Timber roof

Glossary

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A comprehensive guide to the most common timber terms.

Nail Laminated Timber

Nail-Laminated Timber (NLT) is an engineered wood product composed of dimensional lumber boards nailed together, typically used in floors, roofs, and walls for commercial and institutional buildings.

Nail plate connector

A nail plate connector (also known as a gang nail plate) is a stamped steel plate with embedded nails or teeth that mechanically fix timber members by being pressed or rolled into the surface, forming a strong, rigid joint.

Nail plate truss

A nail plate truss is a structural framework made from timber joined at the joints using metal plates with embedded nails or teeth, which are pressed into the timber to form strong, rigid connections.

Nail ring

A nail ring or ring shank nail is a mechanically fastened nail with circular grooves around the shank that provide extra grip when driven into wood.

Nogging

(also known as a nog, dwang in New Zealand, or blocking in North America) is a short, horizontal bracing member placed between framing elements (such as studs or joists) to provide lateral support, reduce movement, and improve the stiffness and stability of the structure.

Nosing

Nosing is the rounded, beveled, or squared front edge of a stair tread that extends slightly over the riser, improving both safety and aesthetics.