RAVATHERM XPS X MK
Verified by manufacturer 15 days ago
1.5 m Roll Width
1.5 m Roll Width
BSI Kitemark
Certificate type
A spun-bonded polyethylene geotextile, this vapour permeable waterpoof membrane is used as a ‘breather’ layer in inverted ballasted flat roofs and is available in 1.5 m or 3 m rolls.
Application
To be used in conjunction with Ravatherm XPS X 300 SL for an inverted flat roof - a form of flat roof where the thermal insulation is placed above the waterproof membrane.
Description
Ravatherm XPS X MK is a water flow reducing layer (WFRL) consisting of a polyethylene geotextile, used in conjunction with Ravatherm XPS X 300 SL.
Features and benefits:
- Water vapour-permeable.
- Water-resistant.
- Tear-resistant.
- Uv stable - can be left exposed outdoors for up to four months.
- Fire - melts and shrinks away from a heat source (unclassifiable as regards building regulations).
- Temperature - retains flexibility and toughness down to -73°C, melting point is 135°C.
- Excellent rot resistance making it ideal for insulating green roofs.
- A WFRL is a critical component of an inverted flat roof, minimizing heat loss due to the rainwater cooling effect.
- Ravatherm XPS X MK prevents rainwater from reaching the waterproofing layer, thereby reducing the rainwater cooling effect caused by rainwater flowing between the insulation and waterproofing membrane.
General information
Color | Grey |
Finish | Woven Polyethylene geotextile |
Material | Polyethylene Polyethylene geotextile sheeting. |
Shape | Rectangle |
Length | 50000 mm 100000 mm |
Width | 1500 mm 3000 mm |
Uniclass | |
CAWS | J31/130 Inverted roof coating J31/390 Water flow-reducing layer J41/120 Built-up reinforced bitumen membrane inverted roof covering J41/390 Water flow-reducing layer J42/120 Inverted roof covering J42/390 Water flow-reducing layer |
Specification data - Plastics sheets
Material | Polyethylene. |
Performance characteristics | - |
Elongation to break | 17 ± 5 % MD.To EN 12311-1. 20 (± 6) % XD.To EN 12311-1. |
Fire performance | To EN 11925-2, Class E.To EN 11925-2 When tested with XPS range. |
UV stabilization | Up to four months.Can be left exposed outdoors. |
Form | Spun-bonded.Polyethylene geotextile membrane. |
Root inhibitor | Waterproof layer.Ravatherm XPS X MK should be loose-laid over the insulation, at right angles to the slope with 300 mm laps running down the slope. |
Physical properties | - |
ColourWhite Sheeting with guidance lettering in blue. | White and blue. |
Weight (minimum) | For 1.5 m roll length. |
Execution | Installing geotextile sheet. |
Flexibility at low temperature | -40°C. To EN 1109. |
Watertightness | W1 Class - to EN 1928 (A). |
Nail shank | 55 ±20 N MD. To EN 12310-1. 50 ±20 N XD. To EN 12310-1. |
Roll width | 1500 mm. |
Roll length | 50 000 mm. |
Roll weight | 5 kg. |
BIM objects
NBS BIM object standard
This BIM object has been authored to meet the requirements of the NBS BIM object standard.
Find out more about the NBS BIM object standard.
| Platform | Compatible | Version |
|---|---|---|
 IFC | - | 7 |
 Revit | - | 7 |
Third party certifications
- BS EN 12311-1:2000 - Flexible sheets for waterproofing. Determination of tensile properties. Bitumen sheets for roof waterproofing
- BS EN ISO 11925-2:2020 - Reaction to fire tests. Ignitability of products subjected to direct impingement of flame. Single-flame source test
- BS EN 1928:2000 - Flexible sheets for waterproofing. Bitumen, plastic and rubber sheets for roof waterproofing. Determination of water tightness
- BS EN 12310-1:2000 - Flexible sheets for waterproofing. Determination of resistance to tearing (nail shank). Bitumen sheets for roof waterproofing
- BS EN 1109:2013 - EN 1109:2013Approval standard: Flexible sheets for waterproofing. Bitumen sheets for roof waterproofing. Determination of flexibility at low temperature
Literature
Ravatherm XPS X MK Technical Data Sheet