In the world of construction, waterproofing is non-negotiable. Whether you’re protecting a residential foundation or a commercial rooftop, a reliable base mat is the foundation of a successful waterproofing system. One material gaining popularity is the compound asphalt felt base mat. But what exactly is it—and why is it becoming a go-to choice for contractors?
What Is Compound Asphalt Felt Base Mat?
Compound asphalt felt base mat is a multi-layered waterproofing sheet made by saturating a non-woven base—typically fiberglass, polyester, or a composite—with asphalt, and then coating it with modified asphalt compounds. These modifications improve elasticity, durability, and thermal resistance.
Key Features
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Dimensional Stability: Reinforced with non-woven materials, it resists stretching and shrinking under temperature changes.
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Water Resistance: The asphalt compound offers superior water repellency and prevents water infiltration.
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Heat Performance: Withstands high and low temperatures, making it suitable for a wide range of climates.
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Compatibility: Can be used with a variety of membranes (APP, SBS, self-adhesive, etc.).
Applications in Waterproofing
Compound asphalt felt base mats are typically used in:
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Roofing underlayment systems
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Basement waterproofing
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Bridge decks and tunnels
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Parking decks
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Below-grade structures
Why Use It Over Traditional Materials?
Compared to traditional organic felts, compound asphalt felt base mats offer longer lifespan, better resistance to UV rays and environmental stress, and improved compatibility with modern waterproofing membranes.
Conclusion
As construction standards rise and environments become more challenging, the demand for high-performance materials like compound asphalt felt base mats will only grow. Understanding their properties and applications ensures smarter material choices and longer-lasting protection.
