Roofdeck Extension Legal?
I would like to replace an existing cedar deck on the extension roof of my brownstone. I would like to install a new cedar deck. I’ve had conflicting advice about the legality of this. My question is, would replacing the existing, cedar roof deck in this location with a new one of the same material…
I would like to replace an existing cedar deck on the extension roof of my brownstone. I would like to install a new cedar deck. I’ve had conflicting advice about the legality of this.
My question is, would replacing the existing, cedar roof deck in this location with a new one of the same material be legal or illegal? That is, would it be consistent with the applicable NYC building code– (I’m not sure if the “old rules” or the “new rules” apply in this situation)–or not?
Thanks for any advice.
My understanding is that a deck made from combustible materials can only cover 25% of the roof area. Cedar would definitely count as combustible – sometimes people try to argue that ipe isn’t, but I don’t think DOB buys the argument. I also expect that you can only deck 25% of the extension roof and a separate 25% of the actual roof deck. I doubt you can pool the total roof area. You can do tile, if the structure will support…
If it was and you can prove that it was legal before then you shouldn’t have a problem otherwise it will have to comply with current codes
Also, if in a city historic district, subject to review by the Landmarks Preservation Commission.
In general, roof decks are limited in size if combustible. Do you know if a permit was ever pulled for it? If you want call me and I will look into it for you.
Jock deBoer, AIA
deBoer Architects