Class B roof covering??

[righter101]

I have a VA commerical structure.

Ch. 15 states I need a Class B roof covering.

Most of structure is metal panels.

There is a "roof deck", consisiting of joist, plywood over, then pvc membrane layer. On top of that they wish to put:

http://www.tiletechpavers.com/Pavers.html

I read the tech specs, don't see a "class rating by approved agency".

Does this qualify??

Thanks.

 

[mtlogcabin]

ROOF COVERING. The covering applied to the roof deck for weather resistance, fire classification or appearance.

The class B roof covering would be the pvc membrane layer. The "pavers" are concrete should not be a problem for fire but will the roof support the extra dead load?

 

[Examiner]

Sounds to me as if they are going to use the roof. If it is to be occupied a whole set of other issues arise. Why do they want to put pavers on the roof?

 

[peach]

Get out to the mechanical equipment? See it all the time when rigid foam is used as part of the insulation. Distributed load is a better way to maintain the rigid foam than point loads (feet).