Metal Deck Roof Assembly

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

Metal deck roof assembly.

Any ul classified type g1 g2 or g3 base ply sheet type 15 20 or 30 felt or ul classified prepared roofing accessory or gcp applied. Venting does not impact the structural performance of the steel deck. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Get free shipping on qualified metal roofing or buy online pick up in store today in the building materials department.

While a class 1 assembly can be substituted for a class a b or c roof assembly a class a b or c assembly cannot be substituted for a class 1 roof assembly. Or mineral fiber or glass fiber insulation boards laid over gypsum sheathing and covered by a class a b. The roof deck most underlayment most roof coverings membranes and air films cannot be considered insulation. Building and energy codes almost always specify a required minimum r value for exterior walls and roof assemblies with above deck insulation so the minimum required r value in your local jurisdiction is something that you need to.

Some materials in the roof assembly may require venting of the steel roof deck such as roof systems with light weight insulating concrete. Metal panel roof systems require a minimum 3 8 air gap between the underside of the metal panel and the covered or uncovered insulation board. The corrugated metal substratum is placed over the specified roof insulation and fastened through the roof insulation to the steel deck with min. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.

Thermapink should be attached with stress plates and should only be used over steel decks if a thermal barrier typically gypsum board is installed between the deck and the thermapink. Any thickness polyisocyanurate foamed plastic. For insulated steel roof deck assemblies fm class 1 includes fm 4470 and fm 4450 approval standard for class 1 insulated steel decks roofs. The panel clips are to be attached to the corrugated metal substratum with one no.