As weather patterns grow increasingly unpredictable, superior waterproofing has become essential in roofing systems. In recent years, synthetic roofing underlayment has emerged as a top choice in the industry due to its outstanding water resistance.

Made from non-absorbent materials like polypropylene (PP) or polyethylene (PE), synthetic underlayments eliminate the risk of water absorption and seepage at the source—far outperforming traditional felt under wet conditions. In addition, multi-layer co-extrusion and lamination technology creates a seamless waterproof barrier, acting like a unified “shield” that minimizes potential leak points.

Many high-quality synthetic underlayments are also lab-tested under standards like ASTM D4869 or ICC-ES to ensure proven waterproof performance. Even after hours or days of heavy rain or snowmelt exposure, they remain leak-free and reliable.

As demand for high-performance roofing solutions grows, synthetic underlayment is leading the industry into a new era of roofing protection.