Construction and Materials
Owens Corning offers a range of underlayment products designed to provide a critical secondary barrier against water infiltration beneath primary roofing materials. These underlayments are engineered to work in conjunction with shingles and other roofing systems, offering enhanced protection and longevity for the roof deck and building structure.
The construction of Owens Corning underlayments typically involves a durable reinforcing mat or fabric, which is then saturated and/or coated with specific asphalt formulations. This construction provides both strength and water-resistant properties. The specific materials and manufacturing processes vary depending on the product type, with options designed for different climates, exposure levels, and installation methods.
Key materials commonly found in Owens Corning underlayments include:
- Reinforcing Scrim/Mat: Often made from polyester or fiberglass, this provides tensile strength and dimensional stability, preventing tearing and stretching during installation and under roof stress.
- Asphaltic Coating: Specially formulated asphalt provides the primary waterproofing layer. This coating is designed for flexibility, adhesion, and resistance to degradation from UV exposure and temperature fluctuations.
- Mineral Granules (on some products): Some underlayments may incorporate mineral granules on the surface to improve slip resistance for installers and provide additional UV protection.
- Surface Treatments: Proprietary treatments can be applied to enhance grip and facilitate overlap sealing during installation.
Owens Corning offers several types of underlayment solutions, each with specific characteristics:
- Synthetic Underlayments: These are engineered products that utilize advanced polymers and reinforcing fabrics. They are known for being lightweight, strong, and resistant to moisture and rot. Their construction often involves multiple layers of polymeric film and woven or non-woven reinforcing materials.
- Felt Underlayments: Traditionally made from asphalt-saturated felt, these underlayments offer reliable water resistance. The felt base provides a strong absorbent layer, while the asphalt saturation creates the waterproofing barrier.
- High-Temperature Underlayments: Designed for use in areas with high ambient temperatures or with roofing materials that generate significant heat, these underlayments are formulated to maintain their integrity and performance at elevated temperatures without softening or degrading.
The construction of these underlayments emphasizes ease of installation, durability, and long-term performance. Features such as pre-printed guidelines for overlap and fastening can be incorporated to ensure proper installation and optimal water-shedding capabilities. The specific combination of materials and manufacturing techniques ensures that Owens Corning underlayments meet industry standards for fire resistance and wind uplift, contributing to the overall integrity and safety of the roof system.
