SikaShield® P24 S 4mm
$71.00
Sale price
$71.00
Regular price
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SikaShield® P24 S 4mm
$71.00
Sale price
$71.00
Regular price
SikaShield® P24 S 4mm
An APP modified bituminous waterproofing membrane reinforced with non-woven polyester fabric. The sand top surface ensures excellent bond for overlying layers. Torch-applied via burn-off film on the underside for a fully bonded installation. Flexible at 0°C and suitable as a base sheet in multi-layer systems under protective layers, tiles, or ballast.
Overview
Specifications
| Property | Value | Standard |
|---|---|---|
| Type | APP modified bituminous waterproofing membrane | – |
| Reinforcement | Non-woven polyester fabric | – |
| Effective Thickness | 4.0 mm ±0.2 mm | EN 1849-1 |
| Roll Width | 1.0 m | – |
| Roll Length | 10.0 m (10 m² per roll) | – |
| Top Surface | Sand | – |
| Bottom Surface | Polyethylene burn-off film | – |
| Flexibility at Low Temperature | ≤0°C | EN 1109 |
| Tear Resistance (nail shank) | 150 N −45 N (longitudinal & transversal) | EN 12310-1 |
| Joint Shear Resistance (longitudinal) | 500 N/50 mm ±100 N/50 mm | EN 12317-1 |
| Joint Shear Resistance (transversal) | 350 N/50 mm ±70 N/50 mm | EN 12317-1 |
| Max. Tensile Force (longitudinal) | 600 N/50 mm −120 N/50 mm | EN 12311-1 |
| Max. Tensile Force (transversal) | 400 N/50 mm −80 N/50 mm | EN 12311-1 |
| Elongation at Max. Tensile Force | 30% −15% (longitudinal & transversal) | EN 12311-1 |
| Ambient Temperature | +5°C min / +40°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
- Waterproofing membrane for balconies and terraces under heavy protection layers (tiles or gravel)
- Flat and sloping roofs under protective layers or ballast
- Car park decks
- Wet areas
- Basements and below-ground structures
- Horizontal reinforced concrete slabs, decks, podiums, and protrusions
- Vertical reinforced concrete walls
- Base sheet in multi-layer waterproofing systems
- Note: Not suitable for roofs permanently exposed to UV radiation
Advantages
- Easy to install by torching method
- Fully bonded application
- Flexible in cold temperatures (≤0°C)
- Good durability and mechanical properties (tensile, tear, shear)
- Can be painted immediately after application
- Insulation panels can be bonded directly without special adhesives or mechanical fixings
- Sand surface ensures excellent bond for overlying layers
Packaging
- 1 roll = 1.0 m wide × 10.0 m long (10 m²)
Colour
- Top surface: Sand
- Bottom surface: Polyethylene film
Product Details
Product Information
| Property | Detail |
|---|---|
| Composition | APP modified bitumen with non-woven polyester fabric reinforcement |
| Effective Thickness | 4.0 mm ±0.2 mm (EN 1849-1) |
| 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 / +40°C max |
| Substrate Temperature | +5°C min / +40°C max |
| Relative Humidity | Max. 80% |
| Side Overlap | Min. 100 mm |
| End Overlap | Min. 150 mm |
Application Steps
- Substrate Preparation: Surface must be uniform, firm, smooth, and free from sharp protrusions, grease, laitance, oil, dust, and loose particles. Must be clean and dry.
- Priming: Apply the appropriate Sika® primer at the required consumption onto the prepared dry surface. Allow the primer to dry completely before membrane installation. Contact Sika Technical Service for primer selection guidance.
- 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.
- Torching: Heat the substrate and the burn-off film on the underside of the membrane with a gas burner. When the backing film starts to melt, roll the membrane forward and press firmly against the substrate. Keep the flame moving to avoid overheating (polyester reinforcement melts at +260°C). A bead of melted bitumen must be visible along the full length of all overlaps.
- Overlaps: Overlap sides by min. 100 mm and ends by min. 150 mm. At end overlaps, cut a 100×100 mm corner at 45°. Weld overlaps until a 10 mm trickle of melted mixture is visible along the overlap line.
- 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.
- Suitable Substrates for Torching: Concrete, perlite screed, bituminous membranes with smooth surface, compatible coatings, brick masonry, cementitious screeds.
- Footwear: Use flat-profile footwear only – spikes or sharp protrusions may puncture the membrane.
Maintenance
- Check the functionality of auxiliary works, flashings, drainage outlets, and overflow pipes regularly.
- Remove leaves, moss, and vegetation that could cause ponding and overload the drainage system.
- Arrange periodic inspections of the membrane and detailing to maintain waterproofing performance throughout its lifespan.