Klober Permo Forte 145 Breathable Roof Membrane
The Klober Permo Forte 145 is the strongest breathable roofing membrane in Klober’s specialist range, designed to provide superior protection for pitched roofs while allowing moisture to escape. Ideal for both cold and warm roof applications, this four-layer, vapour-permeable membrane features a built-in reinforced safety grid, offering added strength and reliability during installation and throughout the roof’s life.
Advanced Breathable Technology
Permo Forte 145 is engineered to control condensation effectively, ensuring that moisture vapour can escape while preventing water ingress. Its low resistance (LR) design conforms to BS 5250, making it a reliable solution for pitched roof ventilation and moisture management.
Durable and High-Performance
Four-layer, reinforced membrane with built-in safety grid
Tear-resistant, lightweight, and flexible for easy installation
Water penetration resistance: W1
Tensile strength: 430/370 N/50mm (MD/CD)
Nail tear strength: 320/340 N (MD/CD)
Elongation: 20/15% (MD/CD)
Fire rating: EN 13501-1: E
Temperature resistance: -40°C to +80°C
Practical Applications
Permo Forte 145 can be installed in both fully supported and unsupported roof systems, making it suitable for a wide range of pitched roof projects. It is effective in all wind zones (with appropriate headlap and batten gauge) and is compatible with battened or taped headlaps, providing versatility for both new builds and refurbishments.
Product Details
Brand: Klober
Colour: Light grey
Weight: 145 g/m²
Width & Length: 1.5m x 50m (75 m²) or 1.1m x 55m (60.5 m²)
Packaging: Pallet quantities – 20 rolls (1.5m x 50m), 24 rolls (1.1m x 55m)
Guarantee: 10-year manufacturer guarantee against defects
Approvals & Standards
BBA approved (cold vented / warm non-vented / cold non-vented)
NSAI approved
CE & UKCA marked
Manufactured to BS EN 13859-1:2010
Frequently Asked Questions
1. What makes Permo Forte 145 different from standard breathable membranes?
Permo Forte 145 features a **four-layer construction with a built-in reinforced safety grid**, making it stronger, more tear-resistant, and safer to handle than standard membranes.
2. Can this membrane be used for both cold and warm roof systems?
Yes. Permo Forte 145 is suitable for **cold, warm, vented, and non-vented roof applications**, offering versatile performance for a variety of roof types.
3. How does it help with condensation?
Its **vapour-permeable design** allows moisture to escape from the roof structure while preventing water ingress, effectively reducing the risk of condensation build-up and protecting timber and tiles.
4. Is Permo Forte 145 compliant with building standards?
Yes. It is **BBA approved, NSAI approved**, CE/UKCA marked, and manufactured to **BS EN 13859-1:2010**, ensuring compliance with UK and European roofing regulations.
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