Product Data Sheet Show all documents

Sikaplan® WP 1120-20 HL

Sheet waterproofing membrane for Basements and Tunnels

Sikaplan® WP 1120-20HL is a homogenous sheet waterproofing membrane with a yellow signal layer, based on polyvinylchloride (PVC-P)

  • Based on virgin material with consistent quality
  • With signal layer to indicate damages
  • High resistance to aging
  • High tensile strength and elongation
  • Resistant to natural aggressive mediums in ground water and soil
  • High resistance to mechanical impact
  • High dimensional stability
  • High flexibility in cold temperatures
  • Optimized workability, thermally weldable
  • Suitable for installation on weak substrate
  • Can be installed on damp and wet substrate
Product Data Sheet Show all documents

Usage

Waterproofing of tunnels, basement and all kinds of below ground structures against groundwater.  

Advantages

  • Based on virgin material with consistent quality
  • With signal layer to indicate damages
  • High resistance to aging
  • High tensile strength and elongation
  • Resistant to natural aggressive mediums in ground water and soil
  • High resistance to mechanical impact
  • High dimensional stability
  • High flexibility in cold temperatures
  • Optimized workability, thermally weldable
  • Suitable for installation on weak substrate
  • Can be installed on damp and wet substrate

Packaging

Sikaplan® WP 1120-20HL standard rolls are wrapped individually in a yellow PE-foil. The roll dimension is 2.0mm (Thickness) x 2.0m (Width) x 15.0 m (Length).

Roll weight is around 78kg/roll.

Colour

Top layer: yellow
Bottom layer: dark grey

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Tested According to various EN standards
Product Information

Shelf life

5 years from date of production in unopened, undamaged and original packaging.

Storage conditions

Rolls must be stored in the original package with a horizontal position on pallet and protected from direct sunlight, rain and snow. Do not stack pallets of rolls during transport or storage.

Visible Defects

Pass

EN 1850-2

Overall Thickness

2.0 (-5/+10%) mm

EN 1849-2

 

Straightness

≤ 75 mm/10 m

EN 1848-2

Mass per unit area

~ 2.600 (-5/+10%) kg/m2

EN 1849-2
System information

System Structure

Ancillary products:
- Sikaplan® WP laminated metal for pieces
- Sikaplan® WP Disc
- Sika® Waterbar, Type AR and DR for fixing pieces and waterproofing concrete joints
Technical Information

Tensile strength

Longitudinal (MD)

17.0 (±2.0) N/mm2

Transversal (CMD)

16.0 (±2.0) N/mm2

Elongation

Longitudinal (MD)

≥ 300 %

Transversal (CMD)

≥ 300 %

Resistance to Impact

≥ 750 mm

EN 12691

Resistance to Static Load

≥ 20 kg

EN 12730 (Method B 24 h / 20 kg)

Watertightness

Pass

EN 1928 B

Foldability at Low Temperature

-25 °C

EN 495-5

Tear Strength

≥ 500N (Nail shank)

EN 12310-1

Dimensional Change after Heat

≤ 2 %

EN 1107-2

Durability of Watertightness against Ageing

Pass

EN 1296(12 weeks)
EN 1928 B (24h/60kPa)

Durability of Watertightness against Chemicals

Pass

EN 1847 (28d,23°C)
EN 1928 B (24h/60kPa)

Accelerated Ageing in Alkaline Environment

Pass

Appendix C (24 weeks/90°C)
EN 12311-2

Reaction to fire

Class E

EN 13501-1

Exposure to Bitumen

No performance determined

EN 1548 (28d/70°C)
EN 1928 A

Application

Application Information

Ambient Air Temperature

+5 °C min./ +35 °C max.
Application steps

SUBSTRATE QUALITY

In-situ concrete:
Clean, sound and dry, homogeneous, free from oils and grease, dust and loose or friable particles.


Shotcrete:

The profile of the shotcrete surface must not exceed a ratio of length to depth of 5:1 and its min. radius must be 20 cm. The shotcrete surface must not contain broken aggregates. Any leaks must be sealed with Sika® waterproof plugging mortar, or drained with a Sika® FlexoDrain system.

 

Where necessary to achieve the desired profile/surface, apply a fine sprayed concrete layer on the shotcrete surface with a min. thickness of 3-5 cm and aggregate diameter not exceeding 8 mm. Steel (girders, reinforcement mesh, anchors, etc.) must also be covered with a minimum of 4 cm fine sprayed concrete. The shotcrete surface must be clean (no loose stones, nails, wires, etc.). A polypropylene geotextile (≥ 500 g/m2) or a compatible drainage layer must be installed prior to the Sikaplan® WP 1120-20 HL membrane installation.

 

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