Roof Underlayment Irc

Class a b or c roofing shall be installed in areas designated by law as requiring their use or when the edge of the roof is less than 3 feet 914 mm from a lot line.

Roof underlayment irc.

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. You may be looking for the quick roofing guide to the international building code. Last updated july 13 2020. Quick roofing guide to the international residential code.

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. Roofing underlayment or felt protects the roof deck from rain before the roofing is installed. Roofing underlayment and its attachment requirements posted on january 7 2016 by kbuchinger the international residential code irc is commonly considered to be a prescriptive code which means there are many requirements included that provide specific directions. Section r905 1 2 ice barriers 2018 irc outlines which roofing types require ice dam leak protection what materials can be used as an ice barrier and how far up the roof plane the barrier must be installed.

This page references the 2018 international residential code. Complete and separate roofing systems such as standing seam metal roof systems that are designed to transmit the roof loads directly to the building s structural system and do not rely on existing roofs and roof coverings for support shall not require the removal of existing roof coverings. 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. Roofing underlayment or felt provides an extra weather barrier in case of blowoffs or water penetration through the roofing or flashings.

Roofs shall be covered with materials as set forth in sections r904 and r905.