Guide To Common Commercial Roof Coverings: Comparing Materials And Benefits

When it comes to commercial properties, the roof is one of the most important investments you will ever make. Whether you own an office building, manage an industrial unit, or oversee retail space, the type of roof covering you choose can have a lasting impact on durability, maintenance, and overall cost.

In this guide, we will walk you through the common commercial roof coverings used across the UK, breaking down their strengths, suitability, and long-term benefits. If you are considering replacing or upgrading your roof, you are in the right place. At McColloch Roofing, we know that the roof over your business is more than just a protective layer.

Since our establishment in 2015, our family-run team has worked with property owners, estate managers, and commercial developers to deliver roofing solutions built on reliability, quality, and integrity. From pitched roof installations to complex flat roof repairs, our services are trusted across Bromley and beyond for their craftsmanship and long-term value.

If looking for expert advice on your roofing options, call us now on 020 8776 1693 or email info@mccollochroofing.com to book a consultation.

Understanding The Role Of Roof Coverings In Commercial Buildings

Before exploring each material, it is essential to recognise why roof coverings matter so much in commercial roofing projects. Unlike residential properties, business and industrial spaces face different demands. Roof coverings must withstand heavier foot traffic, structural equipment like HVAC units, and exposure to more severe environmental conditions.

Here are some of the key factors that roof coverings provide for commercial buildings:

• Weather Protection: Shields your business from leaks, storms, and unpredictable British weather.
• Structural Support: Strong coverings distribute weight evenly, necessary for buildings with large spans or rooftop units.
• Energy Efficiency: The right materials reduce heating and cooling costs, keeping bills manageable and affordable.
• Safety And Compliance: Fire resistance and insulation standards help meet UK regulations.
• Longevity: Choosing wisely reduces the need for costly repairs and replacements in the long run.

Types Of Common Commercial Roof Coverings And Their Benefits

Below, we provide a detailed overview of the common commercial roof coverings commonly found in the UK market. Each has its advantages and challenges, so the best choice depends on your property type, budget, and long-term plans.

1. Single-Ply Membranes (EPDM, TPO, PVC)

Single-ply systems such as EPDM, TPO, and PVC are among the most popular coverings for low-slope or flat commercial roofs. These flexible sheets are lightweight, quick to install, and offer excellent resistance to weathering.

• EPDM (Ethylene Propylene Diene Monomer): Known for its durability and UV resistance, this rubber-based material performs well in a variety of climates.
• TPO (Thermoplastic Polyolefin): Offers high heat resistance, making it an ideal choice for enhancing energy efficiency.
• PVC (Polyvinyl Chloride): Renowned for its chemical resistance, it is often used in industrial environments.

2. Built-Up Roofing (BUR)

Often referred to as “tar and gravel” roofs, built-up roofing has been a trusted option for over a century. It consists of multiple layers of bitumen alternated with reinforcing fabric, topped with a protective layer of gravel.

• Great for durability and waterproofing.
• Provides natural insulation against heat.
• Requires more time to install, but lasts decades with proper care.

3. Modified Bitumen Roofing

Modified bitumen is similar to BUR but incorporates polymer modifiers to enhance its strength and flexibility. Applied in rolls, it is heat-welded or cold-applied for secure adhesion.

• Excellent for withstanding heavy foot traffic.
• Resistant to tears and punctures.
• Lower maintenance compared to older bitumen systems.

4. Metal Roofing Systems

Commercial metal roofing continues to gain popularity, particularly in industrial and large retail settings. Steel, aluminium, and zinc are commonly used.

• Extremely durable with lifespans of 40–60 years.
• Fire-resistant and recyclable, making it a sustainable choice.
• It can be installed with standing seams to prevent leaks.

5. Liquid-Applied Roofing Systems

For businesses looking to extend the life of an existing roof without complete replacement, liquid-applied membranes are a practical choice.

• Applied directly to the roof surface, it creates a seamless waterproof barrier.
• Cost-effective solution for repairs and overlays.
• Flexible and adaptable to complex roof shapes.

6. Green Roofs

Although less common, green roofs are gaining popularity in urban environments. These living roofs are layered with vegetation and soil, supported by waterproof membranes that prevent water from seeping through.

• Improve insulation and reduce energy bills.
• Provide natural water management.
• Enhance the building’s sustainability credentials.

7. Slate And Tile Roofing

While typically associated with traditional pitched roofs, slate and clay tiles remain an option for certain commercial buildings.

• Extremely long-lasting and aesthetically appealing.
• Require minimal maintenance once installed.
• Heavier than other coverings, making it unsuitable for every structure.

Comparing Materials: Which Roof Covering Is Best For Your Property?

Selecting the right roof covering depends on more than just price. You need to consider your property’s design, long-term maintenance requirements, energy efficiency, and environmental factors.

Here are some valuable points to guide your decision:

• Building Purpose: Industrial sites often require metal or modified bitumen for strength, while office blocks may benefit from single-ply membranes.
• Roof Design: Flat roofs work well with liquid-applied systems or BUR, whereas pitched structures may suit slate or tile coverings.
• Budget: EPDM and liquid coatings offer cost-effective solutions, while metal and slate require higher upfront investments but provide long-term savings.
• Maintenance Needs: Liquid-applied and single-ply systems are easier to repair, while BUR and tiles require more specialist maintenance.
• Sustainability Goals: Green roofs are an ideal choice for those seeking to enhance energy efficiency and minimise environmental impact.
• Lifespan Considerations: If longevity is a key factor, metal and slate stand out for their exceptional durability, often lasting several decades.

Also Read: What Factors Determine The Cost Of Commercial Roofing Services In My Area?

Choose The Right Commercial Roof With McColloch Roofing

A commercial roof is a major investment, one that directly impacts your property’s protection, efficiency, and long-term costs. By understanding the different types of common commercial roof coverings, you can choose a solution that not only safeguards your building but also delivers ongoing value.

At McColloch Roofing, we bring more than 100 years of combined experience to every project. As members of the Confederation of Roofing Contractors and registered with Bromley Trading Standards, we pride ourselves on delivering dependable, high-quality roofing services to businesses across South East London.

If you are ready to explore your roofing options or need advice on the best material for your property, contact McColloch Roofing today. Call us on 020 8776 1693 or email info@mccollochroofing.com to arrange your free consultation.

FAQs

1. What is the most cost-effective commercial roof covering?

Single-ply membranes, especially EPDM, are often the most cost-effective due to their low installation costs and long service life. For tailored advice, call us on 020 8776 1693.

2. How long does a commercial metal roof last?

Metal roofing can last between 40 and 60 years with minimal maintenance, making it one of the most durable options for commercial properties.

3. Are green roofs suitable for all commercial buildings?

Not all structures can support the additional weight of a green roof, but with proper structural assessment, they can be an excellent eco-friendly choice.

4. Can liquid-applied systems repair an old roof?

Yes, liquid-applied membranes are designed to overlay existing roofs, sealing leaks and extending the roof’s lifespan without a full replacement. To determine if your roof qualifies, please contact our experts today.

5. How do I choose the best roof covering for my property?

The right choice depends on factors such as building design, budget, usage, and environmental goals. A professional assessment ensures you select the most suitable option. Request a free quote for a professional site survey.