Minimum Roof Edge Details

Secondary roof drains are to be positioned on the roof so that water will drains to the primary upslope and they should not be installed at the same elevation as the primary.

Minimum roof edge details.

A furring edge is a strip of one by two wood you install on the vertical surface of the house just beneath the roof s edge. They must be carefully designed and installed to provide the appropriate performance and life expectancy. Slope should be built into the structure on new buildings. Parapet walls and deck wall intersections often require specific addi tional components to accommodate vertical flashings or coping caps.

Place the drip edge down aligning it so water will drip into the gutters. The bottom of the exterior vertical face of a coping cap or metal edge flashing should be a minimum of 1 inch below the upper most edge of the exterior wall material. Roof edge details 9 1 general of all exterior building components roofs probably have the greatest exposure to environmental and physical abuse. Install drip edges on the eaves first.

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. Lengths of drip vary but typically it s sold in ten foot lengths 120. 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. Parapet walls and roof decks.

When you install the drip edge over this strip it keeps the lower flange further from the home s siding which helps to keep water further from the home. Drip edge varies in dimensions but typically the flange that nails to the roof surface is about 2 5 wide and the vertical edge that directs roof runoff down and away is about 1 5 in depth. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. Roof edging and perimeter chapter covers a multitude of fascia design methods for flat roofing systems water should not be allowed to flow over the edge of built up roofs.

To effectively waterproof this area we like to follow a detail supplied by manufacturers that calls for running the membrane all the way to the roof edge and down over the. It also provides minimum edge system material thicknesses that lead to satisfactory flatness and designs to minimize corrosion. Construction professionals have been successfully using the standard along with the specifications and requirements of roofing membrane and edge system manufacturers to strengthen their wind designs. Be careful with ladders and never step on the tops of fascia other reasons for controlled roof access beyond security.

Roof slope of 1 4 per foot minimum is required on all roof systems.