Thermal Clip for Exterior Wall Assemblies

The path to ASHRAE 90.1, NECB or SB10 compliance

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Next generation performance

The ISO Clip is a thermal barrier separating the interior of the building from the exterior framing components. Unique design features reduce the thermal transfer from the interior to the exterior. Thermal performance of the clip has been verified by the industry leaders, Morrison Hershfield. The ISO Clip is engineered to perform on all substrates; including concrete, concrete block, steel studs or wood. One ISO Clip can accommodate a variety of insulation thicknesses or wall depths, eliminating the need for shims or multiple clip sizes. The ISO Clip is designed to accept either vertical or horizontal sub-girts. Versatility and ease of use combined with the effective use of insulation makes the ISO Clip the product to specify. The ISO Clip team is available to assist you with all stages of your building performance design. Full sets of typical construction details, engineering load tables and calculations are available. Your engineers or ours, are able to design the most functional wall assembly for your chosen insulation and façade cladding.


  • 3D Thermal Analysis for SB10 and ASHRAE 90.1 * FEA Structural Analysis by JEI Engineering Evaluated for NFPA 285
  • Accommodates +/- 1⁄2″ adjustment for wall deviation
  • Fully Engineered
  • System support teams available to assist
  •  Acceptable for multiple substrates
  • Cost-effective
  • Allows for horizontal and vertical installations
  • One clip accommodates varying wall assemblies and insulation depths
  • Shims not required
  • North American Made and stocked regionally
  • Installer friendly with our “helping hand” feature
  • Currently modeled/assessed for 4″, 5″, 6″ of insulation

Why use ISO Clip

  • One component clip with integral moulded thermal pad
  • Robust
  • Same clip applied horizontally or vertically
  • Girts can be pre-assembled to the ISO Clip for faster field installation
  • Less inventory to stock
  • One source purchasing for your clips, girts and fasteners
  • Increased availability throughout distributor stockists

Morrison Hershfield report

The ISO Clip provides a thermally broken and intermittent structural attachment for cladding systems to exterior wall assemblies. The clip is fabricated from Z-275 galvanized steel, and over-molded with a plastic isolator. Both horizontal and vertical steel girts can be attached to the ISO Clip, as shown below in Figures 1 & 2. The horizontal flange of the clip has a punched slot that allows the sub-girt to be adjusted and fastened to the clip. The plastic isolator between the metal clip and the wall provides a thermal break that reduces thermal bridging. For steel stud assemblies, the clips are fastened through the exterior sheathing directly to the steel studs using self-drilling screws.

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For exterior insulated steel stud assemblies, the ISO Clip System provides an effective means of reducing thermal bridging in exterior façade systems compared to traditional continuous girt systems. The ISO Clip System can be used to meet many of the demanding thermal requirements from current energy codes and standards in Canada. The U- and R-values provided by this summary can be used for compliance calculations for any of the compliance paths set forth in ASHRAE 90.1, NECB or SB-10.thermal bridging. For steel stud assemblies, the clips are fastened through the exterior sheathing directly to the steel studs using self-drilling screws.


Vertical and Horizontal

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Thermal & Load Charts

Clear field thermal performance exterior insulated steel stud assembly

HORIZONTAL SYSTEM 16” STUD SPACING 4 16.8 (2.96) R-16.4 (2.88) R-17.2 (3.02) R-17.7 (3.12)
5 21.0 (3.70) R-18.7 (3.3) R-19.8 (3.5) R-20.6 (3.64)
6 25.2 (4.44) R-20.9 (3.67) R-22.3 (3.93) R-23.4 (4.12)
HORIZONTAL SYSTEM 24” STUD SPACING 4 16.8 (2.96) R-17.1 (3.01) R-17.8 (3.13) R-18.2 (3.21)
5 21.0 (3.70) R-19.7 (3.47) R-20.7 (3.64) R-21.3 (3.75)
6 25.2 (4.44) R-22.0 (3.87) R-23.3 (4.1) R-24.2 (4.26)
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Installation Guide

Please watch our installation video and download the Installation Best Practice Guide to learn more.

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Off the shelf from regional distributors

Just as important as all of the benefits and reasons for using the single versatile ISOClip, is it’s availability. Now that you have chosen ISOClip you want it in a reasonable time frame especially for imminent or on-site projects…we get it! We are building a network of regional distributors across North America for quick access to limited local stock and for larger quantities or bulk project orders on a reasonable lead time to meet your project schedule. For inquiries or quotation please use the following form.

Contact Us

To receive more information, CAD details, load span tables, samples or to request a quotation, please fill out the following form to be contacted by a representative. You can also contact us at 1-844-740-2050.