commercial roof replacement in London (115)

If your roof is showing signs of age or persistent leaks, it might be time to consider a roof replacement.

Whether you’re dealing with cracked tiles, recurring damp patches, or storm damage, search for checked roof replacement services in London with Checkatrade to restore your home’s protection and appearance.

What is roof replacement?

Roof replacement involves removing your existing roof covering — such as tiles, felt, or slate — and installing new materials to restore full protection against the elements.

In some cases, it may also include replacing damaged battens, underlay, or insulation.

Unlike small roof repairs, a full replacement ensures long-term durability, energy efficiency, and weather resistance.

Homeowners often choose this option when repairs are no longer cost-effective or when planning a major home renovation.

How much does a roof replacement cost?

Typical roof replacement costs: Expect to pay between £5416 and £10644, with an average cost of £7567.

Costs can vary depending on factors such as the roof type (pitched, flat, or hip), materials used, property size, and accessibility.

For more detailed pricing information, take a look at our roof replacement cost guide.

Common roof replacement services

Some of the most common roof replacement projects include:

• Flat roof replacement (felt, GRP, or EPDM systems)
• Garage roof replacement, including asbestos removal and re-roofing
• Slate or tiled roof replacement for pitched homes
• Conservatory roof replacement, often to improve insulation
• Bay window and porch roof replacements

Whatever your needs, hiring a checked and experienced roofer in London ensures the job is done safely and to a high standard.

Roof replacement vs roof repair

While repairs can fix isolated issues like broken tiles or minor leaks, they may only be a short-term solution.

A full roof replacement is often needed when:

• Damage is widespread or recurring
• The roof is over 20–25 years old
• There are visible gaps or daylight in your loft
• Multiple layers of repairs have already been applied

In the long run, a replacement often proves more cost-effective and energy efficient.

Timings: How long does roof replacement take?

Most roof replacements take between 3 and 7 days, depending on roof size, materials, and weather conditions.

• Flat roofs may take just 1–2 days
• Pitched or slate roofs typically require 5–7 days
• Large or complex roofs with dormers or chimneys may take longer

Checked roofers plan around weather forecasts and use tarpaulins to protect your home in case of unexpected rain.

How long does a new roof last?

The lifespan of your new roof depends on the material used and the quality of installation. On average:

• Felt roofs last around 15–20 years
• Concrete or clay tiles can last 40–60 years
• Slate roofs may last over 100 years
• Metal roofs can last up to 70 years

Regular maintenance — such as clearing moss and checking flashing — can help extend the life of your new roof.

What should be included in your quote?

When comparing quotes from roofers in London, ensure the following details are covered:

• Removal and disposal of old roofing materials
• Supply and installation of new tiles, slates, or membrane
• Scaffolding and safety measures
• Insulation and underlay replacement
• Guttering, fascia, or soffit renewal (if required)
• Labour, materials, and waste removal costs
• Timescales and warranty information

A transparent, detailed quote helps you compare services fairly and ensures you know exactly what you’re paying for.

What to look for when hiring a roofer

Roofing is a safety-critical trade, so it’s important to check that your contractor is properly checked and qualified. Look for:

• Accreditation from NFRC (National Federation of Roofing Contractors) or similar bodies
• Valid and adequate public liability insurance
• Experience with your specific roof type (e.g., flat, pitched, asbestos, or conservatory)
• Positive reviews from previous customers

Hiring a checked roofer with the right training gives you confidence in the quality and safety of the work. Our roofing hiring guide has more.

Tips for hiring a roof replacement company in your area

Before hiring a roofing company near you, follow these steps to ensure you hire right:

• Read reviews on Checkatrade to see feedback from real customers
• Check services offered, e.g., flat roofs, conservatory roofs, or garage re-roofing
• Compare several quotes to ensure you receive a fair and competitive rate

For tradespeople committed to quality and a job done right, search for roof replacement services in London with Checkatrade.