DuPont™ Everon™ Vapour Permeable Roofing Underlay
DuPont™ Everon™ Vapour Permeable Roofing Underlay
<p><b>DuPont™ Everon™ Vapour Permeable Roofing Underlay</b> is a high-performance breather membrane engineered to help protect roof structures from the elements while supporting efficient moisture management. Utilizing patented DuPont technology, this lightweight yet durable underlay delivers outstanding airtightness and watertightness, with a water column resistance of up to 7 metres (EN ISO 811) to help safeguard roofs even during heavy rainfall.</p>
<p>Designed for demanding installation environments, it offers robust mechanical strength with high nail tear resistance and tensile performance, while the printed grid and lightweight 1 m × 50 m roll format enable faster, more accurate installation. With Fire Class E performance, 3-month UV resistance, and the assurance of a 10-year DuPont warranty, DuPont™ Everon™ provides roofing professionals with a reliable, weather-ready solution trusted by roofers across the UK*.</p>
<p>*Based on feedback collected during a product trial involving 16 roofers from various regions across the UK.</p>
Features & Benefits
Specifications
Standard Sizes
| Unit | Width | Length |
|---|---|---|
| Roll | 1.0m | 50 |
Testing
| TEST METHOD | TEST TITLE | PROPERTY | RESULTS |
|---|---|---|---|
| EN ISO 12572 (Climate C) | Hygrothermal performance of building materials and products — Determination of water vapour transmission properties — Cup method | Water vapour transmission (sd) | 0.03m |
| EN 1928 (Method A) | Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing - Determination of watertightness | Water tightness | W1 Class |
| EN ISO 811 | Textiles — Determination of resistance to water penetration — Hydrostatic pressure test | Water column | 7m |
| EN 13501-1 | Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests | Reaction to fire | Euroclass E |
| EN 1849-2 | Flexible sheets for waterproofing - Determination of thickness and mass per unit area - Part 2: Plastic and rubber sheets | Mass per unit area | 130 g/m2 |
| EN 12311-1 | Flexible sheets for waterproofing - Determination of tensile properties - Part 1: Bitumen sheets for roof waterproofing | Maximum tensile force (MD) | 250 N/50mm |
| EN 12311-1 | Flexible sheets for waterproofing - Determination of tensile properties - Part 1: Bitumen sheets for roof waterproofing 33 | Elongation at max. tensile force (MD) | 55% |
| EN 12311-1 | Flexible sheets for waterproofing - Determination of tensile properties - Part 1: Bitumen sheets for roof waterproofing | Maximum tensile force (XD) | 200 N/50mm |
| EN 12311-1 | Flexible sheets for waterproofing - Determination of tensile properties - Part 1: Bitumen sheets for roof waterproofing | Elongation at max. tensile force (XD) | 50% |
| EN 12310-1 | Flexible sheets for waterproofing - Determination of resistance to tearing (nail shank) - Part 1: Bitumen sheets for roof waterproofing | Resistance to tearing MD (nail shank) | 150 N |
| EN 12310-1 | Flexible sheets for waterproofing - Determination of resistance to tearing (nail shank) - Part 1: Bitumen sheets for roof waterproofing | Resistance to tearing XD (nail shank) | 180 N |
| BS5534:2014+A2:2018 Annex A | The Code of Practice for Slating and Tiling | Wind uplift resistance (battened lap) | 1-2 |
| UV Resistance | 3 months | ||
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