To help develop this article, click ‘Edit this article’ above.
A wall plate is a load-bearing structural member used horizontally and part of a timber framework.
In the UK, the term typically refers to a length of timber bedded on mortar on top of the internal leaf of an external cavity wall. This provides a fixing point for the feet of rafters, and distributes the load exerted by the roof structure down through the walls without creating pressure points where each rafter meets the wall, and also acts to prevent wind uplift.
Generally, wall plates are in lengths of not less than 3m. As the mortar does not bond the wall plate to the wall, steel straps are used to ensure that the roof structure remains secure. These are typically 1.2m long with a cranked end and are fixed to the wall plate at 2m centres. If the strap is not turned into a bed joint, it should be fixed to the wall with at least four screw fixings.
 Related articles on Designing Buildings Wiki
- Domestic roofs.
- Cavity wall.
- Flat roof.
- Roofing defects.
- Roof insulation.
Featured articles and news
Eleven Magazine announce the winner and runners-up in their Moontopia competition.
As January is the time for hitting the gym, Designing Buildings Wiki lists the best gym architecture in the world.
London is at the top of the list of global construction megacities, beating Dubai and Abu Dhabi.
What are the innovative business models of the future, and how to incentivise supply chains to work on a whole life basis?
One of the largest churches in the world, the monumental St. Peter's Basilica.
How thermal comfort is quantified and how it can affect wellbeing.
Snøhetta complete a treehouse cabin that allows guests to lie beneath the Northern Lights.
Christiania is an anarchist 'freetown' in Copenhagen where strange and experimental architecture has flourished.
“UK waste data needs improving” say BRE specialists, in this summary of their report into construction waste.
UandI announce new joint venture with US developer to work on office refurbishment projects.
Why buildings crack, how cracks are categorised and what can be done.
Inaugurated last week, the new Elbphilharmonie concert venue; a soaring new addition to Hamburg's skyline.