Joist hangers: 47 is the new 50 – have you switched yet?

Joist hangers

To build safer, stronger structures requires more than just top quality joist hangers; equally important is choosing the correct size

Regularised timber is now the UK standard, which means 50mm joist hangers are yesterday’s news. Unlike rough sawn timber, where the width of a joist can be anything up to 50mm, regularised timber is planed down and the edges rounded for consistency, so regularised timber is always 45mm.

Simpson Strong-Tie knows that size matters! Regulated hanger sizes have long been offered across its  hanger ranges.

‘Offering a correct, secure fit’

Steve Allen, national builders merchant sales manager at Simpson Strong-Tie, said: “Our 47mm range provides the correct, secure fit. Using 50mm wide hangers leaves a gap between the hanger and the joist, which not only requires structural packing in order to meet regulations, but can still result in twisting timber and squeaky floors.

“The wider the hanger, the more important it is to use regularised sizing – and Simpson offer it as standard. We have 47mm hangers for singles joists, 91mm for doubles and 137mm for triple joist applications.

“Hanging two regularised joists in a traditional 100mm wide hanger results in a gap of 10mm, and three joists in a 150mm hanger means a 15mm gap to pack!”

47 is the new 50 – have you switched yet?

For over 60 years, Simpson Strong-Tie has focussed on creating connectors that perform under the toughest of conditions, helping the industry build safer, stronger homes and buildings. With more than 1,000 product solutions, it offers the widest connector range in Europe.


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