A roof’s first line of defense against severe weather isn’t just the shingles, but the ice and water shield beneath. As your local building supply partner, Van Boxel Building Supply wants to share our perspective on why this essential waterproof roof membrane is so critical for a long-lasting, durable roof.
It Creates a Fully Adhered Waterproof Barrier
Unlike traditional roofing felt, which is mechanically fastened, an ice and water shield is a self-adhering membrane that bonds directly to the roof decking. This offers a major advantage over traditional felt, providing top-tier defense against severe, wind-driven rain getting under the primary roofing.
The Unique Self-Sealing Functionality
One of the most common ways a roof can fail is through water intrusion around the fasteners used to install the final roofing. The specialized rubberized asphalt of an high temp ice and water shield roof underlayment creates a tight, waterproof seal around the shank of any nail or screw that passes through it. This self-sealing quality effectively eliminates thousands of potential leak points.
It Provides Essential Defense Against Ice Dams
Ice dams form when heat from inside a building melts snow, which then refreezes at the colder eaves and blocks proper drainage, which can cause significant damage. We always advise applying an ice and water shield roof underlayment along the eaves to provide a critical waterproof layer that prevents this trapped water from ever reaching the wood decking, attic, and interior walls.
Targeted Protection for High-Risk Areas
Certain roof areas, like valleys, low slopes, and penetrations, are highly prone to leaks. For hotter zones, such as near vents or under metal systems, we apply a high temp ice and water shield. Using the correct waterproof roof membrane in these vulnerable areas is a key strategy for a durable roof.
Van Boxel Building Supply is committed to providing only high-quality, thoroughly tested products to our customers. Ensuring you have the right materials is the first step toward a secure and resilient structure. To learn more about how we approach building a superior roofing system, explore our product resources or contact our team for expert advice on your next project.
