Interlock colour sealant in Al Nahda refers to the use of sealer through which colour is sealed and interlocked inside concrete so as to make sure they do not lose their tint over time. Colour sealers are mostly used for aesthetic as well as functional reasons whereby the intensity of the colour on the concrete is increased by intensifying the paver colours. Some sealers are known to add a glossy sheen or a wet look to the concrete as well. These sealers have also been known to prevent stains on concrete as well as help in the stopping of unwanted growth of weeds and vegetation.