Name: Sika SikaShield W159 ED 1.5mm
Brand: Sika
Price: 86.20 USD
Availability: InStock

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Sika rolls and a trowel on a construction site with a fire burning in the background.

Person working on a roof with Sika Shield waterproofing materials

Sika SikaShield W159 ED 1.5mm

$86.20

SikaShield® W159 ED 1.5mm

A polymer modified bituminous waterproofing membrane wet-applied to concrete using adhesive mortar SikaShield® W1. Flame-free installation makes it safe for confined spaces. Reinforced with cross-laminated PE film for high mechanical performance. Fully bonded and watertight against lateral water migration. Can be applied on wet concrete.

Overview

Specifications

Property	Value	Standard
Type	Polymer modified bituminous waterproofing membrane (wet-applied)	–
Reinforcement	Cross-laminated Polyethylene (PE)	–
Effective Thickness	1.5 mm ±0.15 mm	–
Roll Width	1.0 m	–
Roll Length	20.0 m (20 m² per roll)	–
Top & Bottom Surface	Removable foil liner	–
Foldability at Low Temperature	Unaffected at −25°C	–
Resistance to Static Puncture	240 N ±10%	ASTM E154
Tensile Strength	3 N/mm² ±10%	ASTM D412
Elongation	300% ±10%	ASTM D412
Resistance to Tear	30 N ±10%	ASTM D624
Joint Peel Resistance	400 N/m ±10% (at +23°C)	ASTM D1876
Permeability to Water Vapour	0.008 g/m²/24hr/mm-Hg ±10%	ASTM E96
Resistance to Lateral Water Migration	70 m ±7 m	ASTM D5385/D5385M
Ambient Temperature	+5°C min / +50°C max	–
Relative Humidity	Max. 80%	–
Shelf Life	12 months from date of production	–
Storage	Dry, +5°C to +35°C, vertical position, original packaging	–

Usage

Basements and below-ground structures
Vertical reinforced concrete walls
Single and strip foundations
Single layer under heavy protection
Base sheet in multi-layer waterproofing systems
Note: Not suitable for roofs permanently exposed to UV radiation

Advantages

No-torch application – safe for confined spaces
Fully bonded system for reliable waterproofing
Watertight against lateral water migration (70 m resistance)
Can be applied on wet concrete
Fast and easy installation
Flame-free application
Requires minimal surface preparation
High impact resistance (240 N static puncture)

Packaging

1 roll = 1.0 m wide × 20.0 m long (20 m²)

Colour

Top and bottom surface: Removable foil liner

Product Details

Product Information

Property	Detail
Composition	Polymer modified bitumen with cross-laminated PE reinforcement
Effective Thickness	1.5 mm ±0.15 mm
Shelf Life	12 months from date of production
Storage Conditions	Dry, +5°C to +35°C, stored vertically, do not stack pallets

Application

Application Information

Parameter	Value
Ambient Temperature	+5°C min / +50°C max
Substrate Temperature	+5°C min / +50°C max
Relative Humidity	Max. 80%
Side Overlap	Min. 100 mm
End Overlap	Min. 150 mm
Curing before backfilling	Min. 24 hours at +25°C
Backfilling deadline	Within 7 days after application

Application Steps

Substrate Preparation: Apply adhesive mortar SikaShield® W1 onto the water-saturated concrete substrate while still wet. Refer to the SikaShield® W1 PDS for full substrate condition requirements.
Alignment: Unroll the membrane and align it. Re-roll before application. Lay membranes parallel to avoid coinciding joints. When applying over another bituminous membrane, straddle the overlaps of the previous layer.
Wet Application: Lay the membrane directly over the wet adhesive mortar. At one end, peel away part of the release liner from the underside. Bond this end to the adhesive and substrate. Continue peeling the liner sideways while bonding the rest of the membrane.
Rolling: Roll the applied membrane surface with a roller from the centre to the edge to remove air bubbles. Push any excess adhesive towards the opposite direction of the sealed side overlap.
Overlap Sealing: If ambient temperature is below +10°C, seal membrane overlaps by heating with a gas torch or hot air to ensure proper adhesion and prevent adhesive trapping under the overlap.
Curing & Backfilling: Allow adhesive mortar to cure for at least 24 hours at +25°C before backfilling. Complete backfilling within 7 days of application.
Detailing: Use a sharp knife to cut around internal/external corners, upstands, vent pipes, drains, and support metalwork. Refer to the relevant method statement for detailing guidance.
Footwear: Use flat-profile footwear only – spikes or sharp protrusions may puncture the membrane.