The foundation of roofing protection

By Dani Sheehan.

Explore APOC’s underlayment lineup and choose the right product for every project.

While shingles, metal panels and other materials are the visible elements of a roof, the underlayment often does the heavy lifting behind the scenes. Acting as the first line of defense against water infiltration and other damaging forces, it plays a vital role in ensuring the long-term performance and durability of a roof.

Understanding the capabilities and advantages of different underlayment products can mean the difference between your project merely meeting code and one that exceeds expectations in terms of protection, longevity and ease of installation. APOC’s Weather-Armor® line offers several exceptional products designed to address a variety of challenges. Explore the unique features of some of their favorite products below so you can better understand how they fit into the larger roofing system and add value to your projects.

Understanding underlayments: Which product fits your project best?

1 – Weather-Armor® CX-L® Hybrid Roof Underlayment

Key features:

• Water-shedding and nail-sealable
• Twice the coverage per roll compared to 30-pound felt, with reduced weight
• Combines the durability of synthetics with the flexibility of organic felts
• Temperature resistant up to 240° Fahrenheit (F)
• Non-skid surface for safer installation

Ideal for: General roofing projects that require easy installation, lightweight materials and a durable solution for a wide range of climates.

Unique selling point: Its hybrid design offers a superior balance between traditional and synthetic materials, making it highly versatile.

2 – Weather-Armor® SB1 Self-Bond® Roof Underlayment

Key features:

• Ice and water barrier for enhanced leak protection
• Ultraviolet resistant for up to 90 days of exposure
• Highly flexible, rubberized waterproofing membrane
• Suitable for steep slope roofs

Ideal for: Roofs in climates prone to ice, heavy rain or strong winds; especially critical areas like edges and valleys.

Unique selling point: Its self-bonding, highly elastic nature ensures excellent coverage in vulnerable areas.

3 – Weather-Armor® HT³ High Temperature Premium Roof Underlayment

Key features:

• Withstands temperatures up to 265°F
• Cross-laminated surface increases durability
• Non-skid and walkable, ensuring safety during installation
• Designed for metal, tile, shingle and slate roofing systems

Ideal for: Hot climates and roofs with high heat exposure, such as under metal or tile.

Unique selling point: High-melt bitumen and cross-laminated polypropylene optimize its performance under extreme conditions.

Quick glance comparison

Consult the experts to learn more!

Choosing the right underlayment is a strategic decision that can significantly impact the performance and durability of the entire roofing system. Each of APOC’s Weather-Armor underlayments is engineered to meet specific challenges, offering you and your customers peace of mind no matter the environment or application.

Learn more about APOC’s roofing underlayment options.