Traditional waterproofing methods typically involve using solid materials such as bituminous coatings, cementitious products, or sheet membranes. Here’s a brief overview of some common traditional waterproofing methods compared to liquid waterproofing:

1. Bituminous Coatings: These are asphalt-based waterproofing coatings applied hot or cold to surfaces. They form a thick, impermeable barrier when cured. Bituminous coatings are often used in below-grade applications like basements and foundations.
2. Cementitious Waterproofing: Cementitious waterproofing products consist of a blend of cement, sand, and additives that create a rigid, waterproof layer when mixed with water and applied to surfaces. They are commonly used in areas such as swimming pools, tanks, and concrete structures.
3. Sheet Membranes: Sheet membranes are pre-formed waterproofing materials typically made from bitumen, modified bitumen, or synthetic materials like PVC or EPDM. They are laid on surfaces and heat-welded or adhered to create a continuous waterproof barrier. Sheet membranes are commonly used in roofing and below-grade applications.
4. Hybrid Systems: Some traditional methods may also involve hybrid approaches, combining multiple materials such as membranes with cementitious coatings or bituminous layers to achieve specific waterproofing requirements.

In contrast, liquid waterproofing systems are applied as liquid coatings that dry to form a seamless, flexible membrane. They offer advantages like ease of application, versatility over various substrates, and the ability to bridge cracks and accommodate structural movements. Liquid waterproofing is often preferred for its durability, quick application and curing times, and ability to conform to complex shapes and details, making it suitable for a wide range of construction and renovation projects.