JamesP

Building Control and fire rating.

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Can anyone advise,

Have a single storey vaulted ceiling kitchen, dining room which has OSB on the inside (Warm roof). Our plan is to finish with sheets of  8x4 plywood.

Do I have to fit plasterboard first?

The BC mentioned the kitchen ceiling requires National Class 1 for surface spread of flame rating. BC also mentioned using fire retardant varnish.

Does the plywood need fire rating as well?

 

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Just found this, I even made a a post.....

 

Edited by JamesP

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The plywood will need a fire retardent coating.  That is probably what he means.

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We are also having a wooden ceiling 

bc told me as no rooms above, the coating needs to be to stop spread off flame

not necessarily fire proof. 

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