A self-adhering membrane designed to protect roofs from water damage caused by ice dams and wind-driven rain is readily available at a large home improvement retailer. This roofing underlayment creates a watertight barrier, preventing leaks in vulnerable areas like eaves, valleys, and around chimneys. An example application is its placement beneath shingles on a roof in a region prone to heavy snowfall and ice formation.
The value of this protective layer lies in its ability to safeguard structures against costly repairs resulting from water infiltration. Its use helps prolong the lifespan of the roof and maintain the integrity of the building envelope. Historically, felt paper was the standard underlayment, but self-adhering membranes offer superior protection, particularly in severe weather conditions.
