Metal Deck Roof Assembly

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.

Metal deck roof assembly.

Copper or thicker can be installed over combustible decks and be considered class a without testing. Potential for condensation in phoenix arizona with unvented roof 1 750 heating degree days. Wide type tp standing seam system or 17 3 4 in. Get free shipping on qualified metal roofing or buy online pick up in store today in the building materials department.

The key is that the deck or framing is noncombustible. 1 an intermittent flame test in which the flame is turned on and off during the roof assembly to resist fire from flaming embers. It is used to support concrete or insulating membrane of a roof. Mechanically attached metal roof panels 12 3 4 in.

This roof assembly has no insulating sheathing installed above the roof deck. The roof deck most underlayment most roof coverings membranes and air films cannot be considered insulation. Gauge coated steel to be secured to the panel clips by engaging manufacturer s snap on seam with vinyl insert the panel clips are to be attached to the corrugated metal substratum with one no. Steel deck is a cold formed corrugated steel sheet supported by steel joists or beams.

Below roof deck spread of flame fm 4450 and ul 1256 are used to judge the contribution of the. There is no potential for condensation on the underside of the roof. Wide type hstp standing seam system 24 msg min. Winter design temperature 34 f.

An exception for combustible decks is that 16 oz sq. It was developed to provide a structurally efficient product for use in roof and floor systems. For roof assemblies with combustible decks wood plank t g astm e 108 and ul 790 require two additional fire tests. If metal panels are installed over combustible decks the assembly needs to be tested using astm e108 or ul 790.