Did you know there are different types of flat roofs? And each type has its benefits and drawbacks. That’s why it’s important to know about all the different types before making a decision on which one to install on your property.
A flat roof is a roof that has a generally level surface, although it may be slightly pitched to allow for drainage. Flat roof systems are most common in commercial and industrial buildings but can also be found on some residential properties.
In this article, we’re going to look at the top 4 types of flat roof systems so that you can make an informed decision about which one is right for your property.
1.0. Built-Up Roofing
Built-up roofing (BUR) is a type of flat roof system that consists of multiple layers of asphalt, tar, or other materials. Built-up roofs consist of multiple layers of waterproof ply sheets held together by hot tar.
These roofing layers then have a layer of gravel or smooth river stone applied to them for stability and durability. Many people think that built-up roofs are a cheaper option than flat roofs, but there are many disadvantages to this type of roofing system.
1.1. Benefits
- Gravel is a great fire retardant.
- It’s ideal for windows and decks that look out over the roof.
- It’s also the most cost-effective of the four roof types.
1.2. Drawbacks
- It’s a lot of weight
- Joists might have to be reinforced on occasion.
- It’s smelly and inconvenient to install.
- Occupied residences are not recommended for this method of installation. Because it isn’t a do-it-yourself project, finding the source of leaks is difficult.
- Gutters and scuppers can get blocked by gravel.
2.0. Modified Bitumen Roofing
Modified bitumen roofing is a type of asphalt roofing that consists of multiple layers of asphalt-based materials. The bottom layer is typically a fiberglass or polyester mat, which is then topped with one or more layers of asphalt and a top layer of either mineral granules or a weatherproof coating.
2.1. Benefits
- One of the benefits of modified bitumen roofing is that it is easy to install, especially when compared to other types of roofing systems.
- Modified bitumen roofing is also very durable.
- Modified bitumen roofing can be adapted to various roof types and styles, making it a versatile option for many projects.
- Modified bitumen roofing can also help to improve the energy efficiency of a building, as it helps to reflect heat away from the interior.
- Modified bitumen roofing is very cost-effective compared to other roofing options and can save you money on your energy bills.
2.2. Drawbacks
- It is not as aesthetically pleasing as other types of roofing, such as metal roofing.
- It can be susceptible to damage from high winds and severe weather conditions.
- If not installed properly, modified bitumen roofing can also leak, leading to water damage inside your building.
3.0. Metal Roofing
Metal roofing is one of the market’s most durable types of flat roofing systems. Metal roofs are typically made from steel, aluminum, or copper and can last for decades with proper maintenance. Metal roofs are also great at reflecting heat, which can help keep your home cooler in the summer months.
3.1. Benefits
- Longevity – Metal roofs are built to last, with some types boasting a lifespan of over 50 years.
- Energy efficiency – Metal roofs reflect heat, keeping your home cooler in the summer and reducing energy bills.
- Low maintenance – Metal roofs are easy to keep clean and require little maintenance over their lifespan.
- Fire resistance – Metal roofs are non-combustible and have a high fire rating, making them a safe choice for your home.
- Wind resistance – Metal roofs are built to withstand high winds, making them ideal for homes in hurricane-prone areas.
3.2. Drawbacks
- Cost – Metal roofs can be more expensive than other types of roofing, though the long lifespan offsets the cost.
- Noise – When it rains or hails, you may hear more noise from a metal roof than from other types of roofs.
- Dent resistance – While metal roofs are very durable, they can be dented by hail or falling tree limbs.
4.0. PVC Roofing Systems
A PVC roofing membrane is made up of a continuous filament lattice called a Scrim that is laminated with UV-resistant PVC thermoplastic. PVC membranes are a modern, highly efficient roofing material.
PVC is resistant to most chemicals, making it a reliable option for harsh environments such as rooftops. In fact, many PVC roofs continue to function well after more than three decades of use.
4.1. Benefits
Some of the benefits of PVC roofing systems include:
- Durable – PVC roofs can last for decades with proper maintenance.
- Energy efficient – A PVC roof can reflect up to 85% of the sun’s rays, helping keep your building cooler and reducing energy costs.
- PVC is easily recycled, which benefits the environment and your wallet.
- Some PVC roofing systems have no waste because fabrication scrap can be reused in other parts of the system or building.
- Low maintenance – PVC roofs are easy to clean and don’t require frequent repairs.
- Environmentally friendly – PVC roofs are made from recycled materials and are 100% recyclable.
4.2. Drawbacks
PVC roofs do have a few drawbacks, including:
- High initial cost – PVC roofs can be more expensive than other types of roofing systems, but they last longer and are more energy efficient, so they may save you money in the long run.
- Susceptible to punctures – While PVC roofs are very tough, they can be punctured by hail or falling debris.
- Limited color selection – PVC roofs only come in white or light colors, so they may not be the best choice if you want a roof that makes a statement.
To Repair or Install Flat Roof Systems? Contact Valet Works
If you want to repair or install flat roof systems in your buildings, Valet Works is the only solution. Valet Works most experienced technicians will quickly and efficiently fix or install your flat roof system. All of our work is guaranteed, so you can be sure that you’re making a wise decision when you choose us, and we aim to give exceptional customer service. So Contact us today to have the high-rated work!