For one, water is extremely heavy. When water pools on your roof, the weight will cause unnecessary and excessive strain on the roof structure as well as other parts of the building such as
balcony and
car porch which weakens the structural integrity of the building.
Moreover, water will slowly seep into the roof and corrode away the structure from the inside out. Water will also leak into the building areas such as
bathroom, kitchen and bedrooms thus causing extensive water damage to the furniture and general fixtures within the building.
Waterproofing prevents water from seeping into the porous material of the roof. Typically, there are a few methods such as cementitious waterproofing method,
polyurethane membrane and
rubber waterproofing method. All these methods have their own individual advantages in effectively preventing water damage and mould from occurring on the rooftop.
