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What is the Required Fire Rating for a Room above a Garage? PDF Print E-mail
Friday, 05 March 2010


Jan sent us the following question:

I want to convert the attic above my garage to a study. What is the required fire rating for the suspended floor / ceiling combination between the two rooms? I have been given two answers so far: 30 minutes is the normal reguirement but for a room above a garage it should be 60 minutes. This second rating is not sure. Can you perhaps help me with the facts?

Les responds as follows:

The required fire rating for a division between a garage and a room above it is 60 minutes. (See SABS 0400 - TT6.2) If your access to your proposed study is from inside the garage then this situation changes and you would need fire rated door closing off access either at the bottom or the top of the stairs.

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If access is from outside then there is no problem. A 30 minute fire rating is normal for occupancy H4 (Domestic occupancy) but TT6.2 applies to rooms over garages.

Just a tip. There are a number of things to look out for by way of sound proofing a timber floor. You can give me a call if you want a good specification.

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