Secondary Water Resistance Roof

Water can easily leak through the nail holes piercing felt paper but cannot get through the secondary water barrier.

Secondary water resistance roof.

Or a foamed polyurethane sheathing adhesive applied over all joints in the roof sheathing to. Water can drive up under shingles pool in valleys and slip sideways along ridges and hips. Some roofs have a layer under the shingles or tiles to provide extra protection in case water gets past the primary barrier. Secondary water barrier system for installation beneath asphalt shingles metal quarry slate and roof tile.

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. Roofing felt or similar paper based products are not acceptable for secondary water resistance. However not all code approved systems meet the requirements of the insurance industry under the guidelines of the florida office of insurance regulation. A peel and stick underlayment installed directly to the roof s decking or an expensive adhesive installed under the roof s decking.

Install two layers of a water resistant roof underlayment or product meeting the attached testing criteria. There are two ways to achieve maximum discount here. Secondary water resistance barrier swr. From a roll of water resistant roof underlayment layer meeting the same testing criteria.

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. To meet the current code roofs must use an approved underlayment system which florida calls a secondary water barrier or secondary water resistant swr barrier. Kelly roofing installs peel stick underlayments as part of our standard reroofing system.

All secondary water resistance products must be installed per the manufacturer s recommendations. What s under your roof. This is called secondary water resistance swr in the insurance and roofing world. An swr is a self adhering polymer modified bitumen roofing underlayment applied directly to the sheathing.

A benefit of this type of material is it adheres directly to the roof decking and if you were to lose your roofing material in a storm this material will stay providing a secondary water resistant barrier swr. 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. Basically this is a peel and stick type of material that is installed before the shingles.