Residential Roof Assembly Detail

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.

Residential roof assembly detail.

It is a waterproofing layer made of regular felt stacked above the solid. Tpo s long term heat uv and natural fungal resistance plus flexibility without need for plasticizers also make tpo a reliable low slope roofing system. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. These assemblies are created by eliminating ventilation openings and moving the thermal moisture and air control boundaries to the plane of the roof deck.

A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework. R 46 unvented roof assembly two layers of r 6 5 inch rigid insulation yielding a total combined thickness of 2 5 inches. Short for thermoplastic polyolefin tpo is a single ply roofing membrane that offers excellent performance at a cost effective price. 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.

Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Heat welded seams provide superior strength. Unvented roof assemblies such as conditioned attics and unvented cathedral ceilings are becoming common in north american construction. Roof decks shall be covered with approved roof coverings secured to the building or structure in accordance with the provisions of this chapter.

Two layers are preferable to one layer due to increase in air flow resistance. Download free high quality cad drawings blocks and details of roof and deck insulation organized by masterformat. Roof assemblies shall be designed and installed in accordance with this code and the approved manufacturer s instructions such that the roof assembly shall serve to protect the building or structure. The overall insulation level in the roof assembly must meet the baseline requirements for energy efficiency as given in the irc section n1102 or iecc section 402.

There is no potential for condensation until interior moisture levels exceed 45 rh at 70 f during the coldest month.