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For many years the market for fire rated downlights has been highly confusing with many manufacturers making claims but not always having the technical data to back up these claims.
The NHBC has just launched new guidance to cover the use of fire rated downlights which makes it very clear that only correctly tested products can be used in the type of floor construction in which they are being fitted.
Specific reference is made to the type of joists being used as light weight joists are now the norm for many types of construction and these need different tests to the old solid timber joists.
http://www.nhbc.co.uk/Builders/Prod...uidanceDocuments/64/filedownload,84608,en.pdf
Take care to make sure what you are fitting is correctly tested.
The NHBC has just launched new guidance to cover the use of fire rated downlights which makes it very clear that only correctly tested products can be used in the type of floor construction in which they are being fitted.
Specific reference is made to the type of joists being used as light weight joists are now the norm for many types of construction and these need different tests to the old solid timber joists.
http://www.nhbc.co.uk/Builders/Prod...uidanceDocuments/64/filedownload,84608,en.pdf
Take care to make sure what you are fitting is correctly tested.