In wet, windy climates such as Florida, a roof needs all the protection it can get. For new roof installation in Ocala, FL, home builders are turning to a roofing product known as ice and water shield. Also known as ice and water barrier, this self-adhesive waterproof roof polymer underlayment is glued to the first three feet or so of the roof sheeting along the edges. It is the edges of a roof that are most vulnerable to wind and water damage.
Much Better than Tar Paper
Back in the day, roofing consisted of the roof sheeting or plywood, then a layer of tar paper nailed to the roof sheeting. Next, shingles were nailed on top of the tar paper. In place of the tar paper, many builders are using the ice and water shield which is adhesive backed, and bonds to the roof decking. This way water never gets between the ice and water shield and the roof decking. This system protects the roof edges in ways tar paper never did.
The ice and water shield product is made from a dense waterproof polymer material similar to asphalt. Another advantage over tar paper is that when the shingles are set over the ice and water shield and nailed to the sheeting, the polymer material of the ice and water shield actually closes around the nail head creating a watertight seal.
Damage from Water Under Shingles
In Florida hurricane and other strong winds will push rainwater one to two feet underneath the tar paper and shingles on a house. With Florida’s humid climate, this moisture remains under the roofing materials possible creating a mold problem. But with the ice and water shield, there is no way for the water to get under the ice and water shield. This is important as some homeowner insurance policies do not cover roof damage from wind-driven rains.
Other Roof Areas
Ice and water shield is also used to protect a roof in other place besides the first three feet or so of the roof edges. Ice and water shield is recommended for areas of a roof that have a low-slope with the tendency for water to collect and sit. Ice and water shield is also used in roof valleys where two pieces of roof sheeting meet to form a seam. Ice and water shield is also used on roof overhangs, eaves, and rake edges. It is also used as a water barrier for roof vents and along chimneys and skylights for added protection.
For new roof installation in Ocala, FL, ice and water shield installed on the edges of roof are providing additional wet weather protection. A home builder will know the roofing requirements for ice and water shield in your area according to building codes.