Mapei Mapegum WPS | Liquid Waterproofing Tanking Membrane
Mapei Mapegum WPS is a professional-grade, fast-drying liquid tanking membrane designed for internal waterproofing of bathroom and shower walls and floors. This solvent-free synthetic resin paste creates a seamless, flexible barrier essential for substrate protection before installing ceramic tiles or natural stone.
- Ideal For: Bathrooms, Wet Rooms, and Kitchens.
- Drying Time: Ready for tiling in 12–24 hours.
- Sizes: Available in 10kg and 20kg tubs for small to large projects.
- Safety: EC1 Plus certified (Very low VOC emissions).
Why Use Mapegum WPS for Bathroom Waterproofing?
Ensuring a watertight seal is the most critical step in any tiling project. Mapegum WPS offers unique advantages for both DIYers and professional contractors:
- High Elasticity: Functions as an anti-fracture membrane, bridging cracks up to 1mm to prevent leaks caused by structural settling.
- Thixotropic Formula: Easy to apply on vertical surfaces without sagging or dripping.
- Multi-Surface Bonding: Compatible with plasterboard, gypsum, cementitious renders, and marine plywood.
How to Apply Mapegum WPS Tanking System
For a British Standard compliant installation, follow this 4-step system:
- Substrate Preparation: Ensure the area is dry and clean. Highly absorbent surfaces like plaster require Mapei Primer G to ensure proper adhesion.
- Joint Sealing: Waterproofing fails most often at corners. Embed Mapeband Waterproof Tape into the first wet coat of Mapegum WPS at all wall-to-floor junctions.
- Double Coat Application: Apply the first coat with a roller or brush. Once touch-dry (approx. 1-2 hours), apply the second coat crossways to the first.
- Curing & Tiling: Wait 12–24 hours before applying tile adhesive.
Technical Data & Coverage
| Feature | Technical Specification |
|---|---|
| Application Temperature | +5°C to +35°C |
| Consumption Rate | Approx. 1.2 kg/m² for two coats |
| Final Dry Thickness | Minimum 0.5mm |
| Wait Time (Tiling) | 12–24 hours |
| VOC Emissions | EC1 Plus (Very Low) |
| Packaging | 10kg / 20kg Tubs |
Frequently Asked Questions (FAQ)
Two coats are mandatory for a reliable waterproof seal. Ensure the second coat is applied perpendicular to the first to guarantee total coverage.
Yes. Priming stabilizes the surface. Use Mapei Primer G for absorbent surfaces or Eco Prim T Plus for non-absorbent surfaces like existing tiles.
No. Mapegum WPS is for internal wet areas not subject to constant immersion.
Yes. Its high flexibility allows it to withstand the expansion and contraction of substrates used with underfloor heating systems.
