Choosing the right commercial roofing system is a major investment for any business or property owner. With multiple materials available—each offering different benefits, drawbacks, and price points—it’s vital to select a solution that balances performance with value. Whether you’re replacing a roof or planning a new build, understanding the long-term costs and durability of various commercial roofing systems can help you make a smart, cost-effective decision.

In this article, we break down the most commonly used commercial roofing systems in the UK, examining how they stack up in terms of cost and longevity.

1. Built-Up Roofing (BUR) – Traditional and Reliable

Overview:
Built-Up Roofing, often called “tar and gravel roofing,” is one of the oldest systems still in use. It consists of multiple layers of bitumen (asphalt or coal tar) alternated with reinforcing fabric, topped with a layer of gravel.

Longevity:
BUR systems typically last 20 to 30 years, depending on installation quality and maintenance.

Cost Consideration:
This system is relatively affordable to install, especially for larger flat roofs. However, labour costs can be high due to the layered application process.

Value Verdict:
BUR is durable and time-tested, but heavier and messier to install than modern systems. Ideal for roofs with minimal foot traffic and when upfront cost is a concern.

2. EPDM Rubber Roofing – Lightweight and Cost-Effective

Overview:
EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane widely used for flat commercial roofs. It’s known for being lightweight, flexible, and quick to install.

Longevity:
EPDM roofs can last 25 to 30 years or longer with proper care.

Cost Consideration:
One of the most affordable commercial roofing systems on the market, especially when installed in large, simple layouts. Repairs are also inexpensive.

Value Verdict:
Great for cost-conscious businesses seeking durability and easy upkeep. EPDM is also UV-resistant, making it suitable for sun-exposed buildings.

3. TPO Roofing – A Balance of Performance and Efficiency

Overview:
TPO (Thermoplastic Polyolefin) is a single-ply membrane roofing system that reflects sunlight, making it popular for buildings looking to improve energy efficiency.

Longevity:
TPO roofing typically lasts 20 to 25 years, but newer formulations may push toward the 30-year mark.

Cost Consideration:
Slightly more expensive than EPDM but cheaper than PVC. Installation is relatively quick due to heat-welded seams.

Value Verdict:
TPO strikes a balance between performance and cost. Its white reflective surface makes it ideal for eco-conscious or temperature-sensitive environments like retail units and warehouses.

4. PVC Roofing – Durable and Chemical-Resistant

Overview:
PVC (Polyvinyl Chloride) roofing is a single-ply membrane known for strength, fire resistance, and chemical tolerance—making it ideal for commercial kitchens, factories, or buildings with exhaust vents.

Longevity:
Expect a lifespan of 25 to 30 years, or more with high-quality installation and minimal foot traffic.

Cost Consideration:
PVC is more expensive than both EPDM and TPO, but that’s reflected in its robust performance.

Value Verdict:
While the initial cost is higher, PVC’s strength and long-term resilience make it ideal for demanding commercial applications.

5. Torch-On Felt Roofing – Traditional but Still Relevant

Overview:
Torch-on felt is installed using layers of modified bitumen, which are heat-sealed to the roof using a gas torch. It remains a popular choice for small commercial flat roofs in the UK.

Longevity:
Torch-on felt roofs typically last 10 to 20 years, depending on thickness and weather exposure.

Cost Consideration:
Installation is affordable, especially for smaller spaces, but requires experienced contractors due to the fire risk involved with torching.

Value Verdict:
Best for small-scale commercial properties where budget constraints exist. However, it offers less durability than newer materials.

6. Metal Roofing (Steel, Zinc, or Aluminium) – Built to Last

Overview:
Metal roofing—especially standing seam steel—is becoming more popular in commercial settings due to its exceptional strength, low maintenance, and sleek modern look.

Longevity:
Metal roofs can last 40 to 60 years, and often come with extended warranties.

Cost Consideration:
This is one of the most expensive commercial roofing options in terms of upfront installation. However, the cost is offset by minimal maintenance and exceptional lifespan.

Value Verdict:
An excellent long-term investment for commercial buildings seeking durability, minimal upkeep, and an impressive ROI. Ideal for schools, offices, and distribution centres.

Final Thoughts: Choosing the Right Roofing System

There’s no one-size-fits-all solution when it comes to commercial roofing systems. Your choice will depend on factors like:

• Budget (initial and long-term)

• Roof structure and size

• Expected foot traffic

• Local weather conditions

• Energy efficiency goals

• Compliance or fire resistance needs

While metal and PVC offer the best long-term value in terms of durability, options like EPDM and TPO provide excellent performance at lower costs. BUR and torch-on felt may suit traditional buildings or tight budgets but often require more frequent repairs or replacement.

Ultimately, the best roofing system is the one that aligns with your commercial goals, physical requirements, and maintenance expectations.

Need expert advice on which system suits your property best?
Get in touch with our team for a site survey and free consultation. Investing in the right commercial roofing system today can prevent costly issues tomorrow.