Waterproofing is the process of making an object or structure waterproof or water-resistant so that it remains relatively unaffected by water or resisting the ingress of water under specified conditions.
Water-resistant and waterproof often refer to penetration of water in its liquid state and possibly under pressure, whereas damp proof refers to resistance to humidity or dampness.
Cementitious products are probably the easiest waterproofing materials to use. They are easy to mix and apply. If you plan to use this material, a long-handled brush will make your life easier. Use acrylic additive (a white, milky liquid) to mix in with the cement product. You’ll get better bonding and a more solid, durable coating.
The chief disadvantage is that cementitious products don't have stretchability , so can not tolerate joint or crack movement.
This is the process of waterproofing a roof by the application of a specialist liquid coating. It is suited to all types of roof. Liquid waterproofing involves the application of a monolithic, fully bonded, liquid based coating to a roof. The coating cures to form a rubber-like elastomeric waterproof membrane, capable of stretching and returning to its original shape without damage. Such coating systems are usually reinforced with secondary materials such as glass-reinforced plastic to provide additional tensile strength. The coatings can be applied over most traditional roofing materials,
The process of liquid roofing provides a cost-effective method of making a new or existing roof waterproof. It can deliver up to 20 years performance depending on the coating system employed. It is estimated that liquid roofing is 70% less expensive than overall roof replacement in refurbishment situations.