Fire Treated / Resistant Plywood as Roof Sheathing
Fire Treated / Resistant Plywood as Roof Sheathing
(OP)
Does anyone know limitations of using fire treated plywood as non structrual sheathing on a roof?
An architect is saying he needs to use plywood on top of my structural metal deck/metal trusses in order to fasten his roofing. He says the sheathing must be fire treated. I've never used a system like this and dont know if it'll eat the deck, etc. Looking on APA, there isnt much info about it.
An architect is saying he needs to use plywood on top of my structural metal deck/metal trusses in order to fasten his roofing. He says the sheathing must be fire treated. I've never used a system like this and dont know if it'll eat the deck, etc. Looking on APA, there isnt much info about it.





RE: Fire Treated / Resistant Plywood as Roof Sheathing
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RE: Fire Treated / Resistant Plywood as Roof Sheathing
RE: Fire Treated / Resistant Plywood as Roof Sheathing
RE: Fire Treated / Resistant Plywood as Roof Sheathing
RE: Fire Treated / Resistant Plywood as Roof Sheathing
RE: Fire Treated / Resistant Plywood as Roof Sheathing
There is nailable insulation that allows the attachment of other materials.
For fire treated plywood, you have to go to treaters web site or get information directly from them. Plywood manufacturers don't do the treating.
The treatment does affect the structural properties of the plywood, but I am not sure about how it affects attachments or metals in contact with it.
RE: Fire Treated / Resistant Plywood as Roof Sheathing
You can use "Deck Mate" screws by Phillips Fastener Products as one solution in FRT lumber, for others go to www.treatedwood.com for listings of other products.
RE: Fire Treated / Resistant Plywood as Roof Sheathing
In a code seminar I recently attended I heard of a townhouse project (somewhere on the East coast? can't remember) where the attics where not properly ventilated and the rot required a complete re-building of the roof sheathing after something like 5 to 7 years.
A quick google search on the subject turned up;
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Of course this might be more an 'architectural' issue, but you might want to consider it in your design.