If you have a flat roof in serious need of replacement, here are your choices:
You have many flat roofing options, from simple patch work to a full structural overhaul. You may decide that your existing flat roof is too expensive and that you want to replace it. Whether you’re replacing single-layered membrane roofing or thermoplastic sheet roofing, here’s what you might expect when considering your roofing solution in Toronto:
Single Layer System – these roofs have a single membrane applied over a base membrane that is installed by cutting and taping seams. Single layered roofs have a short lifespan, but they are great if you’re replacing an entire roof. The cost of this solution is slightly more than the traditional pitched roof, but the lifespan is much longer and the installation is easier. The drawback to this type of roof is the tendency for moisture to seep underneath the surface of the membrane. If it becomes too wet, it can be unsightly and can also be a health risk.
Membrane Systems – these flat roofing systems consist of a polyethylene waterproof layer over the wood, asphalt, or composite membrane. This membrane provides several advantages. It allows the homeowner to have a much longer lifespan, because the insulation has built in protection from moisture and acts as an effective sound barrier. The polyethylene will also provide greater energy savings due to its material, which reduces heat transfer through the roof. In addition, these membranes are quite easy to install, require little maintenance, and provide superior sound insulation compared to other types of membranes.
Asphalt membranes offer excellent long term performance, but the short term costs associated with this option are very expensive. These roofs are usually quite durable, but there is the potential for water ingress. If the roof is damaged or partially damaged, it is often necessary to replace the asphalt membranes with a bitumen roof repair system. A bitumen roof repair system consists of steel sheets tied together with tar/thick wire, which can easily rip through the many layers of the asphalt membrane.
Another solution that offers excellent durability and energy efficiency is flat and rolled roofing systems. This type of system includes a thick layer of tar and gravel, which is then installed over a thin layer of concrete. Because tar is so durable, this system can last for many years before needing to be replaced. The gravel added to the asphalt makes it more durable and helps to eliminate slippage.
Flat roofing leaks happen for many reasons. Poorly maintained flat roofs leak because of poor installation, poor ventilation due to lack of proper venting and poor flashing. Sometimes the flat roof leaks are caused by metal flashing around the edge of the roof, which can flake away and expose the shingles underneath. Other times flat roofs leaks are caused by improper pitch and coverage. Even condensation and rain can cause leaks, so it is important to make sure your roof is pitched to avoid these problems.
There are many options available to reduce the risk and expense associated with roofing system failures. However, if your roof has proven to be a problematic investment for you or your business, it may be time to consider a new roof system from a Toronto roofing company. A qualified professional will be able to give you a full inspection, which will help you identify areas of the roof that may be in need of repair or replacement.
Once you have identified several areas of the flat roof that may require repair or replacement, a roofing company will schedule an inspection. During the inspection the company will look for signs of replacement needed including, but not limited to, weak flashings, signs of water damage, missing or broken shingles, missing or cracked shingles, and other evidence of wear and tear. They will also evaluate your roof’s lifespan and suggest a solution if needed. A good roofing company should be able to provide you with a comprehensive report detailing their findings and recommendations. If your roof’s lifespan is less than 20 years, a roof inspection is necessary.
The third main component that can contribute to the likelihood of premature roof failure is the presence of existing drainage problems. Drainage systems are designed to move excess water away from the home or building to prevent water from building up on the foundation. Unfortunately, sometimes drains get backed up, causing pools of stagnant water where water is accumulating and eventually reaching the roofing membranes. This is one of the most common causes of leaking and punctures in flat roofs.
Flat roofs present an opportunity to save money and reduce energy bills by identifying and correcting problems before they escalate. A qualified, experienced and professional roofer can provide you with an estimate for repairing your roof. You can also learn more about your roof’s lifespan, what its potential to leak and absorb, and how it can be repaired quickly and more cost-effectively.