The Asphalt Roofing Manufacturers Association (ARMA) offers several tips on how to drive roofing nails accurately into asphalt shingles. Accurate nailing goes a long way toward ensuring optimal performance.
Here are some recommendations from ARMA:
- Only use corrosion resistant nails, such as aluminum nails that don't require additional galvanizing coats to achieve corrosion resistance.
- Roofing nails should possess a minimum shank diameter of 0.105" and a minimum head diameter of ⅜".
- Roofing nails should penetrate at least ¾" into a roof deck.
- Drive all roofing nails by hand or pneumatic nailer.
- Most asphalt shingles require a minimum of four nails.
Nailing area recommendations presented by ARMA include the consideration of shingle thickness and number of shingle layers.
Malarkey Roofing exceeds the minimum nailing area recommendations presented by ARMA, with the revolutionary nailing area called The Zone®.
The History of The Zone®
Malarkey Roofing Products® announced in December 2000 that the United States Government issued a patent for the development of the unique shingle design called The Zone. This groundbreaking technology increased the nailing area of a shingle three times the size of traditional laminated shingle nailing areas. Malarkey Roofing Senior Vice President Gregory Malarkey understood the perspective of roofers and collaborated to create this innovative shingle design. “After looking at laminate shingle installation, we realized we had to do something to help the roofer. Improper installation invalidates the warranty and could significantly reduce the life of the roof,” stated Greg Malarkey.
The Motivation behind The Zone
Incorrectly driven nails represent the primary cause of improper shingle installation. In turn, poor shingle installation produces a flawed roofing project that diminishes the value of your home. Incorrect nail placement can void roofing warranties due to leaks or worse, shingles blowing off roofs. Malarkey Roofing’s architectural shingles include The Zone nailing area, a near two-inch nailing area that facilitates correct nail placement.
An average size roof requires more than 6,000 nails to secure the shingles, which means installers have more than 6,000 chances to make a nailing mistake. Because of the sheer number of fasteners, research demonstrates that roofing contractors incorrectly install a vast majority of roofs. Greg Malarkey wanted to provide roofing contractors with a nailing method that dramatically increased fastener placement accuracy.
Laminated architectural shingles are the most popular shingle for roof installations. Their aesthetically appealing appearance enhances the visual appeal of your entire home. However, many laminated shingles provide roofing contractors with an area only ⅜ and ½ of an inch wide in which to drive nails. Malarkey Roofing Products developed The Zone technology to increase the speed of shingle installation. The 1¾" nailing area is more than three times the size of traditional nailing areas. Roofing contractors can now drive nails faster and more accurately, which leads to the completion of successful roof installation projects.
The Price You Pay for an Improperly Installed Roof
An improperly installed roof can lead to the voiding of a manufacturer's warranty. However, the loss of coverage pales in comparison to the conspicuous remnants of inferior nailing. If your roof has steep slopes, for instance, the backing strip of a laminated shingle might dislodge from below the top layer and lay askew, spoiling the look and leaving the roof susceptible to failure and leaks.
Here are some other issues caused by improper fastening:
Installing a roof with The Zone nailing area by Malarkey Roofing decreases the possibility of your roof experiencing troughing. Troughing is caused when the bottom, laminated layer of an architectural shingle, known as the shim, abruptly ends and the top layer of the shingle dips down in the empty space created. The troughing effect is magnified when the shingle is improperly high-nailed and penetrates only the top layer of the shingle, pulling it down and creating a visible trough in the roof design.
When it rains, runoff on the roof can move laterally along the trough and make its way between shingle layers, resulting in potential leaks, especially when fasteners are high-nailed and sit in this trough.
Although troughing doesn't affect every laminated shingle, it can affect enough laminate shingles to cause serious leaking into your home. Laminated shingles installed using The Zone have a much larger overlap and fastening area that helps prevent the development of troughing.
The Zone also reduces the chances of your roof experiencing blow-back leaks. When a laminate shingle’s rain seal degrades and loses adhesion, your roof faces the potential of incurring a blow-back leak. Precipitation amounting to no more than a half inch can penetrate the separated layers and move up the back of an architectural laminated shingle into the roof deck. Combined with troughing, moisture blow-back can prompt the failure of the entire roofing system. Think of the domino effect when one domino stacked against countless other dominoes falls to start an avalanche. The Zone diminishes the blow-back issue by increasing the amount of overlap between shingle layers. In addition to extra overlap coverage, The Zone also creates an additional rain seal for enhanced blow-back protection.
Buying the highest quality shingles does not reduce the risk of an inferior roof installation. Homeowners have to make roof installation a priority for ensuring both functionality and aesthetic appeal. The Zone from Malarkey Roofing helps reduce installation issues with laminated shingles and is an option for discerning homeowners when considering a roofing project.