Residential services
Straight answers about damp and water
A CSRT-qualified surveyor establishes what is actually wrong before anyone quotes for work. Renlon provides residential surveys and specialist remedial work across London and surrounding areas.
- 45+ years’ specialist experience
- CSRT & CSSW qualified
- 25,000+ installations
Not sure which service you need? Describe the signs and Renlon can advise on the appropriate next step.
Start with what you need help with
- Water in a basement or cellar
- A survey or second opinion
- Damp marks or damaged plaster
- Rot or wood-boring insects
You do not need to diagnose it yourself. Tell Renlon what you can see, where it is and when it appears.
Find the right next stepResidential enquiry
Tell us what you’ve noticed.
You do not need to know the cause or choose a treatment. Explain the symptoms, the property location and any relevant timings; Renlon can then assess the enquiry and advise on the appropriate next step.
- Choose the closest residential service, or select “not sure”
- Photographs and existing quotations are optional
- Any chargeable survey fee is confirmed before attendance
Residential services at a glance
Diagnosis before treatment, with the right specialist route.
- Provider
- Renlon Limited
- For
- Homeowners and property managers
- Services
- Structural waterproofing across Types A, B and C, cavity drainage, surveys, damp proofing and timber treatment
- Approach
- Qualified diagnosis, written specification, specialist installation and handover
- Service area
- London and surrounding areas
- Guarantee
- 10-year Renlon guarantee on qualifying installations, subject to agreed terms
Services
Residential capabilities.
Renlon starts with an accurate diagnosis, then recommends the appropriate service — and sometimes no remedial work at all.
Commercial & residential
Basement Structural Waterproofing
Complete below-ground waterproofing for new-build and existing structures, covering Type A, Type B, Type C and combined systems.
Ask about basement waterCommercial & residential
Includes RenStrength
Type A Waterproofing & Tanking
Type A barrier protection applied directly to the structure. Renlon specifies cementitious tanking renders, waterproof slurries and other suitable systems according to the property and substrate.
RenStrength is Renlon’s proprietary Type A waterproofing and strengthening option. Where suitable, it removes the need for hacking-off, reducing noise, waste and disruption.
Explore RenStrength Ask about Type A waterproofingCommercial & residential
Type C Cavity Drain Membrane
Drained protection that manages water within a controlled cavity and discharges it safely.
Ask about cavity drainageCommercial & residential
Survey & Inspection
A qualified diagnosis before anyone proposes a solution.
Ask for a survey or second opinionResidential
Damp Proofing
Accurate diagnosis first, then the right remedy — and sometimes no remedy at all.
Ask about damp signsResidential
Rising Damp
Chemical damp proof course installation where rising damp is genuinely present.
Ask about rising dampResidential
Penetrating Damp
Water coming in through the fabric — traced to the defect, then fixed at the defect.
Ask about water getting inResidential
Timber Treatment
Dry rot, wet rot and wood-boring insect eradication — starting with the moisture that caused it.
Ask about rot or woodwormyears of specialist experience, from a company established in 1978.
- CSRT- and CSSW-qualified surveyors, paid to diagnose rather than to sell
- If the property does not need the work, the report says so — in writing
- Second opinions on quotations from other companies before clients commit
- 10-year Renlon guarantee on qualifying installations, subject to agreed terms
Our approach
How we work.
Survey, specification, installation and handover from one specialist contractor.
Survey & assessment
A CSSW- or CSRT-qualified surveyor inspects the property, establishes the cause or ingress mechanism and records the condition.
Specification
A written specification covers relevant standards, materials, methods, detailing and guarantee terms.
Installation
Directly employed specialist operatives install the specified system under qualified supervision — no subcontracted labour.
Inspection & handover
Post-installation inspection, photographic record, O&M documentation and the applicable guarantee.
Selected residential work
York House, Kensington.
Leak-containment waterproofing to a Kensington apartment, isolating water ingress without disrupting neighbouring occupied units.
- Investigation and leak tracing
- Containment and drainage design
- Reinstatement and finishes
Residential feedback
What residential customers said.
Short excerpts from public Google reviews previously displayed by Renlon Home. These reviews relate to services delivered under the Renlon Home name.
“Excellent professional, friendly advice.”
“Rich was very courteous and completed a thorough survey.”
“Very helpful service — insightful and practical.”
“Courteous and prompt in their responses to our enquiries.”
“Amazing quality of service and knowledge.”
“Punctual, friendly, efficient and knowledgeable.”
Want to hear from more customers?See additional feedback on the Renlon Home Google profile.
Read more customer reviews on GoogleHomeowner questions
What to know before works are specified.
Renlon’s residential approach starts with qualified diagnosis. These answers explain what that means before you commit to work.
Do I need a survey before works can be specified?
Yes. Similar symptoms can have different causes and require different remedies. The survey establishes the ingress mechanism or condition before a specification is prepared.
Is the survey chargeable?
Specification-level surveys and written reports are chargeable. The fee is confirmed before attendance and is typically credited against the works if you proceed.
Can Renlon waterproof an existing wet basement?
Yes. Existing cellars, vaults and basements — including failed previous systems — form a substantial part of Renlon’s remedial work.
What is the difference between Type A, Type B and Type C waterproofing?
Type A is barrier protection, Type B makes the structure itself water-resistant, and Type C manages water within a drained cavity. The right approach depends on the structure, water conditions and intended use.
How can I distinguish penetrating damp from rising damp?
Penetrating damp can occur at any height, is often localised and may respond to rainfall. Rising damp appears at the base of a wall, often with a tide mark. A survey is needed to confirm the cause.
Do woodworm holes prove an active infestation?
Not necessarily. Fresh bore dust and clean, light-coloured holes are more suggestive of current activity, so the timber and moisture conditions should be inspected before treatment is proposed.
What guarantee is provided?
Qualifying installations receive Renlon’s own 10-year guarantee, subject to agreed terms and project requirements. A manufacturer guarantee may also apply where an approved system is specified.
Speak to a qualified surveyor.
Survey, specification, installation and guarantee from one specialist contractor.