Product Data Sheet Show all documents

Sikaplan® WT 4220-15 C Felt

1.5 mm thick FPO sheet waterproofing membrane for water tanks with fleece backing

Sikaplan® WT 4220-15 C Felt is a 1.5 mm thick sheet waterproofing membrane. It contains an inlay for restraint, a fleece backing and is based on flexible polyolefin (FPO-PE).

  • Certified for contact with water for human consumption
  • Easy to clean and low maintenance
  • Proven performance over decades
  • Contains no fungicides, heavy metals, halogens or plasticisers
  • Good resistance to ageing
  • Integrated fleece backing cushion/levelling layer
  • Good resistance to microbial degradation
  • Flexible in very cold temperatures
  • Suitable for contact with acidic (soft) water
Sikaplan® WT 4220-15 C Felt Sikaplan® WT 4220-15 C Felt
Product Data Sheet Show all documents

Usage

The Product is designed for:
  • Lining of enclosed potable water tanks
  • Lining of enclosed non-potable water tanks (sprinkler tanks, etc.)
Please note:
  • Do not use the Product in areas where it is exposed to weathering or UV-light.
  • The Product is not suitable for permanent exposure to liquids with temperatures above +40 °C.
  • The Product is not resistant to frequent or permanent exposure to water with a content of free chlorine exceeding 0.8 mg/l.
 

Advantages

  • Certified for contact with water for human consumption
  • Easy to clean and low maintenance
  • Proven performance over decades
  • Contains no fungicides, heavy metals, halogens or plasticisers
  • Good resistance to ageing
  • Integrated fleece backing cushion/levelling layer
  • Good resistance to microbial degradation
  • Flexible in very cold temperatures
  • Suitable for contact with acidic (soft) water

Packaging

Roll width

2 m

Roll length

20 m or specified

Colour

Colour

blue

Top layer surface texture

smooth

Bottom layer surface texture

fleece backed

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • CE Marking and Declaration of Performance to EN 13361 — Geosynthetic barriers — Characteristics required for use in the construction of reservoirs and dams

  • CE Marking and Declaration of Performance to EN 13967 — Flexible sheets for waterproofing - Damp proofing and basement tanking
Product Information

Chemical Base

FPO/PE

Shelf Life

5 years from date of production

Storage Conditions

The Product must be stored in original unopened and undamaged sealed packaging in dry conditions and temperatures between +5 °C and +35 °C. Protect the Product from direct weather exposure. Store in a horizontal position. Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage. Always refer to packaging.

Effective Thickness

1.50 mm (-0.07 mm / +0.15 mm) excluding fleece backing

(EN 1849-2)

Mass per Unit Area

1.80 kg/m² (-0.09 kg/m² / +0.18 kg/m²)

(EN 1849-2)
System information

System Structure

Ancillary products:

  • Sikaplan® WT 4220-15 C

  • Sikaplan® WT 4220-18 H

  • Sikaplan® WT External/Internal Corner preformed 90° PE

  • Sikaplan® W Flat Profile Stainless Steel

  • Sikaplan® WT Fixation Plate PE

  • Sarnafil® T Prep

  • Sarnafil® T Clean
Technical Information

Resistance to Impact

Method A, 500 g falling weight

Watertight at 600 mm drop height

Resistance to Static Load

No perforation at 20 kg for 24 h

(EN 12730)

Resistance to Static Puncture

8.85 kN ± 2.50 kN

(EN ISO 12236)

Tensile Strength

Longitudinal (MD)

2300 N/50mm ± 500 N/50mm

Transversal (CMD)

2300 N/50mm ± 500 N/50mm

Longitudinal (MD)

2300 N/50mm ± 500 N/50mm

Transversal (CMD)

2300 N/50mm ± 500 N/50mm

Resistance to Tearing (nail shank)

Longitudinal (MD)

1750 N ± 175 N

Transversal (CMD)

1900 N ± 190 N

Joint Shear Resistance

> 300 N/50mm

(EN 12317-2)

Foldability at Low Temperature

No cracks at -40 °C

(EN 495-5)

Water Tightness

Method B: 24 hours at 60 kPa

Pass

Microbiological Resistance

Change in tensile strength, aged 16 weeks

< 15 % (MD/CMD)

Change in elongation, aged 16 weeks

< 15 % (MD/CMD)

Durability of Water Tightness against Chemicals

Calcium hydroxide, aged 28 days at +23 °C, tested 24 hours at 60 kPA

Pass

Durability of Water Thightness against Ageing

Aged 12 weeks at +70 °C, tested 24 hours at 60 kPa

Pass

Reaction to Fire

Class E

(EN 13501-1)

Application

Application steps

APPLICATION INSTRUCTIONS

IMPORTANT

Strictly follow installation procedures

Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

SUBSTRATE QUALITY

For information on substrate quality / pre-treatment, refer to the following Sika® method statement:

  • Sikaplan® WT 4220 sheet membrane (PE) system for lining potable water reservoirs

APPLICATION

For information on application, refer to the following Sika® method statement:

  • Sikaplan® WT 4220 sheet membrane (PE) system for lining potable water reservoirs

IMPORTANT

Application by trained personnel

The application of this Product must only be carried out by Sika® trained and/or approved contractors, experienced in this type of application.

IMPORTANT

Ventilation in confined spaces

Always ensure good ventilation when applying the Product in a confined space.

 

IMPORTANT

Testing the water tightness

After the application, test the structure's water tightness according to the specification requirements.

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