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

ThermalBuck high-performance window buck with Dap Dynaflex 800 sealant
JLC LIVE Building Clinic to Feature ThermalBuck March 12, 2019

It’s time – the countdown begins. The biggest building show in the Northeast, JLC LIVE  kicks off in downtown Providence, RI March 27th – and this year, exhibitor ThermalBuck joins Rockwool, DuPont, and 3M as part of Bill Robinson’s building clinic, “Managing Moisture in Walls with Continuous Insulation”. JLC LIVE… Read more

Building a Better Mousetrap: The Development of ThermalBuck February 25, 2019

People often look at ThermalBuck and ask, “How did you come up with this idea?” Like any good idea, it starts with figuring out you’ve got a problem in the first place. And that’s exactly how this whole process began. John Brooks, developer of ThermalBuck, built his family an extremely energy-efficient,… Read more