How Much Does GRP Roofing Cost?

October 13, 2023

How Much Does GRP Roofing Cost?

If you’re considering a roofing project for your home or commercial property, you’ve probably heard about GRP roofing. Commonly known as GRP, glass-reinforced plastic is a popular roofing material known for its durability and longevity. However, before you decide to invest in GRP roofing, it’s essential to understand the roofing costs associated with this option.

Due to its robustness and resistance to weather conditions, GRP is trusted by homeowners and residential building owners worldwide. Alongside a professional installation and frequent maintenance, your GRP roof can last for an extended period of time.

Generally, GRP is slightly more expensive than more traditional, outdated roofing materials. GRP is trusted worldwide by roofing contractors for a reason; its flexability and ability to seamlessly take on the shape of even the most complex roof designs is what makes this product so popular.

Although GRP might have a higher initial price, there’s a lower chance of damage occurring when you choose this reliable solution, ultimately lowering the long-term cost. Generally, cost depends on numerous factors, including the size of your building. Read on to find out more about GRP and how much it costs.


GRP Roofing: What is It?

GRP roofing is a great choice to consider. Essentially, a GRP roofing solution is a fibreglass material made up of polyester resin. Compared to many other materials, GRP materials are beginning to take the lead alongside other different types of liquid roofing systems.

There are plenty of options to consider for your flat roof. GRP solutions are best installed by trained professionals working within the industry. Having your GRP liquid roofing applied by a contractor promises longevity and reassurance. If you’re considering a new roof installation or a replacement, understanding the advantages of a fibreglass flat roof can help you make an informed decision.

GRP roofing is exceptionally durable and weather-resistant. It can withstand harsh conditions, including heavy rain, extreme temperatures, and UV radiation, all of which we experience here in the UK. It’s also resistant to corrosion and doesn’t rot, making it a long-lasting roofing solution.

One of the standout features of GRP roofing is its excellent waterproofing properties. This material is watertight and offers a seamless application, which is ideal if you want an aesthetically pleasing roof space. Best used on flat roofs, GRP is ideal for flat surfaces that are prone to frequent pooling issues.

GRP roofs require minimal maintenance, making them a cost-effective choice and saving you money in the long run. However, we recommend checking your flat roof after a heavy downpour. Regular cleaning and occasional inspections are typically all that’s needed to keep a GRP roof in excellent condition; you can do this yourself or pay someone to help.

If you live in an older building, you’ll be glad to know that you can have GRP installed. GRP is a lightweight material, which can help reduce the structural load on your building. This can be advantageous for older buildings or structures with weight restrictions.


Exploring the Cost of GRP Roofing

When it comes to the cost of GRP roofing, several factors can influence the final price. Essentially, there’s no set price for GRP roofing. The price depends on how big your roof is and how much product you’ll need.

If you use a top-quality GRP roofing solution, it’ll cost more than choosing one at a lower price point. It’s also important to factor in the cost of hiring roofing contractors to complete your project. Let’s take a look at what to consider in greater detail.


Roof Size

The most significant factor in determining the cost of GRP roofing is the size of your roof. The larger the roof area that has to be covered, the more materials and labour will be required; this results in a higher cost. Roof size is typically measured in square metres or square feet, so make sure to get an accurate measurement before getting quotes.


Roof Complexity

The complexity of your roof’s design can also affect the cost. A simple, flat roof will generally be less expensive to install than a roof with multiple angles, slopes, or intricate features. The more complex your roof is, the longer the application will take. This results in a higher cost.


Roof Condition

If you’re having GRP installed across an existing flat roof structure, the cost could go up if your GRP roof needs to be repaired beforehand. You’ll need to budget additional costs prior to installation to ensure your contractors are able to work on a roof in a safe condition.


Contractor Experience

The expertise and reputation of the contractor you choose can also affect the cost. Highly experienced and reputable contractors may charge more for their services. Although you don’t have to choose someone with more experience, it’s beneficial to do so. Highly trained contractors often provide better workmanship and know which GRP materials to use.



Prices may vary from one region to another. It’s vital that you do your research and don’t settle on the first quote that you’re given. To get an accurate cost estimate for your GRP roofing project, it’s best to obtain quotes from multiple reputable contractors. You’ll be able to compare these quotes and consider the factors mentioned above to make a decision.

You can expect the cost of GRP roofing in the UK to range from £70 per square meter. However, this is just a rough estimate, and the actual cost can vary significantly.


Finding the Right GRP Roofing Solution

We understand how difficult it can be to find a reliable GRP system to have installed on your roof. Here at Restec, we offer a wide range of high-quality liquid roofing solutions across the merchant market. Our products are created with excellence and longevity in mind.

GRPROOF 1010 is a high-performance fibreglass system ideal for waterproofing flat roofs and balcony areas. Within our product range, we also have our widely used GRP Roofing Kit. The GRP kit comes with everything you need for 10m2 of flat roofing and comes equipped with a handy application manual for first-time DIYers. Installing a GRP roofing system doesn’t have to be a tedious task.

If you’d like to find out more about our products or need any additional information, feel free to contact a member of our team here. We look forward to hearing from you in the near future.

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