Although not commonly found on residential buildings, flat roofs do exist. They also face many challenges that a traditional, sloped roof does not face. As a homeowner, your flat roof will require much more attention and maintenance than a traditional one. The problems can quickly exacerbate and cost you more in repair. Therefore, it is important that you stay afloat of the challenges you be facing and adequately inspect it for any problems.
Flat Roof Problems
The most obvious problem is the lack of slope, which can cause major problems for drainage and the increased potential for water damage. Since there is no slope to promote water runoff, it tends to accumulate water and allow pooling. We all know that water is a roofs worst enemy, causing severe damage that can result in numerous other problems. If the water is unable to drain properly and continues to pool, the result can be severe water damage, leaks into the home and mold problems flat roofs toronto.
It also meets problems with its material base. Since traditional materials do not work well for flat roofs, the materials used come with additional considerations. Typically, a flat roof is unable to provide an adequate seal between rooflines or between any structures that protrude, such as a chimney. Traditional metal flashing is not an adequate material to bridge the gap along roofing structures, which makes sealing breaks in between roof materials more difficult.
Flat Roof Solutions
Since the most important aspect is a water tight seal and weather resistance, many roofers use only one of three proven methods. The most common material is made from a rubber or plastic material, to prevent water penetration. In some cases, you may find it has asphalt shingles, but you can bet there are layers of rubber or plastic underneath.
One of the oldest methods for installing a flat roof is called constructed up roofing. This method involves interchanging multiple layers of tar and water resistant fabrics, which is then covered with gravel. The gravel allows for adequate water drainage and prevents some pooling while the tar and fabric prevent water penetration.
Another method is the modified bitumen method, which involves laying a mineral rich material on top. The bitumen is water resistant and reflects heat from the sun’s rays, resulting in an energy efficient effect.
The rubber membrane method is the last method used to install a flat roof. It consists of laying a durable and thick rubber sheet on the roof. The rubber is naturally water resistant and prevents water penetration.