Prebuck® Window and Door Buck

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Prebuck® Window and Door Buck

Engineered Support for Punched Openings

Prebuck® Window and Door Buck

Engineered Support for Punched Openings

The window and door bucks are produced with a 1-1/2" (38 mm) thick, borate-treated Laminated Strand Lumber (LSL) offering an engineered solution for punched openings. The buck frame can be used in combination with any wall structure type and is ideally suited for wide-width walls such as insulated concrete forms. The buck features a double dovetail keyway and optional metal flanges to ensure the frame stays in place during and after concrete placement.

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Benefits of Using Prebuck Window and Door Buck in Your Next Project

Treated LSL

Treated LSL product will not delaminate, become spongy, loosen fastener strength, cup, twist, warp or curl

Easy Installation

Self aligns on the wall and eliminates the need for additional anchors to the concrete which makes for easy installation

Direct Contact with Concrete

Designed for direct contact with concrete, this system seamlessly integrates the framing into ICF construction

Non-Corrosive

Non-corrosive to metals

Decay and Insect Resistant

Treated with zinc borate for exceptional resistance to insects and decay

Prebuck Window and Door Buck Is Best For

Concrete
Tilt-walls
Steel Stud
Insulated concrete forms (ICF)

Masonry block

Product Properties

ASTM D1037: Density	38
ASTM D1037: Product Moisture Content	6 to 8%
ASTM E518: Thermal Properties	1.25
ASTM E84: Flame Spread	140
AWPA Category 2: Use in Direct Contact with Concrete	Pass
Specific Gravity - Edge	.42

Prebuck Window and Door Resources

Download any of these featured resources or find a specific type of document below.

Data Sheet

Application/Installation Instruction

Architectural Specification

Product Literature

Frequently Asked Questions

Prebuck is manufactured from Laminated Strand Lumber (LSL) that is pressed and glued using MDI resin. This resin forms a plastic binder between the structural strands of lumber, providing an engineered framing solution designed to resist twisting, warping, and cupping.

Laminated Strand Lumber (LSL) is an engineered wood product. It is a structural composite formed by bonding thin parallel veneers together in large billets and cutting to dimension based on intended use.

Prebuck products come in standard lengths of 16' (4.88 m). Widths can be customized based on the design for the project. Prebuck also offers packages cut to length for window and door bucking.

To order Prebuck products for your project, click <a href="##">HERE</a> to contact your local Tremco rep or Nudura distributor. Or submit a Prebuck order inquiry using <a href="##">THIS FORM</a> or by calling 616.309.6256 during normal business hours, 8:30 am to 5:00 pm (ET).

Prebuck zinc borate treated option is approved to be used in accordance with AWPA Use Category UC2. This treatment allows Prebuck products to be used within the building envelope and in direct contact with masonry or concrete surfaces.

The zinc borate treatment used in Prebuck is non-corrosive; therefore, no specially coated fasteners are required.

Prebuck products treated with zinc borate must not be used in exposed exterior conditions or in direct ground contact applications.

Typical exposure during construction is expected. The product may discolor, and edge swelling is possible; however, the structural integrity is not compromised. Prebuck recommends care is taken to limit exposure to the elements and that coverings be applied within 6 months.

No, the zinc borate treatment is present throughout the cross-section of Prebuck and requires no further treatment to cut edges or other modifications made on-site.

Prebuck is made with MDI resin that produces a plastic coating over the structural strands of lumber. When exposed for periods of weathering and moisture the edges of the material may swell but are warranted against swelling more than 3/16” (4.76 mm). Length and width of the material will not change in dimension.

Prebuck Case Studies

Buchanan Elementary School

Buchanan Elementary School selected Prebuck's Parapet Caps to ensure a durable and sustainable design.

Church - Kalamazoo, Michigan

This church in Kalamazoo, Michigan chose Prebuck's bucking system that offered customizable options and an easy installation.

R Value Homes - Jenison, MI

To achieve the net-zero goal for this house, R Value Homes chose sustainable and efficient building solutions.

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Ready to order?

Submit a Prebuck order inquiry or call 616.309.6256 during normal business hours, 8:30 am to 5:00 pm (ET)

Order Inquiry

Prebuck® Window and Door Buck

Prebuck® Window and Door Buck

Benefits of Using Prebuck Window and Door Buck in Your Next Project

Product Properties

Prebuck Window and Door Resources

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Frequently Asked Questions

What is Prebuck made from?

What is laminated Strand Lumber (LSL)?

What dimensions are Prebuck products available in?

How do I order Prebuck products?

Is Prebuck designed to be used in direct contact with concrete?

Are special fasteners needed when working with Prebuck?

Can Prebuck products be used in contact with or below the ground?

How long can Prebuck products be left exposed during construction?

Do cut ends need to be treated after being cut on-site?

Will Prebuck swell?

Prebuck Case Studies

Buchanan Elementary School

Church - Kalamazoo, Michigan

R Value Homes - Jenison, MI

Discover Our Product Warranty

Need help finding the right product?

Ready to order?

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