As the construction industry increasingly demands superior roofing waterproofing solutions, synthetic roofing

underlayment has become a standard choice for new builds and renovation projects. With its unique materials

and innovative technologies, synthetic roofing underlayment excels in waterproofing performance, providing a

reliable barrier against harsh weather conditions.

Non-Absorbent Material Properties:

Unlike traditional asphalt roofing underlayment, synthetic roofing underlayment is typically made from hydrophobic

polymers such as polypropylene (PP) or polyethylene (PE). These materials exhibit a very low affinity for water, maintaining

structural stability even under wet or rainy conditions. In contrast to traditional asphalt materials, synthetic underlayment

does not absorb water, soften, or delaminate in damp environments, ensuring the roofing structure remains strong and intact.

Seamless, Continuous Waterproof Layer:

To further enhance waterproofing performance, many high-quality synthetic roofing underlayments utilize multi-layer

co-extrusion or lamination techniques to tightly bond the waterproof membrane to the backing layer. This creates a

highly continuous and uniform waterproof barrier, similar to a solid "shield," which significantly reduces potential leakage

points. The innovative technology behind synthetic roofing underlayment undoubtedly offers buildings more stable and

reliable protection.

Proven Waterproofing Tests:

Top-quality synthetic roofing underlayment undergoes rigorous laboratory testing (such as ASTM D4869 or

ICC-ES requirements) to validate its waterproofing capabilities. These underlayments can withstand heavy

rainfall or snowmelt conditions without leakage, even after hours or days of water pressure testing, ensuring

that roofs stay dry and secure during extreme weather events.

As technology continues to evolve, synthetic roofing underlayment, with its exceptional waterproofing and

durability, is gradually becoming the industry standard, and it is expected to be a key solution for global roofing

waterproofing needs in the coming years.