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
Usage
The Product is designed for:- Lining of enclosed potable water tanks
- Lining of enclosed non-potable water tanks (sprinkler tanks, etc.)
- 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
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
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 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
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 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:
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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.