, with a cladding that allows architects and contractors added design flexibility and a variety of aesthetic finishes, while helping to meet increasingly more stringent energy codes.

Consisting of a WRB, insulation board, fiberglass mesh, reinforced base coat, and a finish coat, EIFS assemblies must meet stringent test standards for compliance with the appropriate building codes and standards in the U.S. and Canadian markets. Installation of these systems shall be in accordance with the EIFS manufacturer’s instructions.

ROCKWOOL is a proud member of both the EIFS Industry Members Association (EIMA) and the EIFS Council of Canada.

As a global organization with more than 25 years of experience in exterior insulation and finish systems, ROCKWOOL North America is proud to offer non-combustible stone wool insulation optimized for mechanically-attached EIFS.”

Ryan Martin, ROCKWOOL Product Manager

Frequently Asked Questions


These EIFS utilize ROCKWOOL Frontrock, a noncombustible stone wool insulation as the substrate for the lamina, are drainage compliant with the 90% efficiency required per ASTM E2273.

Meeting the requirements within ASTM E2568 as outlined by both the International Building Code (IBC) and International Residential Code (IRC), these systems benefit from proven impact resistance, dimensional stability for reliable long-term thermal performance, and increased acoustical comfort. See below for a list of systems that have approved the use of ROCKWOOL Frontrock.

Dryvit Outsulation
Outsulation Mineral Wool System
Sika | Master Building Solutions
Senergy Senerflex Vulcan NC
Finestone Pebbletex Vulcan NC
Engine 16 Case Study, New York


The following EIFS manufacturers have developed systems that incorporate noncombustible ROCKWOOL stone wool insulation and allow for the drainage of incidental moisture. For additional information and component availability outside of insulation materials please contact the EIFS manufacturers.

DuROCK Alfacing International
Durabond Products
Equalite & Equalite Select
ADEX Systems
Dryvit Systems
Exsulation S5000
Senerflex Vulcan NC
Les Enduits STEF Inc.
Premium I & Supra
Ken Soble tower

  Project Image: Ken Soble Tower
  Supplied by DuROCK Alfacing International

Case Studies

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