The Kenyan architectural scene has evolved, and newer modern styles are being featured on the country’s skyline. Among common trends are flat-roof houses, which are popular for their modern aesthetic, cost efficiency, and the ability to maximize usable space, especially in urban areas.
While flat roof houses are often favored for their sleek design and space-saving benefits, they come with a set of challenges that homeowners should consider. Below are some of the cons of flat roof houses, shedding light on the potential issues that may arise and the long-term implications for homeowners.
Drainage
Unlike pitched roofs, flat roofs do not naturally shed water, making them more prone to water pooling. This can lead to leaks and water damage if the drainage system is not properly designed or maintained.
“To maintain the flat roof aesthetic, the house can only allow a slight slope to drain water,” building contractor Jonathan Kyalo told a local media house.
“Most of the time, the slope will not drain fully the water creating a puddle that will eventually damage the roof,” he added.
Lifespan
Flat roofs typically have a shorter lifespan compared to pitched roofs. The materials used, such as concealed iron sheets or concrete slabs , can degrade faster due to constant exposure to the elements such as excess rainfall.
Structural Limitations
Flat roofs have less stability and ability to withstand weight naturally. The weight of snow, rainwater, or additional rooftop features like gardens or solar panels can put extra strain on the structure of a flat roof. This can lead to structural issues if the roof is not designed to handle such loads.
This makes them costly to build because you will need to compensate elsewhere in the construction to strengthen the building.
Temperature changes
Flat roofs often require additional insulation to manage temperature extremes. Without proper insulation, homes with flat roofs can be more susceptible to heat loss in the winter and heat gain in the summer, leading to higher energy costs.
“Flat roofs absorb heat faster than other roofing styles, which is a problem as most parts of the country are arid and semi-arid,” Kyalo noted.
Property owners must factor insulation costs when building flat-roof houses to avoid excessive energy expenses and ensure comfort throughout the year.
High maintenance costs
Consistent maintenance is vital for flat roofs to prevent complications like leaks, cracks, and water damage. Failure to maintain them can lead to these issues worsening and incurring significant repair costs. Furthermore, flat roofs are susceptible to severe weather conditions, which require ongoing repairs and can be costly, leading developers to avoid this roofing style.
Photo: Courtesy
Nonetheless, flat roofs continue to be a preferred option in commercial and residential design. Here are some of the contributing factors to their ongoing popularity among homeowners:
Versatility
Flat roof house offer versatile design possibilities and can be integrated with various architectural styles, such as modernist, minimalist, and industrial designs.
Maintenance
Unlike pitched roofs, flat roofs are much easier to access, making inspections and repairs simpler and more efficient. Their flat surface makes it easier to check and fix any issues compared to sloped roofs.
Ease of Access
The easy access to flat roofs makes them simpler to clean. Unlike other roof types, homeowners can often handle the cleaning themselves, reducing the need for professional services and saving on costs.
Multiple Uses
Unlike other roofing types, which limit usage options, flat roofs offer the flexibility to create features like rooftop sitting areas, bars or barbecue areas.
Aesthetic Value
Flat roofs contribute to a sleek, contemporary look that is popular in modern architectural designs, featuring minimum aesthetics and allowing for modern elements such as large windows and open floor plans.
Cost-Effective Construction
They typically use fewer materials and require less labor, making them more cost-effective to build compared to pitched roofs. This efficiency in construction can also lead to reduced overall project costs.
Energy Efficiency
When properly insulated, flat roofs can contribute to better energy efficiency by providing a platform for solar panels and green roofing systems.
