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RAVATHERM XPS X MK
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, minimising 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.

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.

General information

Color

Grey

Shape

Rectangular

Uniclass 2015

Pr_25_57_65_60 Plastics sheetsPrimary

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

Product Reference

RAVATHERM XPS X MK

To be used in conjunction with Ravatherm XPS X 300 SL.

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

-

Weight (minimum)

5 kg

For 1.5m roll length.

19 kg

For 3.0m roll length

Dimensions

1.5 m x 50 m

3.0 m x 100 m

Width (minimum)

1.5 m

3.0 m

Roll length (minimum)

50 m

100 m

Performance

-

Elongation to break

17 ± 5 % MD

To EN 12311-1.

20 (± 6) % XD

To EN 12311-1.

Fire performance

Class E

To EN 11925-2 when tested with XPS range.

UV stabilization

Up to four months

Can be left exposed outdoors.

Colour

White Sheeting

With guidance lettering in blue.

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.

Flexibility at low temperature

-40°C

To EN 1109.

Standard product features

Colour:

White sheeting with blue guidance lettering.

Features:

A WFRL is a critical component of an inverted flat roof, minimizing heat loss due to the rainwater cooling effect.

Finish:

Polyethylene geotextile.

Material:

Polyethylene geotextile sheeting.

Shape:

Roll.

Size:

Supplied in 1.5 x 50 m or 3.0 x 100 m roll lengths.

Digital objects
PlatformCompatibleVersionCertified to
IFC
- 6 2.1
Revit
- 6 2.1
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Literature
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