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Roof frame

in Glossary

The roof frame is the load-bearing framework of a pitched roof. It carries its own weight, the roof build-up and wind and snow loads, transferring them into the building through walls, columns or floors.

What is a roof frame? Function and classification

Depending on the structural system, rafters, purlins, collar beams, paired tie beams, braces and connectors work together. The roof frame determines the roof’s shape, span and load transfer.

Practical use

After design and timber framing preparation, the components are erected, aligned, connected and braced. Alterations or cut-outs are only carried out after structural assessment.

Build-up and system variants

Typical systems include rafter roofs, collar-beam roofs, purlin roofs and combinations. They differ in support arrangement, span, use of interior space and assembly sequence.

What should be considered in practice?

Not every visible timber component may be removed, drilled or notched. Moisture, missing bracing and improper alterations can impair load-bearing capacity.

Related terms in the roofing glossary

Tags: Holzbau & Tragwerk
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