Exterior Insulation and Finishing System (EIFS)

Exterior Insulation And Finishing System (EIFS) is a general class of non-load bearing building cladding systems that provides exterior walls with an insulated, water-resistant, finished surface in an integrated composite material system. In Europe, systems similar to EIFS are known as External Wall Insulation System (EWIS) and External Thermal Insulation Cladding System (ETICS).

EIFS has been in use since the 1960s in North America, first on masonry buildings but since the 1990s the majority on wood framed buildings. There is a history of water infiltration problems causing damage to buildings resulting in costly legal cases, so the recommended systems include a drainage plane to let water drain down and out from behind the cladding.

EIFS installation

EIFS are typically attached to the outside face of exterior walls with an adhesive (cementitious or acrylic based) or mechanical fasteners. Adhesives are commonly used to attach EIFS to gypsum board, cement board, or concrete substrates. EIFS are attached with mechanical fasteners (specially designed for this application) when installed over house wraps (sheet-good weather barriers) such as are commonly used over wood sheathings. The supporting wall surface should be continuous (not "open framing") and flat.


External wall insulation systems generally comprise firstly an insulation layer (an element which helps to achieve the requisite thermal performance); and secondly, a protected weatherproof finish (usually a render, although brick slips, tiles, and decorative boards can also be used). Insulating render can also be an advantage in certain locations. Choice of types and sizes will depend on the substrate and design exposure requirements.
Dry finishes are usually fixed to the substrate by means of timber battens independently fixed to the substrate.
Any system selected and installed, should be certified by a notified body.

Wayne's Building Supply is a leading provider for the EPS that is used in this product. Please call us today for a free quote (740-332-0658)
EIFS Stud Wall Cutaway — Exterior Insulation and Finishing System (EIFS) in OH