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.

Wall-Bracing-Length Calculator

Simpson Strong-Tie developed this quick and easy tool to help calculate the required length of wall bracing in accordance with the IRC. The tool provides printed output of the bracing requirements along with a summary of input information and factors used in the calculations.

Best Practices


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

ICC Guide to the 2018 IRC Wood Wall Bracing Provisions

Wall bracing is a common source of confusion and misapplication although it is of critical importance when designing, performing plan review, building or inspecting a structure. This full-color illustrative guide was developed to help building designers, builders, building officials and others using the code in the application of the lateral bracing requirements of the 2018 International Residential Code® (IRC). The authors identify and explain the key elements of wall bracing and demystify the IRC prescriptive bracing provisions.

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 

Connector Solutions to Meet the Wall Bracing Requirements of the International Residential Code

This Simpson Strong-Tie technical bulletin is for use with the 2012, 2015 or 2018 International Residential Code (IRC). It provides information about the Simpson Strong-Tie products that meet the connector and anchorage requirements for braced wall panels constructed in accordance with IRC Section R602.10.4