Vented Roof Deck

Deck should not be specified as vented when it is not required.

Vented roof deck.

We have installed a metal deck for a roof system on which the engineer has specified a lightweight concrete composite system. We have installed a vented metal decking but the engineer has requested that solid metal decking be used. The requests for vented composite steel deck appear to be based on a desire to hasten the drying time of the concrete that is cast on the deck. Standard or cellular acoustic or vented interlocking or nested side laps b deck is among the most flexible of our 1 inch deep roof decks.

Some materials in the roof assembly may require venting of the steel roof deck such as roof systems with light weight insulating concrete. Type b wide rib structural roof deck is a high performance cost efficient choice with a variety of options to meet multiple project needs. In order to understand what the purpose of vented metal deck is we need to take a look back in history to when vented metal roof deck was necessary. Steel deck s institute this document has been prepared by the steel deck institute as a position statement in response to inquiries regarding the availability of vented composite steel floor deck.

Vent the roof deck. If the attic space is going to be conditioned either for living or mechanical purposes or if a home design calls for a vaulted ceiling provision r806 3 in the international residential code calls for the roof deck above the space to be vented continuously from the eave to the ridge.