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A small roofing fault can quickly become a much larger problem once water starts getting into the property. At RJC Roofing & Building, we carry out professional roof repairs across London, helping homeowners, landlords and property managers deal with leaks, storm damage, worn materials and general roof deterioration before the damage spreads.

We undertake both planned and emergency roofing repairs for pitched roofs, flat roofs, extensions, garages, porches and commercial buildings. Our work includes tile and slate replacement, flashing repairs, chimney repairs, ridge work, flat roof patching, gutter repairs and localised waterproofing.
Before starting, we assess the condition of the affected area and look for any related damage. A slipped tile may be simple to replace, but if the surrounding battens or underlay have deteriorated, that also needs to be considered.
Where a local repair is likely to provide a reliable solution, we’ll explain what’s involved. If the roof has widespread damage or repeated faults, we’ll be honest about whether further repairs remain economical.
Our services are suitable for homeowners, landlords, letting agents, property managers and businesses. We can help with sudden leaks, problems identified during a survey and general repairs needed to keep an older roof in serviceable condition.

What Include

Tiles and slates can move during strong winds, crack through age or become damaged during previous work. Even one missing section may expose the roof beneath and allow rainwater to enter.

A damp ceiling doesn’t always sit directly below the defect. Water can travel along roofing felt, rafters or masonry before appearing inside. We inspect the surrounding roof area carefully to identify the likely source.

Leadwork around chimneys, walls, dormers and roof junctions can split, lift or pull away over time. Failed flashing is a common cause of water ingress, particularly on older properties.

Loose ridge tiles and cracked mortar can leave the highest points of the roof vulnerable. We repair or replace damaged sections and check nearby tiles for movement.

Splits, lifted seams, damaged edges and blocked outlets can all cause flat roofs to leak. We inspect the full surface, including drainage points and upstands, before recommending a repair.

Some roofing repairs involve more than the covering itself. Damaged chimney pointing, loose pots, leaking gutters or rotten fascia boards can all affect the roof and surrounding walls.
Our Process
We believe every successful roofing and building project starts with clear communication and careful planning. From your initial enquiry to the final inspection, our straightforward process ensures quality workmanship, complete transparency, and a hassle-free experience every step of the way.

We’ll ask what you’ve noticed, when the problem began and whether the fault appears worse during particular weather conditions.

We inspect the affected area and the surrounding roof to identify visible defects, likely entry points and any related deterioration.

Once we understand the problem, we’ll explain the most suitable repair and provide a clear quotation.

The damaged materials are removed or secured, and repairs are completed using suitable products and established roofing methods.
We inspect the repaired area, check nearby details and clear away waste before leaving the property.
Expertise
We identify the true source of roof leaks and carry out reliable repairs that protect your London property from further water damage.
Roof leaks should be investigated promptly, even when the amount of water seems small. Moisture can damage plaster, insulation, roof timbers and electrical fittings before the full extent of the problem becomes visible.
London properties often have complicated roof layouts. Victorian terraces in Camden, Islington and Hackney may have shared chimney stacks, valleys and ageing slate. Homes in Barnet, Ealing or Croydon may include rear extensions, dormers and flat roof sections added at different times.
These details affect how water travels and where repairs need to be carried out. We don’t simply seal the first visible gap. We assess the roof covering, junctions, flashing and drainage so the repair addresses the likely cause.
A good roof repair starts with an accurate assessment. Covering a fault without dealing with the cause may stop a leak briefly, but it often leads to the same problem returning.
We take a practical approach and explain our findings in straightforward language. You’ll know what has failed, what work we recommend and whether any surrounding areas need attention.
Our customers value reliable appointments, clear communication and excellent workmanship. We work carefully around existing tiles, chimneys, gutters and neighbouring roofs, particularly on terraced and converted properties where access may be restricted.
We also keep the working area organised and aim to complete repairs with minimal disruption to the people living or working below.
Areas
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Faq
Have questions about our roofing or building services? We've answered some of the most common queries to help you better understand our services, our process, and what you can expect when working with RJC Roofing & Building. If you can't find the information you're looking for, our friendly team is always happy to help.
Yes. Many roofing problems can be resolved with localised repairs if the main roof structure and surrounding materials remain in reasonable condition.
We inspect the roof covering, flashing, valleys, chimneys, junctions and internal signs of water ingress. The visible damp patch may not be directly below the fault.
Yes. We can help with urgent issues such as active leaks, missing tiles and storm damage. Availability will depend on the location, weather and safe access.
Yes. We repair natural and artificial slate roofs, including replacing slipped or damaged slates and checking the surrounding fixings.
Smaller repairs may be completed in a few hours, while more involved work can take longer. Access, weather and the extent of the damage will affect the timescale.
Yes. If the damage is widespread and repeated repairs are unlikely to be cost-effective, we’ll explain why replacement may be the better option.
Yes. We carry out roofing repairs for homes, rental properties, shops, offices and other commercial buildings across London.
If you’ve noticed a leak, missing tiles or damage to any part of your roof, contact RJC Roofing & Building. We provide professional roof repairs in London, with clear advice, careful workmanship and practical solutions based on the actual condition of your property.

RJC Roofing & Building provides professional roofing and general building services across London. We work with homeowners, landlords and property managers who want clear advice, dependable workmanship and a job completed properly.
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