Waterproofing is not just about preventing leaks — it is about safeguarding the structural integrity of a building. This guide from The Waterproofers Association covers why waterproofing matters, the main types of materials, and where each is applied.
Why Waterproofing Matters
- Increased structural lifespan — proper waterproofing prevents water-related deterioration.
- Prevention of water damage — infiltration weakens structures, causes mould and compromises safety.
- Reduced maintenance — effective waterproofing minimises repair costs.
- Energy efficiency — proper insulation and waterproofing contribute to energy savings.
Types of Waterproofing Materials
1. Cementitious Waterproofing
A mix of cement and additives forming a thick, flexible layer. Used in internal areas like bathrooms and kitchens. Easy to apply with readily available materials, but not suited to external exposure.
2. Liquid Waterproofing Membrane
Liquid coatings applied to surfaces such as roofs, balconies and terraces. Seamless and adaptable to irregular shapes, but requires professional application.
3. Bituminous Coating
Asphalt-based coating used on roofs and foundations. Excellent waterproofing properties, but requires skilled installation.
4. Polyurethane Liquid Membrane
A synthetic polymer-based liquid, ideal for roofs and balconies. UV-resistant and durable, though costlier than other options.
5. Brick Bat Coba
A traditional method using brickbats and mortar for flat roofs and terraces. Economical and effective, but labour-intensive.
Areas of Application
- Roof waterproofing
- Basement waterproofing
- Foundation waterproofing
- Balconies and decks
- Interior wet areas
- Exterior walls
- Terraces
Disclaimer: This guide is for educational purposes. Always consult professionals for specific waterproofing needs.