Roof Underlayment Irc

Roofing underlayment or felt protects the roof deck from rain before the roofing is installed.

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. 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. 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. 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.

Quick roofing guide to the international residential code. Roofing underlayment or felt protects the roofing from any resins that bleed out of the sheathing. 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. You may be looking for the quick roofing guide to the international building code.

Not all roofing materials require an ice barrier. Roofing underlayment or felt provides an extra weather barrier in case of blowoffs or water penetration through the roofing or flashings. 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. This page references the 2018 international residential code.

Last updated july 13 2020.