Many Kenyan homeowners and developers are increasingly going for the flat roof design.
The flat roof is not only cheaper than the pitched option but it provides an alternative to the overused pitch roof. A flat roof gives much more space on the roof as opposed to regular pitched designs that rely on balconies. This space may be used for entertainment, relaxation, mounting of solar panels, AC units etc. Besides, one does not need to worry about damaging winds destroying the roof.
However, the flat roof also calls for extra care in installation. The biggest challenge is always the possibility of leakage from rainwater. Pitched roofs drain water easily. With a flat roof, you can anticipate puddling following a few days of rain if the roof itself isn’t properly planned or installed. It is critical to involve professionals.
Before embarking on flat roof installation, ensure the roof deck is clean, dry, and free from debris. Repair any existing damage or rot on the roof deck. Install insulation boards if required for energy efficiency.
Lay a vapour barrier to prevent moisture from penetrating the roof. Apply a waterproof membrane or coating. This can include hot asphalt, torch-applied modified bitumen, or a liquid-applied membrane, depending on the chosen roofing material.
Lay the roofing material according to the manufacturer’s instructions. This may involve rolling out and adhering rubber membranes (like EPDM), welding seams for TPO or PVC, or applying layers in built-up roofing.
Ensure proper sealing at edges, penetrations (like vents or pipes), and any other vulnerable areas.
It is also advisable to consider roofing accessories. Install flashing around edges, corners, and penetrations to prevent water ingress. Include drainage elements such as scuppers, gutters, or drains to ensure proper water flow off the roof.
Finally, regularly inspect the roof for signs of damage, pooling water, or wear. Perform necessary maintenance, such as resealing seams or repairing any punctures or tears.
