Window installation with exterior insulation is a challenge. Solve the problem with ThermalBuck.

 : ThermalBuck in Three Minutes

ThermalBuck extends the mounting point for windows & doors, and insulates the rough opening to limit thermal bridging. 

Product Sizes & Dimensions

ThermalBuck outperforms a traditional wood buck, and protects the integrity of your window installation. 

Testing & Technical

PHIUS Verified Psi-Install Data:
Alpen 925 Zenith Nail Fin Installation
with ThermalBuck.

Thermal Bridge Coefficients

News & Events

Energy Efficiency is a Necessity for Habitat August 29, 2018

Habitat for Humanity’s vision is simple:  A world where everyone has a decent place to live. It’s achieving it that’s the complex part. The team at the Central Vermont Habitat for Humanity (CVHFH) is working hard towards that goal, and an even loftier one – building one of the highest… Read more

ThermalBuck Now Available Through Boise Cascade August 1, 2018

BRINC Building Products, Inc. has expanded ThermalBuck distribution in the Greater Northeastern U.S. through Boise Cascade, a leading wholesale distributor (and manufacturer) of building materials for more than 50 years. What started as a merger between two lumber companies back in 1957, Boise Cascade has grown into a powerhouse in the… Read more

ThermalBuck in Three Minutes

Watch this quick overview to show you how simple the ThermalBuck installation really is. It takes you through the basic steps from the Simple Installation Guide to install ThermalBuck. You’ll see how easy it is to get ThermalBuck installation right, window after window.

For more detailed versions of each step, watch the complete Step-by-Step Installation Series, including tips on cutting and how to integrate the WRB here.