The best way to protect a roof is to help it resist damage from water. Unfortunately, many homeowners believe that all they should do to protect a roof is to ensure there are good shingles on the home. There are actually a couple methods that will provide additional roof protection that works below your shingles.
A drip edge is a piece of thin sheet metal shaped like the letter T, which is attached directly to the roof decking with nails. This small part plays a crucial role in protecting your roof from damage and possible roofing repairs. Your roof will have protection from leaks caused by blow-unders. These occur when there is a heavy rain storm with strong winds. Without a drip edge, the wind can blow the rain under the shingles.
In addition, the drip edge will provide support to the shingles located at the roof's edges. Roofs without a drip edge will have shingles that hang off the roof and extend into the air. This will make the shingles more prone to becoming damaged in the winter due to the potential weight added from ice.
The drip edge also helps direct rainwater off your roof and into your gutters. The water won't be able to curl around a shingle's edge and head back towards the roof deck. Instead, it should fall directly into the gutter below.
Water and Ice Shields
A water and ice shield is essentially a wide strip that is waterproof. A strong adhesive helps keep the strip in place along the drip edge's top face, so nails will not be required to install it. The shield helps cover up those places where a roofing nail keeps the drip edge in place. Without the shield, the places where nails enter the roof will be prone to water leaks or ice dams.
When doing roof work on your home, be aware of what the local roofing codes are when it comes to water and ice shields. You may be surprised to learn that a shield is required due to their effectiveness against water leaks, and a building inspector may force you to install one on your roof if it was neglected.
These are just two ways to prevent potential water damage from being caused to your roof. Not sure if your roof has the protection it needs or fear that damage has already been caused? Contact a local roofer that can help.