Nailer

Definition

A nailer is a piece of treated wood blocking, usually a 2" × 4" or 2" × 6", fastened to the roof deck, roof edges, wall transitions, or parapet wall tops. It is used for sleepers, coping, or perimeter edge membrane attachment.

Purpose

The primary purpose of a nailer is to provide a secure and stable surface to which other construction materials, such as roofing membranes or metal flashings, can be attached. Nailers are essential in ensuring the integrity and stability of roof edges, transitions, and other critical points in a roofing system.

Examples of Use

• Roof Decks: Nailers are installed on roof decks to attach perimeter edge membranes or metal flashings securely.
• Wall Transitions: They are used at wall transitions to provide a stable base for attaching transition flashings and other materials.
• Parapet Walls: On parapet walls, nailers support coping and other roof edge treatments.

Related Terms

• Roof Deck: The structural surface of a roof to which roofing materials are applied.
• Coping: The protective cap or cover on the top of a wall, parapet, or chimney.
• Sleeper: A support piece for roofing or flooring, typically laid flat on the underlying structure.

Notes

• Treatment: Nailers are often treated to resist moisture and decay, ensuring longevity and performance in outdoor environments.
• Size and Placement: The size and placement of nailers must be carefully planned to ensure they provide adequate support for the roofing materials and meet building codes.