The concept of liquid waterproofing has been around for 200 years. Original systems began with natural bitumen progressing to today’s complex monolithic fully bonded liquid based coatings. The liquid once cured forms a rubber like waterproof membrane with elastic compounds capable of stretching and returning to its original shape with no damage. Many of these systems such as Sika MTC 18 are usually reinforced with a secondary material such as fibreglass to provide additional tensile strength.
These systems can normally be applied over traditional roofing materials such as felt, asphalt and concrete.
One of the benefits of this system is the relative low cost which, with correct installation, can provide up to 20 years of performance.
Another huge benefit of liquid waterproofing is the ability to encapsulate the surface it is applied to, preserving what is underneath and protect it from weathering – especially desirable when dealing with asbestos.