If a window isn’t installed properly, it won’t matter how energy efficient it is.
Installing windows on a building with exterior insulation isn’t easy. The window and the rigid foam or mineral wool need to line up on the same plane for good drainage, proper cladding attachment, and to prevent compression of the insulation. Rough openings have always been the weakest spot on any building for air and water infiltration, and “bumping” the window out only makes it more difficult to achieve a good air and water seal.
Traditionally a wood buck is built to extend the mounting point of the window to create a flush plane. But wood can rot, warp, and shrink over time. Wood is a poor insulator, allowing thermal bridging around each window and door. Not only does it reduce the energy efficiency of the building, it causes condensation to form, and potential damage from moisture – which can lead to extensive repairs.
ThermalBuck solves the challenge of installing nail flange windows & doors with exterior insulation by extending the mounting point to create a flush plane for cladding. It also insulates the rough opening, limiting thermal bridging around windows & doors.
Coated with a waterproof resin and secured to the rough opening with an air & water barrier sealant* and nails, it’s simple to install and easier to flash than a wood buck. Dimensionally stable and strong, it will not warp, rot, or shrink, and helps to support the weight of the window. ThermalBuck outperforms a traditional wood buck, and protects the integrity of your window & door installation.
The continuous insulation solution for the high-performance building envelope.
*We recommend ThermalBuck installation with DAP Dynaflex 800 Modified Polymer Sealant or Dow Corning 758 Silicone Sealant
For information about scheduling a ThermalBuck installation demo in your area email us: firstname.lastname@example.org
ThermalBuck Goes Rogue with Matt Risinger
Matt Risinger is a well-known talent in the building industry. Not only for his fine craftsmanship as high-end home-builder Risinger Homes, but also as a building science expert and educator.
Based in Austin, Texas, Matt appears at building events and trade shows across the U.S., and creates easy-to-follow, real-world content from his construction sites (that’s a lot of fun to watch) for his avid followers on social media.
Matt recently featured hosted a demo in Austin, “Hands-On Building Science: Window Installation with Exterior Insulation” featuring ThermalBuck on Risinger Goes Rogue, as a smart, simple solution to the challenges builders face when installing windows with continuous insulation.