Last updated August 27, 2008
Sheathing
Sheathing can best be described as a protective covering or layer for your roof. Sheathing materials are used to protect the rafters from decay. There are a number of different materials that may be used for sheathing purposes but typically plywood is used. This is due to the fact that wood makes an excellent insulator and is very inexpensive. Tongue and Groove is another type of commonly used sheathing. It is important to realize that sheathing is an important part of your roofing system and you should have sheathing included in your seasonal roofing inspections to ensure that they are in proper working order.
If you see signs of sheathing decay, you will need to contact a local roofing contractor right away. Deterioration of the sheathing will lead to greater problems and you may already be experiencing leaking. You can visually inspect the sheathing yourself by looking in your attic. If you notice any dark or wet spots on the sheathing then you have a leak. Also, if you are checking the sheathing and notice that you can see pinholes of light through the roof, you will need to notify the roofer and have these repaired.
Sheathing not only supports and protects the rafters, but it is also the basis for the underlayment. Therefore, it is imperative that all sheathing is built according to code and remains in good condition. Hiring a professional and experienced roofer to install the sheathing is the best way to ensure that the sheathing is spaced at a distance that will provide ample support and prevent sagging or springiness. If there is a problem with the sheathing, you will find that this will affect the ventilation system and over all structure of the roof. To ensure that your roofing system is properly maintained, make certain that the roofing contractor who performs the inspections submits a written detailed report of their findings. This is the best resource that you have to stay current with any needed repairs that your roof may require.
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