Mitre Plates

A mitre plate is a type of pre-formed metal connector or bracket designed primarily to reinforce and strengthen a 45 degree mitre joint, which is an inherently weak joint in construction and woodworking.

Uses in Structural Construction

In building and roofing, mitre plates are highly engineered steel connectors.

• Primary Application: They are most commonly used to secure the connection between creeper trusses (or jack trusses) and the hip truss in a hip-end roof frame. This joint is where the plate fits snugly.
• Material and Design: They are made from formed, pre-punched galvanised steel to resist corrosion and provide high structural capacity against wind uplift and vertical loads.
• Functionality: They are often factory-bent to the precise angle and are available in left-hand and right-hand versions (like the Pryda MT15 set) to ensure the creeper truss is secured from both sides of the hip truss. The plates are fixed using nails through pre-drilled holes.

Uses in Woodworking and Framing

In smaller-scale projects like picture framing, "mitre plate" can refer to two different items:

1. Reinforcement Plates: Small, flat metal brackets applied to the back of a finished picture frame to provide extra mechanical strength to the corner joint (formed by two 45 degree wood cuts). These complement the adhesive or V-nails holding the frame together.
2. Clamping Tools: The term is sometimes used to describe a specialized component of a clamping jig or a corner clamp used to hold the two mitered pieces perfectly square(90 degree) while the glue is setting. These tools ensure a clean, gap-free joint face.

Canterbury Timbers has wide range of mitre plate. If we don't have it, Canterbury Timber can source it for you. Talk to our experts for DIY advice and construction project knowledge. Canterbury Timber offers competitive Trade Prices on Timber and Building Supplies.

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