If you own an older property in the UK, there’s a good chance your garage roof may still contain asbestos. While asbestos was once valued for its durability and fire resistance, it’s now recognised as a serious health hazard.
At Excel Asbestos, we specialise in guiding homeowners through the process of asbestos garage roof replacement, from safe removal to selecting the best modern materials to add value to a property. Today, we’ll explore the top roofing materials for replacing an asbestos garage roof so you can understand the differences and make an informed choice.
Steel Roofing Sheets
Steel roofing sheets are by far the most popular choice for replacing asbestos garage roofs, offering a unique combination of durability, versatility, and cost-effectiveness.
They are suitable for a wide variety of applications, making them ideal for both traditional and modern garage designs.
Why Choose Steel Roofing Sheets?
Steel roofing sheets stand out due to their unmatched performance in harsh weather conditions, low maintenance needs, and long lifespan.
They are often considered the gold standard for garage roof replacements, particularly for sloped designs.
Advantages of Steel Roofing Sheets
Exceptional Durability
☔ Steel roofing sheets are highly resistant to corrosion, dents, and extreme weather, including heavy rain, snow, and wind.
🧯 Steel is non-combustible, offering superior fire protection compared to other materials, making it an excellent safety upgrade from asbestos.
🕰️ With proper care, they can last for 40 years or more. At Excel Asbestos, we back our steel roofs with a 20-year guarantee for added peace of mind.
Versatile Design Options
🏠 Available in multiple profiles such as corrugated, ribbed, and flat, steel sheets can be tailored to complement various architectural styles.
🎨 Finish options like galvanised, powder-coated, or painted allow you to choose the perfect colour and texture for your garage.
🏗️ Suitable for retrofitting older garages or enhancing the look of newer builds.
Eco-Friendly, Recyclable and Low-Maintenance
♻️ Steel is 100% recyclable, making it a sustainable option for environmentally-conscious homeowners.
🌱 By replacing asbestos with steel, you’re not only upgrading safety but also contributing to a greener future.
🛡️ Corrosion-resistant coatings (e.g., zinc or aluminium galvanisation) significantly reduce rust and wear.
🔧 Maintenance typically involves occasional cleaning and inspections for scratches or dents that might expose the metal.
Key Features of Steel Roofing Sheets
| Feature | Details |
|---|---|
| Cost | £25 – £50 per m² |
| Lifespan | 40+ years with proper maintenance |
| Fire Resistance | High – Non-combustible |
| Installation Type | Professional installation recommended due to weight and fastening needs. |
| Recyclability | Fully recyclable, reducing environmental impact. |
| Climate Performance | Excellent in harsh weather, including snow and heavy rainfall. |
Considerations for Steel Roofing Sheets
Thermal Conductivity
🔥❄️Steel can conduct heat and cold, potentially affecting the temperature inside the garage.
🧱Installing thermal insulation layers or pairing steel sheets with insulated panels can mitigate this issue.
Weight and Installation
🏋️Steel sheets are heavier than materials like bitumen or fibreglass, requiring a solid garage structure.
🔧Professional installation is recommended to ensure secure fastening and optimal performance.
Periodic Maintenance
🔩While steel roofing is low-maintenance, it’s not completely maintenance-free, given its long potential lifespan.
🔍Periodic inspections are advised to check for scratches, dents, or damaged coatings that might lead to rust. Applying touch-up paint or sealant can extend the lifespan significantly.
Who Are Steel Roofing Sheets Best For?
Steel roofing sheets are an ideal choice for homeowners looking for:
- A long-lasting solution that performs well in all weather conditions.
- A versatile and modern appearance that can be customised to fit their garage design.
- A low-maintenance material that provides excellent value over time.
- A safe and eco-friendly option to replace outdated asbestos roofing.
Why Steel is the Top Choice
Steel roofing sheets dominate the roofing market for good reasons. Their strength, durability, and versatility make them a practical and reliable solution for replacing asbestos garage roofs. With a wide range of styles, finishes, and customisation options, steel offers a blend of functionality and aesthetics that few materials can match. When installed by professionals, they deliver long-term performance with minimal upkeep, making them an effortless investment for many homeowners.
EPDM Rubber Roofs
EPDM (Ethylene Propylene Diene Monomer) rubber is a high-performance option particularly suited for flat or slightly sloped garage roofs.
Advantages
- Longevity: EPDM rubber roofs boast a lifespan of up to 50 years, making them one of the longest-lasting roofing materials.
- Weather Resistance: Highly resistant to UV rays, extreme temperatures, and heavy rainfall, EPDM is designed for durability in diverse climates.
- Low Maintenance: Once installed, EPDM requires minimal upkeep, saving time and effort over its lifespan.
- Seamless Installation: Available in large sheets, EPDM can cover the entire roof surface with minimal seams, reducing the risk of leaks.
Considerations
- Aesthetic Limitations: EPDM typically comes in black or grey, which may not suit all design preferences.
- Initial Cost: While durable, EPDM can have a higher upfront cost compared to other flat roofing options.
- Professional Installation Recommended: Though relatively easy to install, ensuring proper adhesion and alignment is critical for long-term performance.
GRP Fibreglass Roofs
GRP (Glass Reinforced Plastic) fibreglass is a premium option, particularly for flat garage roofs, offering a sleek and seamless finish.
Advantages
- Seamless Waterproofing: GRP provides a completely watertight surface, effectively eliminating leaks.
- Lightweight Yet Strong: Despite being lightweight, fibreglass is highly durable and can withstand heavy foot traffic and adverse weather.
- Aesthetic Versatility: GRP is available in a range of colours and finishes, making it ideal for enhancing the visual appeal of your garage.
- Resistant to Rot and Corrosion: Unlike traditional materials, GRP does not degrade over time due to moisture or rust.
Considerations
- Installation Costs: GRP roofing can be more expensive than other materials, reflecting its premium durability and aesthetic qualities.
- Surface Preparation: Proper installation requires a clean, smooth surface, potentially adding preparation costs.
- UV Protection Required: Without UV-resistant coatings, prolonged exposure to sunlight can cause discoloration or slight deterioration.
Onduline/Bitumen Roof Sheets
Onduline or bitumen roof sheets are a practical and affordable option, especially for replacing old corrugated asbestos roofing.
Advantages
- Cost-Effective: One of the most budget-friendly choices, bitumen sheets offer a great balance of affordability and reliability.
- Weather Resistance: Bitumen is naturally waterproof and performs well in heavy rain or damp conditions.
- Ease of Installation: Lightweight and easy to handle, these sheets are a favourite for DIY enthusiasts and quick installations.
- Quiet Under Rain: Bitumen absorbs sound better than metal, making it quieter during rainfall.
Considerations
- Limited Lifespan: Compared to steel or fibreglass, bitumen sheets may require more frequent replacement.
- Aesthetic Appeal: While functional, they may lack the refined appearance of premium materials.
- Susceptibility to Heat: Bitumen can soften under high temperatures, which may affect performance in very hot climates.
Concrete Fibre Roof Sheets
Concrete fibre sheets are a modern, safer alternative to asbestos roofing, offering exceptional strength and fire resistance.
Advantages
- Asbestos-Free Safety: Mimicking the appearance and durability of asbestos sheets, concrete fibre is a safe, health-conscious alternative.
- Fire Resistance: Concrete fibre is non-combustible, providing excellent protection against fire risks.
- Long Lifespan: With minimal maintenance, these sheets can last several decades, making them a cost-effective solution over time.
- Thermal and Acoustic Benefits: Concrete fibre offers better insulation than metal, improving thermal regulation and reducing noise.
Considerations
- Weight: Heavier than most other materials, concrete fibre sheets require a strong underlying structure and professional installation.
- Limited Flexibility: Due to their rigidity, these sheets are best suited for pitched roofs where structural stability is assured.
- Appearance: While practical, concrete fibre sheets may lack the visual appeal of more modern materials like GRP or steel.
Comparison of Materials for Asbestos Garage Roof Replacement
| Material | Type | Avg. Cost (Per m²) | Lifespan | Features | Fire Resistance | Maintenance | Weight | Roof Type |
| Steel Roofing Sheets | Metal | £25-£50 | 40+ years | Durable and fire-resistant; may require insulation due to thermal conductivity. | High | Medium | Heavy | Sloped |
| EPDM Rubber Roofs | Rubber | £45-£70 | 50 years | Ideal for flat roofs; offers excellent weather resistance and low maintenance. | Medium | Low | Light | Flat |
| GRP Fibreglass Roofs | Fibreglass | £70-£100 | 25-30 years | Provides a seamless, watertight finish; higher upfront cost but low maintenance. | Medium | Low | Light | Flat |
| Onduline Bitumen | Bitumen | £10-£20 | 10-15 years | Cost-effective and easy to install; slightly shorter lifespan. | Medium | Medium | Light | Pitched |
| Concrete Fibre Sheets | Concrete | £30-£60 | 30+ years | Fire-resistant and strong; heavier material requiring a strong structure. | High | Medium | Heavy | Pitched |
*Please note, these costs are estimates and can vary based roof size, complexity, and structural differences.
Each roofing material brings distinct advantages, allowing you to choose the best fit for your budget, aesthetic preferences, and functional requirements. Steel roofing sheets stand out for their exceptional durability, versatility, and cost-effectiveness, making them ideal for a wide range of designs.
FAQs: Asbestos Roof Replacement Materials
What is the average cost of replacing an asbestos garage roof?
The cost for a licensed professional to replace an asbestos garage roof ranges from £2,000 to £4,500, depending on factors such as roof size, material choice, and removal fees for asbestos.
How much does asbestos garage roof removal cost?
The cost of removing an asbestos garage roof can start as low as £750 for a standard single garage. Larger garages or complex removals may cost more.
Is it safe to remove an asbestos garage roof myself?
No, asbestos removal should always be handled by licensed professionals to ensure compliance with health and safety regulations and prevent hazardous exposure.
What is the best material for replacing an asbestos garage roof?
The most popular choice is steel roofing. However, no two garages are the same—EPDM rubber, GRP fibreglass, concrete fibre sheets, and bitumen/onduline sheets each offer unique benefits depending on budget, structure, and design needs.
Can I install a new garage roof over an asbestos roof?
No, it’s not recommended. Asbestos-containing materials should be safely removed before installing a new roof to comply with UK laws and ensure long-term safety.
How long does it take to replace an asbestos garage roof?
The process generally takes just 1 day, including safe asbestos removal and the installation of the new roofing material. However, complex or large jobs might take longer.
Are there any grants or financial support for asbestos removal in the UK?
In some cases, local councils may offer grants or financial assistance for asbestos removal. Check with your local authority to see if you qualify.
What are the risks of leaving a damaged asbestos garage roof in place?
A damaged asbestos roof can release harmful fibres into the air, posing serious health risks such as asbestosis, lung cancer, or mesothelioma.
How can I find a reliable contractor for asbestos garage roof replacement?
Look for licensed asbestos removal specialists (like Excel Asbestos!) with good customer reviews, experience in garage roof replacements, and appropriate certifications for asbestos handling.
Reach Out to Excel Asbestos
Give us a ring or drop us an email – Excel’s expert team is ready to help you choose the perfect garage roof replacement!
