Overview
Bathroom waterproofing membranes are essential materials applied to wet areas like bathrooms, toilets, and shower zones to prevent water leakage, mold growth, and structural damage. These membranes create a seamless, flexible barrier that blocks water from seeping into walls and floors.
Main Uses
- Waterproofing under bathroom tiles
- Sealing shower floors and walls
- Preventing moisture seepage into concrete or block walls
- Protecting subfloors and slabs in wet areas
- Ensuring long-term hygiene and durability in wet spaces
Types of Waterproofing for Bathrooms
| Type | Description |
|---|---|
| Liquid Membrane | A brush-on or roller-applied waterproof coating that cures to a rubber-like layer |
| Sheet Membrane (PVC/TPO) | Pre-formed sheets installed beneath tiles for added durability |
| Bituminous Coating | Bitumen-based liquid waterproofing, ideal for sub-tile layers |
| Cementitious Waterproofing | Two-component mixture ideal for concrete surfaces in bathrooms |
Typical Specifications (Liquid Membrane)
| Property | Value |
|---|---|
| Form | Liquid (ready to apply or 2-part) |
| Thickness (after cure) | 1.0–2.0 mm |
| Waterproof Rating | 100% (zero leakage) |
| Crack-bridging | Yes |
| Drying Time | 4–8 hours between coats |
| Full Cure Time | 24–48 hours |
| Application Tools | Brush, roller, or trowel |
| Tile Compatibility | Compatible with tile adhesives |
Advantages
- Flexible and seamless waterproofing barrier
- Strong adhesion to various substrates: concrete, cement board, plaster
- Easy to apply in tight or complex bathroom spaces
- Protects tiles and grout from moisture degradation
- Prevents fungal and mold formation
- Cost-effective and reliable waterproofing system
Application Areas
- Bathrooms and toilets
- Shower areas and wet rooms
- Wash basins and kitchen wet zones
- Bathtubs and surrounding walls
- Public and commercial restroom facilities
Installation Tips
- Clean and dry the surface thoroughly before application
- Use primer if required for better adhesion
- Apply at least two coats, allowing drying time between each
- Extend membrane 10–15 cm up the wall to cover splash areas
- Protect the membrane before tiling by allowing full curing
- Ensure corners and joints are properly sealed with fabric tape if needed
