Images are representations only.

ThermalBuck

Brand: Thermal Buck™

The ThermalBuck is an innovative high-performance window and door buck designed to extend the building’s insulation layer right to the rough opening. Made from a high-density, closed-cell foam core with a waterproof coating, it eliminates thermal bridging, improves energy efficiency, and protects against moisture damage.

ThermalBuck is lightweight, easy to cut, and installs quickly, making it a practical solution for high-performance construction. It’s compatible with all types of cladding and integrates seamlessly with weather barriers and flashing systems.

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.
 
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.

Features

  • Extends the mounting point of windows & doors to meet the exterior insulation and/or rainscreen plane.
  • Acts as a flashing agent, creates a complete water & air barrier when mounted with recommended sealants.
  • Insulates the mounting point of windows & doors 4x more than wood window bucks.
  • Limits thermal bridging, with an R-value range of 4.4 to 17.6.
  • Prevents condensation, reduced thermal bridging means less moisture, mold and mildew.
  • Handles shear and wind loads up to 70 lbs per linear inch.
  • Sustains hurricane force winds with minimal permanent compression (compressive strength of 52 psi).
  • Allows structural attachment of windows & doors (must penetrate structure min. 1-1/4″).
  • 1/16″ integrated sill pan for good drainage.
  • Dimensionally stable and elastic. ThermalBuck won’t warp, shrink, or expand like wood window bucks. 
  • Energy-efficient, reduces the amount of natural resources needed to heat and cool year-round.
  • Improves Indoor Air Quality by preventing condensation.
  • Helps maintain the long-term operating ease of windows & doors.
  • Lightweight, flexible, durable and strong, ThermalBuck is easy to work with and install with one person.
  • Simplifies the installation of windows & doors.
  • ThermalBuck outperforms wood window bucks, and is easier to flash properly, window after window
show more

The ThermalBuck is an innovative high-performance window and door buck designed to extend the building’s insulation layer right to the rough opening. Made from a high-density, closed-cell foam core with a waterproof coating, it eliminates thermal bridging, improves energy efficiency, and protects against moisture damage.

ThermalBuck is lightweight, easy to cut, and installs quickly, making it a practical solution for high-performance construction. It’s compatible with all types of cladding and integrates seamlessly with weather barriers and flashing systems.

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.
 
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.

Features

  • Extends the mounting point of windows & doors to meet the exterior insulation and/or rainscreen plane.
  • Acts as a flashing agent, creates a complete water & air barrier when mounted with recommended sealants.
  • Insulates the mounting point of windows & doors 4x more than wood window bucks.
  • Limits thermal bridging, with an R-value range of 4.4 to 17.6.
  • Prevents condensation, reduced thermal bridging means less moisture, mold and mildew.
  • Handles shear and wind loads up to 70 lbs per linear inch.
  • Sustains hurricane force winds with minimal permanent compression (compressive strength of 52 psi).
  • Allows structural attachment of windows & doors (must penetrate structure min. 1-1/4″).
  • 1/16″ integrated sill pan for good drainage.
  • Dimensionally stable and elastic. ThermalBuck won’t warp, shrink, or expand like wood window bucks. 
  • Energy-efficient, reduces the amount of natural resources needed to heat and cool year-round.
  • Improves Indoor Air Quality by preventing condensation.
  • Helps maintain the long-term operating ease of windows & doors.
  • Lightweight, flexible, durable and strong, ThermalBuck is easy to work with and install with one person.
  • Simplifies the installation of windows & doors.
  • ThermalBuck outperforms wood window bucks, and is easier to flash properly, window after window
Close

Displaying prices & availability for Ohio, United States 43291 in CAD. Change location.

Models matching criteria: 8
BR004TB-10
THERMALBUCK 1.0 view more

ThermalBuck is an insulated window and door buck designed for use with continuous exterior insulation. It extends the rough opening to the exterior face of the insulation, providing a durable surface for window installation while helping maintain continuity of the building's thermal and water-management layers.

The 1.0" profile is designed for assemblies incorporating approximately 1" of continuous exterior insulation.

Add-Ons Tremsil 400 Sausage
100+ In Stock
$49.99 CAD
BR004TB-30
THERMALBUCK 3.0
Add-Ons Tremsil 400 Sausage
50+ In Stock
$69.64 CAD
BR004TB-25
THERMALBUCK 2.5
Add-Ons Tremsil 400 Sausage
50+ In Stock
$65.43 CAD
BR004TB-35
THERMALBUCK 3.5
Add-Ons Tremsil 400 Sausage
25+ In Stock
$76.09 CAD
BR004TB-15
THERMALBUCK 1.5
Add-Ons Tremsil 400 Sausage
25+ In Stock
$50.76 CAD
BR004TB-40
THERMALBUCK 4.0
Add-Ons Tremsil 400 Sausage
3 In Stock
$78.70 CAD
BR004TB-20
THERMALBUCK 2.0
Add-Ons Tremsil 400 Sausage
Out of Stock
$61.77 CAD
BR004TT-15
THERMALBUCK Thermal Tight (4x8 sheets) 1.5" view more
THERMALBUCK:THERMALBUCK Thermal Tight (4x8 sheets) 1.5"
Add-Ons Tremsil 400 Sausage
Out of Stock
Close
Close

Specifications

Brand

R-Value at 75° F

  • 1" = 4.4
  • 1.5" = 6.6
  • 2" = 8.8
  • 2.5" = 11
  • 3" = 13.2
  • 3.5" = 15.4
  • 4" = 17.6

R-Value at 40° F

  • 1" = 4.8
  • 1.5" = 7.2
  • 2" = 9.6
  • 2.5" = 12
  • 3" = 14.4
  • 3.5" = 16.8
  • 4" = 19.2

R-Value at 25° F

  • 1" = 5
  • 1.5" = 7.5
  • 2" = 10
  • 2.5" = 12.5
  • 3" = 15
  • 3.5" = 17.5
  • 4" = 20

Compressive Strength (ASTM C165)

  • @ 10 % Deformation
  • 52.4 psi

Design Pressure (ASTM E330/E330M)

  • +203.01 psf
  • -203.01 psf
  • < 0.5 mm (0.02")
  • < 0.8 mm (0.03")

Structural Pressure (ASTM E330/E330M)

  • ± 300.76 psf
  • < 0.3 mm (< 0.01")

Water Penetration (ASTM E547)

  • 9.19 psf
  • Pass

Air Infiltration (ASTM E283)

  • 1.57 psf
  • 6.24 psf
  • < 0.01 cfm/ft²

Burn Test (ASTM E84)

  • Class A or 1 Fire Rating
  • FS< 25, SD< 450

Composition

  • Type XIV EPS with Polyurethane/polyurea Resin Coating - Contains termiticide
Close

Review this product and let us know your experiences

Write a Review
Close