Walls using foam sheathing can meet all structural code requirements with simple specification and planning.

Tools & Education

Window Installation in Walls with Foam Sheathing

There are many acceptable ways to mount and detail windows for support and weather resistance. This page provides window installation instructions based on research conducted on walls with continuous insulation.

Cladding Connections

The code compliant use of FPIS for energy code applications requires consideration of other factors such as appropriate methods for connection of claddings through FPIS materials of various thicknesses and various substrates.

IRC Wall Bracing: A Guide for Builders, Designers and Plan Reviewers

This guide provides designers, code officials and builders a basic understanding of how to apply the IRC bracing provisions for code-compliant dwellings and how the IRC bracing provisions can be used to create maximum value in a diverse housing market.

Best Practices


Standard Requirements for Wind Pressure Resistance of Foam Plastic Insulating Sheathing Used in Exterior Walls

Practical Research

NYSERDA Fastening Systems for Continuous Insulation

As energy codes continue to become more stringent, the thickness of continuous installation has increased. This report examines problems and solutions for fastening systems where thick foam is used. 

Additional Information

General Dowel Equations for Calculating Lateral Connection Values

This report covers calculation of lateral values for single dowel type fastener connections to wood framing using a generalized and expanded form of the NDS yield limit equations that allows for a 'gap' in the connection for foam sheathing. 

Polyiso - Insulation Types

Includes information on the compressive strength of Polyiso

EPS - Compressive Strength

Information on the compressive strength of several types of EPS 

XPS - Standards

Includes information on the strength properties of several types of of XPS