Roof Structure

What Is a Truss?

A truss is an engineered roof framing assembly made from connected members that work together to support the roof.

Understanding Trusses

Truss: A truss is an engineered roof framing assembly made from connected members that work together to support the roof.

Published: June 5, 2026 Reviewed: June 5, 2026 Updated: June 5, 2026 By Exterior Echelon

A truss is an engineered roof framing assembly made from multiple connected wood members. The pieces work together to support roof loads and transfer them through the structure of the home.

Why It Matters

Trusses are designed as complete assemblies. Cutting or modifying one part of a truss can affect the way the whole system performs, even if the change looks small.

Common Problems

Common problems include truss members cut for storage, plumbing, wiring, or attic access; damaged connector plates; moisture damage; and homeowners assuming trusses can be altered the same way as ordinary framing.

Building Codes & Industry Standards

Trusses are engineered components and should be installed, braced, and modified only according to the truss design, manufacturer guidance, engineering direction, and applicable code requirements.

Exterior Echelon Notes

Exterior Echelon treats truss concerns carefully. During roof work, visible truss damage or improper alterations should be documented and reviewed before assuming the roof surface alone is the issue.

Roof trusses inside a residential attic
Trusses are engineered assemblies that support roof loads through connected framing members.

Continue learning with connected glossary definitions.

Glossary Note

This glossary is provided for general homeowner education. Actual roofing, siding, gutter, window, and exterior remodeling conditions should be evaluated by a qualified contractor before making repair, replacement, or insurance claim decisions.

Frequently Asked Questions

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