Description
BERK MEMBRANE
High-Performance Plastomeric Waterproofing for Commercial Roofing The P-Series is a line of premium APP (Atactic Polypropylene) modified bitumen membranes designed for maximum durability in demanding climates. Reinforced with high-tensile non-woven polyester, these membranes offer superior puncture resistance and flexibility. With a high-temperature flow resistance of 120°C (248°F), the P-Series is engineered for stability in extreme heat, making it the ideal choice for torch-applied roofing and waterproofing projects.
| Model | Thickness | Equivalent | Primary Use | Roll Size |
| P3000 | 3.0 mm | 120 mil | Multi-layer base or flashing | 1m x 10m |
| P4000 | 4.0 mm | 160 mil | Standard heavy-duty cap sheet | 1m x 10m |
| P5000 | 5.0 mm | 200 mil | Extreme-duty/Heavy traffic | 1m x 7.5m |
Key Performance Features
Superior Heat Stability: 120 C / 248 F flow resistance—ideal for hot-weather applications.
High-Tensile Strength: Non-woven polyester core (700/400 N) provides excellent resistance to tearing and building movement.
Cold-Weather Flexibility: Tested to -10 C for reliable performance in seasonal transitions.
Versatile Surfacing: Available with PE Film (Smooth), Aluminum Foil, or Slate Granules for UV protection and aesthetic finish.
Absolute Waterproofing: Zero water permeability for long-term structural protection.
Application Areas
Flat and Low-Slope Commercial Roofs
Foundations and Underground Structures
Bridge Decks and Paving Waterproofing
Terraces, Balconies, and Patios
