Most houses in Karachi have flat RCC roofs that face strong sun and heavy rain. Choosing the right waterproofing system depends on the roof condition, budget and expected movement.
Polyester sheet system
A polyester fabric is embedded between layers of waterproofing coating. It bridges small cracks and is a favourite for houses and apartments.
Elastomeric acrylic coating
A stretchable white or grey coating that also reflects sunlight. It is easy to maintain and suits light roofs.
Bitumen membranes
APP or SBS sheets give heavy duty protection and are common on commercial roofs.
Old brick bat coba
Coba roofs can be upgraded with a modern membrane on top instead of being removed.
The best way to decide is a site inspection. Call Royal Chemical Service for a free visit and written quotation.