Flat Roof Assembly

In unvented flat or low slope roofs with parapets perform a full flood test to ensure leak free installation of roofing membrane.

Flat roof assembly.

To calculate the total r value of a roof assembly find the total thickness in inches of each type of insulating material within the system. Unvented flat roof assembly. The main components typically remain constant while the only component that will vary is the roof membranes manufacturers roof system which is the waterproofing barrier or top layer of the roof assembly. 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.

Sc historically typical construction of homes in canada and the us have vented attics between the ceiling of the interior space and the roof. The components of a conventional flat roof assembly varies very little from roof to roof. A wear surface of finely crushed stone granules is usually applied to the top layer of hot tar to protect the built up roof assembly from uv light and weather. The colder the climate the thicker the rigid insulation required.

Conventional flat roof assembly. Before constructing a flat roof assembly please refer to the unvented roof assembly comments under 6 2 vented and unvented roof assemblies and if applicable 6 3 parapet walls. For each different material multiply the thickness by the standard r value per inch for that material. Roof assemblies must control for exterior moisture in a monolithic and complete fashion.

Test roofing membranes for integrity prior to covering from below. That s a great question. A flat roof s design is both efficient and economical. An unvented roof assembly is constructed without any ventilation and is fully sealed on all sides and filled with insulation.

Flat roofs are nothing new nor are some of the proven materials that cover these often expansive roofs such as those found on factories warehouses big and small box stores apartment buildings large public structures and schools universities. Add the results for all the materials together to get the total r value for the roof assembly. The higher the interior moisture level the thicker the. Condensing surface temperature controlled the thickness of the rigid insulation at both the roof deck and perimeter is determined by a calculation procedure similar to figure 5.

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.