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Flat roofing systems are a common type of roof that you'll find on most commercial and residential properties because they are reliable, practical, and have a contemporary appearance. Another reason why they are familiar is that they are easier to install and, in many cases, don't require so much upkeep and maintenance.

Also, they are a perfect choice for anyone looking for a minimalist design on their property. But what is involved in replacing a flat roof? Generally, you may need to replace your flat roof after 15 to 20 years. Fortunately, the replacement process is straightforward and cost-effective.

This article explains everything you should know about replacing a flat roof. You'll learn more about the budget, materials, timeframe, and signs to look out for to see that you need to replace your flat roof.

Materials for Flat Roofs

The starting point for a flat roof replacement project is to get suitable materials, and it's important to note that there are different flat roof materials, each of which has unique benefits. These materials include the following:

EPDM rubber

This is a durable and robust synthetic rubber made from propylene and ethylene obtained from natural gas and oil. It is a copolymer with elastomeric properties, implying that it is both elastic and viscous. This guarantees that the material will return to its original form after contraction and expansion.

It is one of the most popular options that people use on their building projects, and this is due to the environmental benefits it offers. Another reason why it is a preferred choice is because it can be recycled.

When installed properly, it provides incredible insulative properties, including its ability to reflect heat during summertime and retain heat in winter. In addition, EPDM rubber offers high resistance to UV radiation and different weather conditions. Most of all, it's durable, reliable, and long-lasting.

Glass Reinforced Plastic (GRP)

This is also known as fiberglass roofing and is formed by applying catalyzed resin to decking, after which a fiberglass mating layer is placed on top. The second layer is added to make it fire-resistant and increase the system's durability.

These roofs are widely recognized for their ability to last up to 25 years, which is amazing. They can withstand different types of weather conditions, and they are straightforward to maintain. They are flexible, and the installation process for these roofs is clear. The material is also resistant to water, especially when installed correctly.

Self-adhesive felt

This is a perfect option if you want to do the replacement yourself. The felts can be laid directly without requiring naked flames. Its installation process is safe, fast, and easy, and you may not need to spend extra on a professional installer. The fantastic thing is that the material is weather resistant and durable, and you can rest assured that it will last up to 15 years, especially when fitted correctly.

Torch-on felt

The application of this type of felt requires the use of a naked flame. It is made of three layers of modified bitumen, and this is to make the roof sturdy and robust. This type of material is widely recognized for its reliability and durability and ability to withstand different weather conditions, including strong winds, heavy rains, and UV rays.

How to Know Your Flat Roof Needs Replacing

Apart from knowing the different types of roofing materials for flat roof replacement, it's also essential to know the signs to look out for, and these signs include the following:


The first thing to look out for is any sign of leakages. In some cases, this requires you to perform leak repairs, but in extreme cases, you may have to replace the entire roofing system. Leakages can occur due to multiple factors, including incorrect installation, and this is an issue that you should always pay attention to.

Sagging, pooling, and flooding

Other issues to look out for include sagging, pooling, and flooding. In minor cases, you may only need to replace part of the roofing system. However, if it's a long-term issue you have been experiencing, you should get a replacement immediately.

Stretching, blistering, cracking, splitting, and punctures

In cases where the roofing system is exposed to extreme weather conditions and UV radiation for a prolonged period, it can start to crack, stretch, blister, or split. This is a common issue with EPDM, and it may affect the structural integrity of your roof and reduce its lifespan.

Ready to Upgrade Your Roofing System?

You might want to replace your roofing system for many other reasons, such as the fact that other better options are available on the market. This includes high-quality options and technological advancements that further increase the roofing system's lifespan.

Cost of replacement

Like with every other project, it's essential to consider the cost of materials, tools, and any additional costs you may incur when preparing your budget for the project. The type of roofing materials you choose is also a factor that can influence the project's cost. Therefore, it's important to have all of this in mind.

Another thing to consider is that there are cost variations across different brands. The brand also influences the quality of the materials; in some cases, low-quality brands are usually the more affordable options. However, they typically become more expensive in the long run, requiring frequent maintenance.

Another factor influencing the cost is the project's scale and the property's size. More significant properties will generally cost more to replace than smaller properties. EPDM rubber roofs are generally more expensive than felt and GRP roofs.

Duration of replacement

The installation timeframe also depends on the type of flat roof you choose. You will need to factor in the time to remove the old roof and install the new roof. Another factor that influences the timeframe of the installation process is the material used, as well as the experience of the roofing contractor.

If you're doing it yourself, you might spend more time performing the installation process than when you hire a professional roof installer. Another thing worth noting is that the methods applied for each roofing material differ. This can also influence the time it would take to complete the roof replacement process.

Why Hire an Experienced Roofing Contractor?

One of the most vital aspects of a roof replacement project is hiring a roofing contractor with experience and a good reputation. This can impact every aspect of the roofing project. Therefore, it's important to take time and hire a contractor with experience in replacing flat roofing systems.

Making wrong hiring decisions will only put your investment at risk and prevent the new roofing system from lasting up to its expected lifespan. When hiring a roofing contractor, choosing a roofing company that provides flat roof replacement services for residential and commercial roofs is advisable. You should also check their rates and ensure they align with your budget.

In addition, you'll also need to check whether the contractor offers a workmanship warranty. It's very easy to tell the quality of the flat roof replacement service you get from the rate they offer. To ensure that you won't need to replace your roof frequently, especially if it's a flat roof, you'll need to perform maintenance regularly.

This is because flat roofs generally require more maintenance, unlike other roofs. However, it also offers many benefits, like enhancing the aesthetic appeal of your property. With property maintenance, your flat roofing system can last between 15 to 20 years.

Choose Experts for Your Replacement Project

Choosing flat roofing experts for your roofing project is the most ingenious solution. Their specialized knowledge, experience, access to specialized equipment and materials, cost and time efficiency, peace of mind, and dedication to excellent customer service make them the ideal choice for ensuring a successful flat roofing project.

By entrusting your roofing needs to professionals, you can expect a well-executed, long-lasting, and visually appealing flat roof that meets your specific requirements and exceeds your expectations.

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