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Roofing Info




It's not hard to understand when a roof has missing shingles it's not a good thing. Missing shingles will usually occur in only four instances.

  1. Improper Nailing: Of course missing shingles can happen when roofing shingles are not installed and nailed properly. A nailing pattern is designed in a certain way. If an installer deviates from that, many problems can occur. The industry calls it "skip nailing." An example may be that the manufacture recommends four nails per shingle - however, the installer wants to move along faster and takes it upon himself to use only 3 nails per shingle. This causes the shingle to slip downwards and eventually detach itself from your home.

  2. Improper Installation Pattern: If shingles are installed improperly with too much or too little exposure they will not adhere themselves to the designed adhesive strip. Each shingle has a tar line or what some call an adhesive strip. This strip adheres the shingle tabs to the shingle row below it. If shingles are not installed according to manufactures suggestion, this adhesive will not line up properly - and cause the tabs to break away.

  3. Drying And Cracking: When shingles age and they are exposed to sun and exterior elements for the life of the shingle, they begin to dry-out and crack. This drying and cracking causes the shingles to tear away.

  4. Wind: The majority of the time, if you have missing shingles on your roof the culprit will be wind storms. High winds can cause what is called "Uplift." Thunder storms, hurricanes and even wind storms with little or no moisture can blow across a roof so strongly that the shingle tabs will lift upwards. So much pressure over a short period of time will cause the tabs to break away.

Of course you will need to at the very least replace shingles which have completely blown off. For shingles with tabs blowing up and down, hand seal the shingles with an asphalt plastic cement, commonly referred to as flashing cement.

This roofing cement must comply with ASTM D4586 -- Type I orType II which is the standard specifically for asbestos-free asphalt plastic roof cement. (Some products meeting this standard may involve hazardous materials. This bulletin does not purport to address all of the safety and health problems associated with the use of materials meeting this specification. It is the responsibility of the user to observe the safety and health practices as determined by the manufacturer of the product and stated on the label, instructions and Material Safety Data Sheet (MSDS).

To hand seal, lift each tab of a 3-tab shingle and apply two spots of the cement under each tab. Each spot should be approximately the size of a quarter and placed 1" to 2" from each end of the tab and near the bottom. Laminated shingles require 4 spots of cement per shingle. After application, press the tab down firmly to start the bond. Be careful not to apply the cement too close to the bottom of the tab. This causes the cement to squeeze out when the tab is pressed down.

If you have larger areas of missing shingles then you may need to replace your entire roof or that entire section of roof. In most cases wind damage is covered by your homeowners insurance. If you feel you may need your entire roof replace do to large areas of damage from a wind storm, you should call your insurance company.

For a more permanent solution, re-roof with Owens Corning Shingles. They are specifically designed to withstand North and south Carolina moisture conditions for extended periods of time and are backed by our strongest product warranties* available to homeowners.

For the average homeowner this process can be difficult and dangerous to do on their own. Patton General Contracting* is a certified installer of Owens Corning roof products as well as RoofLock - a product designed to clean and protect your roof from this type of issue. Visit here for more information.

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Other Issues You May Have

As with any type of work you personally do on your home or in this case inspecting your roof, please use caution and safety equipment. If you do not feel comfortable inspecting your roof or you have trouble knowing what exactly to look for, please feel free to contact us for a free consultation.

Visit Here to view home photos using Owens Corning Roofing System.

Feel free to contact us at any of our North and South Carolina locations with any questions or concerns you may have about your roofing needs. We will be happy to assist you in any way we can.





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