Berk™ P-Series: Professional APP Modified Bitumen Membranes
The Berk™ P-Series is a premier line of APP (Plastomeric) modified bitumen membranes engineered for high-performance waterproofing and commercial roofing. Built on a high-tensile, non-woven polyester base, the P-Series offers exceptional puncture resistance and structural durability.
With an industry-leading 120°C flow resistance, Berk™ membranes are specifically designed to remain stable under intense heat, while maintaining flexibility down to -10°C. Whether you are specifying the P3000 (3mm) for base layers, the P4000 (4mm) for standard cap sheets, or the P5000 (5mm) for extreme-duty applications, Berk™ delivers absolute water impermeability and long-term protection for any low-slope or flat-roof project.
Key Features:
Brand: Berk™ Professional Grade
Material: APP Modified Bitumen (Torch-Down)
Reinforcement: High-Strength Polyester (700/400N)
Heat Stability: Superior 120C Flow Resistance
Range: Available in 3mm, 4mm, and 5mm thicknesses
Surface Options: PE Film, Aluminum, or Slate Granules
