UL and Concrete Masonry
A building official is requiring a UL lable the block I am using. The producer is saying UL lables on masonry units are not available in Florida. What is going on?
The question on whether masonry units can be required to carry a UL lable has been around for many years. The answer your producer gave is the correct one - UL labled block are not available in Florida. Additionally, your Building Official cannot require one (your architect CAN require it in his specification - but he will pay the price). Your Building Official MUST accept block manufactured under Section 722.3 of the 6th Ed. FL Building Code, Building. This section specifies the fire rating of a concrete masonry unit by aggregate type and equivalent thickness.
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Jerry Painter, FASTM
Don Beers, PE, GC
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