Flat Roof Comparison: Fibreglass, Torch-On Felt, Sheet Metal, and TPO Single Ply

Meta Description: Compare popular flat roofing systems — fibreglass, torch-on felt, sheet metal, and TPO single ply — to find out which is best for your Dundee property. A&B Roofing helps you choose the right solution.

🏗️ Understanding Flat Roofing Options

When it comes to flat roofs, not all systems are created equal. From durability and cost to maintenance and aesthetics, each option brings different strengths and weaknesses. In this guide, we break down four common types of flat roofs:

• Fibreglass (GRP)
• Torch-On Felt
• Sheet Metal
• TPO Single Ply Membrane

Whether you’re a homeowner looking for long-term value or a business owner wanting low maintenance, this comparison will help you make an informed decision.

🟣 Fibreglass (GRP) Roofs

Pros:

• Seamless finish — no joints means fewer leak points
• Modern, clean look
• Durable in the short term with proper installation

Cons:

• Can crack over time, especially with building movement
• Installation sensitive to weather and temperature
• Slippery surface when wet
• Not ideal for large areas due to expansion issues

🔴 Torch-On Felt Roofs

Pros:

• Cost-effective and widely used
• Quick to install on small areas
• Can be repaired in patches

Cons:

• Shorter lifespan (typically 10–15 years)
• Susceptible to cracking and blistering with age
• Requires open flame during installation, posing fire risk

🔵 Sheet Metal Roofs

Pros:

• Extremely durable with long lifespan
• Good resistance to extreme weather
• Recyclable and low maintenance

Cons:

• Higher upfront cost
• Can be noisy during rain or wind
• Not as visually pleasing on domestic properties

🟢 TPO Single Ply Flat Roofs (Recommended)

Pros:

• Durable, weather-resistant, and flexible — ideal for Dundee’s climate
• Heat-welded seams for added waterproofing
• UV and chemical resistant
• Lightweight and energy-efficient
• Quick, flame-free installation
• Modern appearance with minimal maintenance

Cons:

• Slightly higher cost than felt, but much longer lifespan and fewer repairs

At A&B Roofing, we specialise in TPO single ply flat roofing, offering a modern, long-lasting solution that outperforms older systems. Our expert team installs with precision, ensuring your roof stands the test of time.

A&B Roofing installs high-performance single ply membranes including TPO systems from leading brands such as Sika, S-Flex, and we are also an accredited installer of Alwitra — one of Europe’s most trusted names in flat roofing. When you choose us, you’re choosing quality, compliance, and proven expertise.

📞 Call us on 07597 425035 for expert advice or a free quote
🌐 Visit abroofing.co.uk to explore our full roofing services