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Emergency Flat Roof Repair Southwest London - Same-Day Service

Flat roof company near me. All work guaranteed. Battersea Power Station The Engine Room London

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Looking for professional flat roof repair in Southwest London? Knights Roofing are expert flat roofers and flat roof specialists serving Battersea, Clapham, Chelsea, Wimbledon and surrounding areas. Whether you need emergency flat roofing repairs, complete installations, or expert maintenance, our experienced team delivers high-quality workmanship backed by 20+ years of expertise.

Professional Flat Roof Repair Services Southwest London

As Southwest London's trusted flat roofing specialists, our flat roofers handle all aspects of flat roof repair and installation:

  • Emergency Flat Roof Repairs - Same day service for urgent leaks and storm damage
  • Preventative Maintenance - Regular inspections to extend roof lifespan
  • Complete Installations - EPDM, GRP, TPO and felt systems from £1,200
  • Insurance Work - Full documentation and support for insurance claims
  • Free Surveys & Quotes - No obligation inspections across Southwest London

Our flat roof repair service covers Battersea, Clapham, Chelsea, Putney, Richmond, Wimbledon, Wandsworth and all surrounding areas. Call 020 7126 8439 to book your free survey today.

Why Flat Roofers & Flat Roof Replacement Is a Smart Choice for Modern Homes and Commercial Buildings

Flat roofing has become increasingly popular for both modern residential properties and commercial buildings—and for good reason. This roofing style offers a clean, contemporary appearance while delivering impressive durability and low-maintenance performance.

Unlike traditional pitched roofs, flat roofs optimize space efficiency. They provide additional usable area that can be transformed into rooftop terraces, support solar panel installations, or even accommodate environmentally friendly green roofs.

With advancements in roofing technology, materials such as EPDM (ethylene propylene diene monomer), TPO (thermoplastic polyolefin), and GRP (glass-reinforced plastic) now offer superior resistance to harsh weather conditions, improved energy efficiency, and extended lifespan.

Whether you're planning a new flat roof installation or need to repair an existing one, working with experienced, certified roofing specialists is essential. The right professionals will not only ensure structural integrity and compliance with local building regulations but also maximize the long-term value of your investment.

Learn more about flat roof leak causes and DIY solutions in our comprehensive flat roof repair guide.

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Modern flat roof with solar panels and clean lines on a commercial building—highlighting energy efficiency and expert flat roof repair solutions.
Flat roof replacement in progress with modern waterproofing membrane being installed for long-term durability and weather protection.

Flat Roof Replacement or Flat Roof Repair?

Not sure if you need flat roof replacement or flat roof repair? Our expert flat roofers provide free surveys to help you decide. We handle both complete replacements from £1,200 and cost-effective flat roofing repairs for Southwest London properties.

Choose flat roof repair if:

  • Your roof is less than 15 years old
  • Damage is localized (small leaks, minor cracks)
  • The roof structure is sound
  • Budget is a concern - repairs cost 60-70% less

Choose flat roof replacement if:

  • Your roof is over 20 years old
  • Multiple leaks or widespread damage
  • Frequent ongoing repairs
  • You want upgraded materials (EPDM, GRP)

Our flat roof specialists assess your roof condition honestly and recommend the most cost-effective solution. See our replacement cost guide for detailed pricing or book your free survey.

Over time, flat roofs can develop issues such as leaks, cracks, and water pooling, which can compromise your building’s structure and energy efficiency. Whether your roof needs minor flat roof repair or a complete flat roof replacement, choosing professional roofing specialists ensures durability, weather resistance, and long-term performance.

We specialise in several flat roofing systems, including EPDM rubber roofing (our most popular choice), GRP fibreglass, and traditional felt. Our certified EPDM roofers provide professional installation with full manufacturer warranties.

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Flat Roof Repair Costs Southwest London 2026

Understanding flat roof repair costs helps you budget appropriately. At Knights Roofing, we provide transparent pricing with no hidden fees. Our flat roofers offer free inspections to identify exact issues before quoting.

Typical Flat Roof Repair Costs

Repair TypeCost RangeDurationMinor leak repair (single patch)£150-£3501-2 hoursBlister repair (2-3 blisters)£200-£4002-3 hoursSeam repair (failing joints)£250-£5002-4 hoursFlashing repair (wall/chimney) £300-£700Half dayPonding water solution£400-£9001 dayLarge section repair (2-4m²)£500-£1,2001-2 daysEmergency callout fee£150-£250Credited if repair proceeds

What affects flat roof repair costs?

  • Extent of damage - Localized issues cost less than widespread deterioration
  • Roof accessibility - Height, scaffolding needs, access restrictions
  • Material type - EPDM repairs differ from felt or GRP repairs
  • Underlying issues - Deck damage increases costs significantly
  • Urgency - Emergency callouts carry premium but prevent further damage

💰 Cost comparison: Minor flat roof repairs (£150-£500) are significantly cheaper than full replacement (£2,500-£8,000 for typical domestic roof). Our free inspection helps determine the most cost-effective solution. Book free survey →

Felt Roof Repair - Bitumen Flat Roof Specialists

As experienced flat roofers and felt roof repair specialists, we handle all bitumen flat roof issues. Traditional felt roofs remain popular in Southwest London due to affordability and proven performance.

Common Felt Roof Repairs

1. Tears and Splits
Cause: Physical damage, aging, thermal movement
Repair method: Patch with matching felt using torch-on method
Cost: £150-£350 per repair
Duration: 1-2 hours

2. Blisters (Air/Water Trapped)
Cause: Poor installation, moisture in substrate
Repair method: Cut blister, dry out, re-seal with heat
Cost: £200-£400 for 2-3 blisters
Duration: 2-3 hours

3. Failing Joints/Seams
Cause: Inadequate overlap, poor bonding, age
Repair method: Torch-on new felt strip over failing seam
Cost: £250-£500
Duration: 2-4 hours

⚠️ Felt Roof Lifespan: Traditional felt roofs last 10-15 years. If yours is 12+ years old with multiple issues, replacement may be more cost-effective than repeated felt roof repairs. Our flat roof specialists provide honest assessments.

Book Your Free Felt Roof Inspection →

Comprehensive Flat Roofing Services Southwest London

Looking for experienced flat roofing contractors or flat roofing companies in Southwest London? Knights Roofing provides full-spectrum flat roofing services including repairs, replacements, installations, and maintenance. As professional flat roofers and flat roof specialists, we work with all flat roofing materials: EPDM rubber, GRP fibreglass, felt systems, and single-ply membranes.

Our flat roofing company serves residential and commercial clients across Battersea, Clapham, Chelsea, Wimbledon, Putney, Richmond and surrounding areas. Whether you need flat roofing for new extensions, garage conversions, or commercial buildings, our certified team delivers exceptional results with comprehensive guarantees.

Why choose our flat roofing services?

  • 20+ years experience as flat roof specialists
  • All work by certified, fully insured flat roofers
  • FSC/PEFC certified materials
  • 15-25 year guarantees on installations
  • Free surveys and transparent pricing
  • Emergency same-day service available

Contact Our Flat Roofing Team →

Our Expert Standards

At Knights Roofing, we pride ourselves on working closely with every client from the very first consultation. Our goal is to not only meet but exceed your expectations—delivering a flat roofing solution that is durable, efficient, and built to last.

We specialize in a range of trusted flat roofing systems, including felt, fibreglass (GRP), and EPDM rubber. These materials are selected for their proven performance in weather resistance, insulation, and low maintenance.

All of our work is fully guaranteed, and we’re committed to providing a prompt, professional, and stress-free experience from start to finish. With our experienced team and customer-first approach, you can trust Knights Roofing to deliver lasting results you can rely on.

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Experienced roofers from Knights Roofing completing a high-quality flat roof replacement using durable, weather-resistant materials.

Common Flat Roof Issues

Ponding water

Standing water on a flat roof can lead to leaks, structural damage, and premature deterioration. Proper drainage is essential to prevent costly repairs.

Blistering

Air or moisture trapped beneath the roofing membrane can cause bubbles or blisters, weakening the roof and increasing the risk of leaks.

Buckling

Shifts in the building structure or aging materials can cause the roofing membrane to wrinkle or buckle, reducing its effectiveness and durability.

Alligatoring

Cracking patterns resembling alligator skin occur due to prolonged sun exposure and aging, signaling that the roof may need replacement

Moss and weeds

Poor drainage and accumulated debris can lead to plant growth, which retains moisture and accelerates roof degradation.

Thermal movement

Temperature fluctuations cause expansion and contraction of roofing materials, leading to cracks, weakened seams, and potential leaks over time.

Our reliable worker with a smile on photo

Why Choose Knights Roofing?

  • Why: Flat roofs have become increasingly popular in the London area during the last 15 years. 
  • Location: Local London Roofing Company based in Battersea
  • Reputation: Excellent Craftmanship Guaranteed – 5* Reviews
  • Expertise: Competent installation ensures your roof is set up right.
  • Quality Guaranteed: Only the highest-grade materials used.
  • Longevity: Each roof is a long-term investment, lasting many years.
  • Peace of Mind: Get a guarantee between 15-25 years, depending on the material.

Our company also has valid certificates FSC and PEFC.

For pitched roof solutions with traditional materials, our tile roof specialists handle both emergency repairs and complete replacements across London. Whether you have cracked tiles, slipped ridge tiles, or need a full re-roofing, we provide expert tile roofing services with up to 25-year guarantees. Learn more about our slate roofing services.

Beyond flat roofing, chimneys present unique waterproofing challenges that require specialist masonry expertise. The chimney crown serves as your chimney's primary defence against water ingress from above. If your property has visible chimney structures, professional chimney crown inspection and repair should be part of your comprehensive roofing maintenance strategy, particularly for older London properties with Victorian or Edwardian chimney stacks.

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Quotation Mark

Professional service repairing our roof, good value, would recommend.

Mr Bennett, Wimbledon

Complete chimney repointing and roof repair at our property to a very high Standard.

Mr and Mrs Howe, Clapham

Repaired our lead flashing and completed maintenance work to our leaking roof, great job.

Daniel, Richmond

Frequently Asked Questions

What is the difference between flat roof repair and replacement?

Flat roof repair addresses localised damage like leaks, tears, or failing seams, typically costing £150-£1,200 and completing within 1-2 days. Repairs are appropriate when damage affects less than 30% of roof surface and the structure remains sound. Flat roof replacement involves complete removal and new installation, costing £2,500-£8,000 for typical domestic roofs and taking 2-3 days. Our flat roofers provide free inspections to determine which option offers best value. Most flat roof repairs extend roof life by 5-10 years when done professionally.

Who are the best flat roofers near me in Southwest London?

When searching for flat roofers near me or flat roof specialists in Southwest London, Knights Roofing stands out with 20+ years experience, FSC/PEFC certifications, and comprehensive guarantees. Our flat roofers serve Battersea, Clapham, Chelsea, Wimbledon, Putney, Richmond and surrounding areas with same-day emergency service. As professional flat roof contractors near me, we're fully insured, certified in all major flat roofing systems (EPDM, GRP, felt), and provide transparent pricing. Check our 5-star reviews and free inspections. Call 020 7126 8439 to speak with experienced flat roofers near me.

What flat roofing companies serve Southwest London?

Knights Roofing are professional flat roofing company and flat roof specialists based in Battersea, serving all Southwest London. As an established flat roofing company, we provide emergency flat roof repair, complete replacements, new installations, and preventative maintenance. Our flat roofers work on residential and commercial properties with all materials: EPDM rubber, GRP fibreglass, felt roofs, and single-ply systems. Unlike larger national flat roofing companies, we're a local family business delivering personalized service with 15-25 year guarantees. Contact our flat roofing team.

How do I know if my flat roof needs repair or replacement?

If your flat roof has frequent leaks, visible cracks, ponding water, or signs of aging like blistering or alligatoring, it may require repair or replacement. A professional inspection can determine the best solution.

What is the lifespan of a flat roof?

The lifespan depends on the material used:

  • EPDM rubber – 25-30 years

  • TPO & PVC – 20-25 years

  • GRP (Fiberglass) – 20-30 years

  • Bitumen/Felt – 10-20 years
    Regular maintenance can extend its durability.

What are the most common issues with flat roofs?

Some of the most common flat roof problems include:

  • Ponding water (standing water that can lead to leaks)

  • Blistering (bubbles caused by trapped moisture)

  • Buckling (roof membrane shifting or wrinkling)

  • Alligatoring (cracking due to aging and sun damage)

  • Moss and weed growth (causing trapped moisture and deterioration)

  • Thermal movement (expansion and contraction leading to cracks)

How much does flat roof replacement cost?

The cost varies based on the size of the roof, material used, and labor. On average, flat roof replacement can range from £50 to £120 per square meter in the UK. Contact us for a free quote!

How long does it take to replace a flat roof?

A typical flat roof replacement takes 1 to 3 days, depending on the size and complexity of the project. Repairs can often be completed in a few hours.

How can I prevent leaks on my flat roof?

  • Ensure proper drainage to prevent ponding water.

  • Schedule regular maintenance and inspections.

  • Use high-quality waterproofing materials.

  • Fix small issues like cracks and blisters early before they worsen.

Can I install a new flat roof over my old one?

In some cases, a new membrane can be installed over the existing roof if the structure is still sound. However, if there are significant issues like water damage, a full replacement is recommended.

Do flat roofs require a lot of maintenance?

Flat roofs need regular inspections (at least twice a year) and occasional cleaning to prevent debris buildup, ponding water, and early wear. Proper maintenance can prevent costly repairs.

Do you offer free roof inspections and quotes?

Yes! Knights Roofing provides free inspections and no-obligation quotes for flat roof repairs and replacements. Contact us today to schedule an appointment!

How much does flat roof repair cost in Southwest London?

Flat roof repair costs typically range from £150-£800, depending on the extent of damage. Minor leak repairs cost £150-£300, while more extensive repairs can cost £400-£800. Our flat roofers provide free inspections and transparent quotes before starting any work. See detailed pricing in our cost guide.

Do you offer emergency flat roof repair services?

Yes! Our flat roofing team provides same-day emergency flat roof repair across Southwest London. As experienced flat roof specialists, we understand that roof leaks can't wait. Call 020 7126 8439 for immediate assistance with urgent leaks, storm damage, or ponding water issues.

What makes Knights Roofing the best flat roof company in Southwest London?

As professional flat roofers with 20+ years of experience, we're trusted flat roof specialists serving all of Southwest London. Our flat roofing services include emergency repairs, complete installations, and preventative maintenance - all backed by comprehensive guarantees, FSC/PEFC certification, and competitive pricing.

What areas do your flat roof repair services cover?

Our flat roof repair and flat roofing services cover all of Southwest London including Battersea (our base), Clapham, Chelsea, Putney, Wimbledon, Richmond, Wandsworth, Fulham, and surrounding areas. Our flat roofers can typically reach your property within an hour for emergency repairs.

Do you offer free flat roof inspections in Southwest London?

Yes, Knights Roofing provides free, no-obligation flat roof inspections across Southwest London including Battersea, Clapham, Chelsea, Wimbledon, Putney, Richmond and surrounding areas. Our inspection includes: comprehensive assessment of roof condition and structure, photo documentation of all issues, written report with honest repair vs replace recommendation, cost comparison for both options, and expected lifespan analysis. We never pressure you into unnecessary work - our reputation is built on honest assessments and quality flat roof repair service. Book your free inspection today.

What types of flat roofs can you repair?

Our flat roof repair specialists work on all flat roofing types including felt roofs (torch-on and traditional), EPDM rubber roofing, GRP fibreglass, single-ply membranes, and asphalt roofs. Each material requires specific flat roof repair techniques - we're fully trained and certified in all major flat roofing systems. Whether your flat roof is on a house extension, garage, commercial building, or balcony, we have the expertise to repair it correctly using appropriate materials and methods.

How quickly can you respond for emergency flat roof repairs?

Knights Roofing provides same-day emergency flat roof repair service across Southwest London with typical response times of 1-2 hours for urgent leaks. Call 020 7126 8439 for immediate assistance. Our emergency flat roof repair team operates 7 days a week and can provide temporary weatherproofing within hours to prevent water damage, with permanent repairs scheduled at your convenience. We serve Battersea, Clapham, Chelsea, Wimbledon, Putney, Richmond and surrounding SW London postcodes.