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Top 5 Flat Roof Materials: Best Options for Your Home

Table of Content:

When choosing the best flat roof materials for your garages or sheds, several options exist. To ensure your flat roof is optimally efficient and waterproof, selecting the best materials for its construction is essential. This blog post will explore some top-performing flat roof materials available today!

Before we begin, it is essential to note that flat roofs must be designed with an initial slope to allow rainfall to run off the roof. This includes the available roof surface and any internal gutters required to accommodate runoff.

Roofing Felt

Roofing felt is a popular choice to cover flat roofs across Britain due to its affordability, efficient installation, and straightforward repair methods. In addition, its weatherproof seal properties ensure your roof will be reliably protected against the elements for years to come - no matter what damage arises.

Advantages of Felt Roofing:

  • Cost-effective: Felt roofing is affordable and one of the cheapest flat roofing materials available, making it an excellent choice for those on a tight budget.
  • Easy to Install: Roofing felt is quick and easy to install- if you're a DIY enthusiast, this is for you!
  • Lightweight: Felt roofing is ideal for sheds, garages, and extensions because it's light in weight.
  • Accessible to Repair: Felt roofs are quick, simple and easy to repair or patch roofing felt if it breaks.

Disadvantages of Felt Roofing:

  • Short Lifespan: Felt roofs have a shorter lifespan of only 10-15 years, although high-performance felt roofing can last longer.
  • Vulnerable to Extreme Weather: Felt roofs can be damaged by extreme weather conditions, causing warping in the sun and brittleness in the winter.
  • Unsightly Repairs: If repairs to felt roofing are required, it can look slightly disoriented compared to the original material.

Types of Roofing Felt:

There are different types of roofing felt, we are proud to stock a variety of them. The most popular felt roofing are:

Torch-On Felt:

The three-layer construction of torch-on-felt roofing creates a robust defence against the elements. The material is melted into place using a blowtorch, forming an unbreakable bond with the existing roof surface. This method ensures the protection and security of your home against adverse weather conditions.

Shed Felt:

The three-layer construction of torch-on-felt roofing creates a robust defence against the elements. The material is melted into place using a blowtorch, forming an unbreakable bond with the existing roof surface. This method ensures the protection and security of your home against adverse weather conditions.

Shed Felt:

Shed felt is a flat roofing material commonly used for small structures such as garden sheds, playhouses, and other similar outbuildings. It is typically made from a heavy-duty felt material reinforced with oxidised bitumen, making it highly durable and weather-resistant. Shed felt comes in rolls that are easy to cut to size and install on the roof of garden sheds It is available in various colours and styles to suit different aesthetic preferences. 

Flat Roof Trims:

Flat roof trims are an essential component of any flat roof installation. This flat roof material serves several vital functions, including protecting the roof membrane from damage caused by exposure to the elements, providing a secure edge for the roof membrane to bond to, and preventing water from seeping under the roof and causing damage to the building's interior. We stock a variety of flat roof trims at JJ Roofing Supplies.

EPDM Roofing

EPDM is a rubber roofing system considered one of the most advanced and modern flat roof materials due to its flexibility, seamless finish and extended lifespan. This flat roofing solution is a cost-effective and superior alternative to traditional roofing methods. It can fit any size or shape property and is virtually maintenance-free, making it an unbeatable choice for attractive flat roofing in the UK.

A Flat EPDM Roof laid building | EPDM Flat Roofing

Advantages of EPDM Roofing:

  • Affordable: EPDM roofing is an ideal option for those on a budget, providing the same quality of protection as other materials but at an excellent value.
  • Used in various spaces: This flat roof material can be used in multiple areas due to its flexible and seamless finish. You can use EPDM Roofing at extensions, offices, workshops, garages and garden sheds.
  • Great lifespan: To your surprise, EPDM Roofs can last up to 50 years, depending on the area's weather conditions.
  • Minimal Upkeep: One of the biggest things homeowners look out for is how much maintenance a product needs. EPDM Roofing requires less maintenance which makes it an excellent choice.

Disadvantages of EPDM Roofing:

  • Appearance: If you're someone who is looking to maintain their home's aesthetics, then this rubber roofing system is not the one for you. As it's made from rubber, it does not please the eye.
  • Susceptible to damage: EPDM rubber is known for its longevity, but it's essential to recognise that all durable materials can suffer from wear and tear. Falling branches can cause damage if the material isn't thick enough - however, this issue can be easily remedied with a thicker membrane.

Types of EPDM Roofing Material:

EPDM Membrane: The rubber roofing membranes are all BBA-approved and suitable for single-ply roofing systems and re-roofing applications. The membrane is resistant to extreme temperatures, UV and ageing and can be installed without heat or flames. The one-piece sheet means no joints and potential leaks, and the membrane is highly resistant to punctures, tears, splits and cracks.

Outlets: ClassicBond EPDM Pressure Sensitive Pipe Seals are cured, pre-moulded EPDM flashings designed to be used with ClassicBond EPDM membranes. This ensures easy installation and strong membrane bonding for a superior EPDM rubber roofing system seal.

Adhesives and Primer: Adhesives enable you to bond roofing membranes to any building material. This high-strength adhesive is solvent-based and is perfect for use on vertical roofs, steep slopes and at angles. On the other hand, flat roof primers are specifically formulated for the one-stage cleaning and priming of surfaces to prepare them for application.

EPDM Tapes: EPDM Tapes are used for securing EPDM membranes to the substrate of an EPDM rubber roofing system.

EPDM Trims: The ClassicBond EPDM Drip Trim provides the easiest solution for those looking to finish an EPDM flat roof. This flat roof material is extraordinary because it creates its seal on the roof surface. This effectively removes the need to install a timber perimeter upstand as it is far more convenient in terms of time and cost.

GRP Roofing

GRP (Glass Reinforced Plastic) roofing is becoming an increasingly popular option for roofing projects in both residential and commercial properties. GRP roofing is a durable, low-maintenance, and cost-effective flat roof material.

A gloss black flat GRP roof | GRP flat roofing

Advantages of GRP Roofing:

There are several advantages to using GRP roofing for your next roofing project, including:

  • Durability: GRP roofs are highly durable and can last several decades with proper maintenance. It is also resistant to harsh weather conditions and UV radiation.
  • Waterproof: GRP roofing provides an impervious surface, making it ideal for flat roofs.
  • Low Maintenance: GRP roofs require very little maintenance and can be easily cleaned with soap and water.
  • Cost-effective: GRP is affordable, especially compared to other flat roof materials such as slate or tile.
  • Easy installation: GRP roofing can be quickly installed over an existing roof or deck, making it a fast and easy solution for roofing needs.

Disadvantages of GRP Roofing

  • Discolouration: Fibreglass roofing is renowned for its signature bright finish. However, if not cared for properly, it can lose that sleek gleam and discolour over time.
  • Noisy: GRP roofs might not be ideal for those looking to enjoy a peaceful environment during inclement weather. They can produce significant noise levels in rain and hailstorms.
  • Weather restrictions: GRP Roofs are well suited for places with dry and mild conditions.

Types of GRP Roofing:

At JJ Roofing Supplies, we stock several GRP Roofing materials, such as Cover It Advanced GRP Waterproofing, Cure It GRP, Flexitec, GRP Roofing Trims, and Cromar Pro GRP.

Coping Stones

Coping stones are flat stones that are put on the top of free-standing walls, crucial in preventing rainwater from seeping into the wall. At JJ roofing supplies, we provide various types of coping stones to elevate your detached walls. Our best-selling coping stones are crafted by Castle Composites Ltd, a company renowned for producing handmade products like promenade tiles and gravel matting for over a decade.

A Balcony Made with Coping Stones

Here are a few advantages and disadvantages of coping stones as a flat roof material.

Advantages of Coping Stones:

  • Protection: Coping stones protect the top of a wall from the elements. They can help prevent water from seeping into the wall and also help prevent frost damage in colder climates.
  • Aesthetics: This type of flat roof material helps in the curb appeal of a building.
  • Durability: Depending on the material, coping stones can be highly durable and long-lasting.

Disadvantages of Coping Stones:

  • Cost: Coping stones are expensive to purchase.
  • Maintenance: While coping stones can be durable, they may still require maintenance over time to keep them in good condition. For example, they may need to be cleaned or resealed periodically to prevent staining or water damage.
  • Weight: Coping stones can be heavy, making them difficult to install and requiring additional support. This can add to the overall cost of the project.

Green Roofs

Green roofs are a popular and innovative flat roof solution in today’s time. These roofs are covered in vegetation, which provides a range of benefits for both the environment and building occupants.

Green roofing offers a unique and specialised solution for flat roof protection that stands the test of time. It provides durable trays and an excellent selection of flowers and plants to absorb rainwater, which helps promote growth and strength.

Red wooden houses with Green moss Roofs | Green Roofs

With some manufacturers focusing on hardier plant lives for year-round durability, green roofs can boast unparalleled longevity with a life expectancy upwards of 40-50 years. When replacement is necessary, however, complexities arise beyond other standard solutions - making this option worthwhile yet demanding in its upkeep expectations.

At JJ Roofing Supplies, we stock all green roofing installation materials you need for your flat roof. One of the most popular green roof alternatives is M-Tray Modules by Wallbarn. We also reserve Pedestals & Support Pads for flat roofs.

Conclusion:

In conclusion, resolving a flat roof problem can be accomplished by choosing any of the best flat roofing materials discussed above. GRP Roofing and EPDM are two famous examples that offer longevity to protect your structure from water damage for years to come.

Integrating other unique touches, such as Roofing Felt and Greenroofs, improves insulation and aesthetic benefits. Additionally, coping stones serve a boundary purpose and make them easier to handle. Whether you choose a single material or combine them attentively, all these components provide maximum protection against harsh weather elements.

Regardless of the job size or complexity, JJ Roofing Supplies has a comprehensive selection of flat roof materials suitable for architects, contractors, and homeowners alike. So please don’t wait any longer; shop our dependable products online now!

Published at: 20-04-2023
Mikey Hill
Mikey Hill

Mikey Hill is the E-commerce department manager at JJ Roofing. With over a decade of experience in the roofing industry, he has extensive knowledge in flat and pitched roofing, roof windows, and fascia and guttering.

Mikey also has an excellent understanding of raw material attributes, ensuring the application of best practices across all roofing structures. As a result of his deep understanding of the roofing industry and dedication to excellence, over the last several years, Mikey has become a pivotal figure at JJ Roofing and is part of the reason why we continue to exceed our customer’s expectations.

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