What are restraint straps and how to use them
Restraint straps, also known as tension straps and bat straps, are used for vertical and horizontal restraint of roof and floor structures to prevent bulging and cracking of walls. This happens when walls move slightly sideways due to repeated wind pressure. Therefore, it’s important to have rigorous vertical and horizontal restraint of walls.
At Speedy Fixings, we have available a large selection of heavy-duty restraint straps and light-duty restraint straps, including heavy-duty stainless steel restraint straps and light-duty stainless steel restraint straps. Heavy-duty restraints are ideal for lateral restraint of roof rafters, trusses and joists tied into masonry walls, whilst light-duty restraints are suitable for vertical loads, including wall plates on top of masonry walls.
When to use restraint straps.
For solid or cavity wall types of any length, roof lateral support is required, and if the wall length is greater than 3 metres, floor lateral support is also necessary. Both of these wall lengths require roof and floor restraint straps installed at any junction with the supported wall.
For internal load-bearing walls of any length, roof or floor support is required at the top of each storey.
As Part A of the Building Regulations mentions, walls should be strapped to floors above ground level at intervals not exceeding 2 metres plus, vertical strapping with at least 1 metre in length should be provided at eaves level at intervals not exceeding 2 metres. If you require further information about lateral restraint for your property, view the current Building Regulations requirements.