#Installing drip edge on roof code
While the code section we are looking at in this post specifically applies to asphalt shingle roofs, it is worth noting that other types of roof coverings can benefit from the installation of a drip edge. Are There Instances Where A Drip Edge Isn’t Required?Īs previously discussed, while flashing in general is mentioned as a requirement in the code, the need for a drip edge on other roof types should be assessed by the roof style, manufactures installation guide for the roofing material, and geographical climate demand. Decorative drip edging materials can give any house an elegant touch. In addition to being code compliant, having a functional drip edge can also help boost your home’s curb appeal by giving your roof an attractive finish line. Without this protection, water may leak into gaps between the sheathing and wall, causing rot and deterioration of the wood members. This method helps to ensure that the perimeter of the roof system is properly sealed against moisture intrusion. When installed along the roof rake, the drip edge is applied over the underlayment and when installed along the roof eave, the drip edge is applied under the underlayment. Where is a Drip Edge Installed on a Roof?Īccording to the code section we just read above, the drip edge must be provided at the eave edge and rake edge of a roof. The first thing you notice here is that a drip edge shall be provided at shingled roofs. Underlayment shall be installed over the drip edge along eaves and under the drip edge along rake edges. with fasteners as specified in Section R905.2.5.
Drip edges shall be mechanically fastened to the roof deck at not more than 12 inches o.c. Drip edges shall extend not less than 1/4 inch below the roof sheathing and extend up back onto the roof deck not less than 2 inches.
Adjacent segments of drip edge shall be overlapped not less than 2 inches. Now as for asphalt shingled roofs, Section R905.2.8.5 states the following:Ī drip edge shall be provided at eaves and rake edges of shingle roofs. While flashing in general is mentioned, the need for a drip edge specifically for other roof types should be assessed by the roof style, manufactures installation guide for the roofing material, and geographical climate demand. One important note to make here is that although this code section specifically applies to asphalt shingle roofs, it is worth noting that other types of roof coverings can benefit from the installation of a drip edge however are not mentioned specifically within the code. When is a Drip Edge Required?Īccording to Section R905.2.8.5 of the International Residential Code (IRC), roofs covered with asphalt shingles are required to have a drip edge. In a nutshell, the drip edge is one of those essential parts to finishing off a roof that should never be overlooked or skipped to save costs. Without a drip edge, water can seep behind gutters and cause severe damage to both your fascia boards and roof sheathing over time. It also helps ensure proper ice prevention in cold climates by allowing frozen snow to melt off and run into the gutter without forming ridges or pools on top of the shingles.
#Installing drip edge on roof free
This combination ensures that water flows away from your fascia, keeping it free from rot and decay due to moisture buildup.Īside from protecting your home’s infrastructure, a drip edge also improves the aesthetics of your roof since it gives off a neat and finished look to the roofline.
The structure of a drip edge typically consists of an L-shaped slanted piece of metal that runs along the eaves and roof rakes, with a flat strip known as the head flashing. The drip edge’s unique design helps to direct water away from the roof and protects the building components of the roof. It forms a barrier between your fascia board and the shingles. A drip edge is a form of metal flashing, which is installed on the roofs edge to block water from entering the house, or getting under the roof.
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