Secondary Water Barrier Shingle Roof

A secondary water barrier is the layer of material that is placed directly on the roof deck under the primary outer roof covering of shingles tile metal etc.

Secondary water barrier shingle roof.

A water resistant roof underlayment layer or product that provides protection to the structure to which it is affixed in the event the primary roof covering is damaged removed or penetrated by wind driven rain as the result of hurricane force winds. Tier 1 roofing roof peel and. Some roofs have a layer under the shingles or tiles to provide extra protection in case water gets past the primary barrier. Gcp applied technologies roofing detail membrane 18 in.

Roll self adhered roofing underlayment 112 sq. A discontinuous roof assembly consists of a roof system with unsealed overlapping components. Roof systems required to have secondary water barrier protection asphaltic shingle roofs wood shingles or shakes and architectural metal roof panels. Outside the high velocity hurricane zone.

A secondary water barrier shall be installed using one of the following methods when roof covering is removed and replaced. This is called secondary water resistance swr in the insurance and roofing world. This serves as a barrier to prevent the water from entering the home even after the primary barrier the roof covering system such as shingles or tiles and related underlayment has failed. When a hurricane or severe weather blows off the roofing or blows water up.

In fact when roofers need to replace a shingle roof equipped with a secondary water barrier they sometimes have to replace the plywood sheathing since the barrier peels up the wood ply during removal. Shingle tile and metal roofing are water shedding but not water proofing he explains. These types of roof systems are considered discontinuous roof assemblies. The adhesive on secondary water barrier on florida roofs is so strong it does not lift up with high winds.

A underlayment shall comply with section r905 1 1 of the florida building code residential. In the event of a catastrophic storm that damages the roof of the home one of the ways people can prevent water intrusion is to have what is called a secondary water resistant swr barrier. Here are a few reasons why floridians find that building codes often require them to add this component to their roofing system. The material is that tough.

Secondary water resistant swr barriers. Definition of a secondary water barrier.