Is your roof decking spaced out?
As your Denver roofing company who specializes in re-roofing, one of the structural components of your roof system that Roof Worx, located in Thornton, Colorado, thoroughly inspects is your roof decking. If you have ever heard the old adage “the basis of a good home is a strong foundation”, that also applies to your roof system. A quality re-roof begins with a solid foundation which is the roof decking.
Roof decking or sheathing is the lumber that is attached to the roof trusses of your home. This is the material that your roofing shingles are nailed to. Without a good, solid roof deck in which to nail the shingles, problems are sure to arise when the first big windstorm occurs. There are basically (3) types of common roof decking.
1. SOLID SHEATHING – Most new homes built after the mid to late 80’s typically have solid roof sheathing. This sheathing is typically ½” to 1” CDX plywood or OSB (Oriented Strand Board) and comes in 4’x8’ sheets. This type of substrate creates an excellent surface for properly nailing shingles. Homes with solid roof decking are commonly found in newer housing developments such as some of the ones in Highlands Ranch, Commerce City, Superior, Broomfield, Thornton and Castle Rock. During the tear off process of a re-roof project, our project managers and crew are well trained to identify any potential issues with the roof decking such as delaminated or deteriorated decking which would require replacement in order to provide a proper nailing surface.
2. PLANK DECKING– In older homes, plank decking may have been used for the roof decking (substrate). Typically, plank decking
material is either 1”x6” or 1”x8” lumber. Again, if this type of decking is discovered during the tear off of the roof shingles, a thorough inspection must be made to make sure that it is in good overall condition and that the gaps between the individual boards does not exceed ¼” to ½”. Most shingle manufacturers do not warrant their product if it is installed on planks that exceed 1”x6” or have gaps in excess of ¼”. In addition, many building departments have very specific requirements concerning the gap between planks in order to allow a new roof to be installed over plank decking. Roof Worx encounters this type of roof decking on a regular basis and knows what to look for and what local building officials require.
3. SPACED OR SKIP DECKING – Many older homes in older neighborhoods may have spaced or skip decking. This is typical decking found on homes that originally had cedar or wood shakes installed. This type of decking is identified by boards running horizontal to the rafters with a 4”-6” space between them. It is still acceptable to use this type of substrate if new wood shakes are being installed, however, if the re-roof is going to be made with any type of asphalt shingle product, the substrate must be new solid sheathing consisting of either OSB or plywood. Typically, if new substrate is required, it is simply installed over the existing spaced decking. An experienced inspector, like our Haag Certified Inspectors consider many factors when inspecting a roof as it relates to potential decking issues. They also look for evidence of plank or spaced decking from open soffit areas, or in some cases completing an inspection of the attic space to determine what type of roof decking exists.
Serving the entire Front Range communities from Ft. Collins to Colorado Springs, your local Denver roofing contractor, Roof Worx can assist you with all of your roofing needs. Our team of expert professionals can make sure that your new roof is expertly installed from a solid foundation through the finished product.
For more information on any of your roofing, siding, or gutter needs, contact Roof Worx your Denver roofing experts at (303) 353-1825. Roof Worx, Thornton, Colorado.