TPO Over Existing Flat Roof

Many homeowners opt to install a flat roof when building or remodeling their home, as these types of roofs provide an attractive and low-maintenance option that can be customized to suit a wide range of different environments and architectural styles. However, there may come a time when the existing flat roof needs to be repaired or replaced, which can be challenging if you wish to preserve the original appearance of your home. Fortunately, it is possible to put a TPO membrane over an existing flat roof as long as there is adequate structural decking underneath for support. This approach provides a number of benefits, including increased longevity and enhanced waterproofing properties. A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. The term “flat” is somewhat of a misnomer because flat roofs are not actually completely flat. There is usually a slight slope to them in order for water to run off. But in comparison to other types of roofs, flat roofs are much flatter. They are most often found on commercial and industrial buildings because they are less expensive to build than sloped roofs.  So if your home has an existing flat roof that needs some TLC, consider investing in a TPO membrane – you’ll be glad you did!

Here are the five main reasons why you should install thermoplastic polyolefin:

#1 – Highly durable and resistant to damage from the elements

There are many good reasons to choose a TPO roofing system over an existing flat roof. For one thing, TPO is a highly durable and rugged material that can withstand damage from the elements. This makes it ideal for covering roofs in challenging environments such as coastal areas, where exposure to wind, sun, and precipitation can quickly take its toll on ordinary roof coverings. Additionally, TPO roofs are resistant to moisture and temperature fluctuations, which means they can stand up to even the harshest of weather conditions. Finally, being made of thermoplastic synthetic materials, TPO roofs are not prone to losing their structure or strength over time. All in all, investing in a TPO roofing system is a smart choice for anyone looking to protect their property against damage caused by weather and other environmental factors.

#2 – Easily customizable and can be designed to complement the style and aesthetic of your building

these types of roofs are highly customizable and can be designed to complement the style and aesthetic of your building. Whether you want a sleek, modern finish or something more classic and understated, a TPO roof is the perfect solution. In addition, unlike some other roofing materials such as asphalt shingles or concrete tiles, TPO roofs are extremely durable and require minimal maintenance over time. Ultimately, given its many benefits for both functionality and aesthetics, putting a TPO roof over an existing flat roof is one of the best options for any building owner.

#3 – Relatively easy and inexpensive to install

At present, the average cost per square foot to install TPO roofing over an existing flat roof is approximately $4-6. This relatively low price is due in large part to the fact that TPO is a less expensive material than metal, shingles, or tiles. Compared to these other roofing options, TPO provides good protection and water resistance at a much more affordable price point. Furthermore, this cost can vary slightly depending on factors like labor costs and geographic location, so it is important to consider these variables when estimating the total cost of installing TPO roofing. Ultimately, however, regardless of these individual factors, the bottom line remains that TPO roofing tends to be significantly cheaper than alternative materials while still delivering reliable performance and durability.

#4 – Highly energy efficient and help keep energy costs down

TPO roofs are a highly energy efficient choice when it comes to roofing materials. Made from a thermoplastic polymer, these roofs are weather resistant and sturdy enough to withstand extreme temperature fluctuations without losing their structural integrity or becoming damaged. In addition, TPO roofs can help keep energy costs down by preventing heat loss during the winter months and reducing heat gain during the summer. Because of their superior insulating properties, TPO roofs are able to help homeowners achieve lower energy bills while also decreasing their carbon footprint. Ultimately, whether you’re building a new home or replacing an existing roof, choosing TPO will help ensure that your property is both comfortable and eco-friendly in the long run.

#5 –  Longer lifespan than most roofs

Most roofing materials have a lifespan of around 20 years. However, TPO roofs often last 30 years or more. This is because TPO is a very durable material that is resistant to both UV radiation and extreme temperatures. In addition, TPO roofs are also less likely to suffer from leaks or other damage. As a result, they require far less maintenance than most other types of roofs. For all these reasons, TPO roofs are an excellent choice for any building that needs a long-lasting and low-maintenance roof.


As you can see, there are several reasons why you might want to consider installing TPO over an existing flat roof. TPO can stand up to almost anything that nature throws at it, they are easily customizable and inexpensive. Ultimately, if you’re in need of a new flat roof or want to upgrade your existing one, then TPO is an excellent choice that you won’t regret making.