Flashing helps direct the flow of water around openings. Learn how to correctly install flashing when constructing a new house or altering the exterior of a house.
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DK - Do It Yourself Home Improvement © 2009 Dorling Kindersley Limited
No matter the shape of your roof, vents are a common feature of any roof structure. If you are roofing around an already-installed vent, you may need to alter the height of the flashing detail around the vent. If you are cutting out a hole in your roof to accommodate a new vent, be careful to cut a clean hole, to minimize any extra work that will be needed to complete your project. Hoods can vent through the wall or through the roof. In order to save time, materials, and potential for problems, always choose the shortest option for venting. Shown here is a roofing option. If you are installing a new vent, you will be cutting a hole in the roof. After placing the vent in the hole, slip the flashing flange under the shingles above the vent. The flashing will be over the shingles below the vent. Seal the joints. Place the vent cap on top of the vent.
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