Damp proofing
Diagnosis and targeted treatment for rising damp, penetrating damp and recurring moisture problems.
Property Care Specialists Across London020 8970 7471 · [email protected] · WhatsApp 07950 225214
Property Care Specialists Across London
Damp Proofing & Property Care Specialists Across London
Professional damp investigations, waterproofing, timber treatments, structural repairs, ventilation and specialist decorating across London.
Problem finder
Start with what you can see.
Choose the closest visible symptom. These guides explain possible causes and the next useful checks; they are not a diagnosis without inspecting the property.
Rain and external moisture
Damp patch or staining
Understand possible causes →Humidity and cold surfacesBlack mould
Understand possible causes →Low-level moisture and saltsSalt deposits
Understand possible causes →Damaged internal finishesPeeling paint or failed plaster
Understand possible causes →Below-ground waterWet basement
Understand possible causes →Decay and moistureSoft or rotten timber
Understand possible causes →Window moistureCondensation on windows
Understand possible causes →Movement and masonryCracks or movement
Understand possible causes →Our expertise
Complete protection for your property.
We identify the source of the problem before recommending work, helping you avoid temporary fixes and unnecessary expense.
Condensation control
Ventilation, humidity and cold-surface measures designed to reduce recurring condensation and mould risk.
Waterproofing
Protection for vulnerable walls, floors and structures affected by above-ground water ingress.
Basement tanking
Below-ground waterproofing options considered against the structure, water pressure and intended use.
Timber treatments
Investigation and treatment for timber affected by moisture, decay or wood-destroying organisms.
Structural repairs
Careful investigation and practical repair options for cracks and related structural defects.
DPC injection cream
Targeted remedial DPC work for suitable masonry where rising damp has been properly established.
Specialist replastering
Compatible preparation and replastering after treatment for a clean, durable finish.
Painting & decorating
Careful preparation and finishing once moisture sources and substrate defects have been addressed.
A considered approach
Fix the cause, not just the visible damage.
Damp can come from several sources. Our first job is to understand what is happening, explain it clearly and recommend the most appropriate next step.
✓Clear assessment
We inspect the affected areas and discuss the likely cause.
We inspect the affected areas and discuss the likely cause.
✓Transparent proposal
You receive a clear scope of work before making a decision.
You receive a clear scope of work before making a decision.
✓Careful delivery
Our team treats your property with respect from preparation to finish.
Our team treats your property with respect from preparation to finish.
Recent customer feedback
Trusted for careful work and clear communication.
Recent review highlights are summarised below. Follow the review-platform links to read the original customer feedback.
Bathroom mould and ventilation
Mould treatment, a replacement extractor fan and a protective paint finish were completed professionally, with the room left clean.
Victorian terrace damp proofing
The client highlighted knowledgeable advice, straightforward communication, tidy working and a high-quality damp-proofing and plastering result.
Flood-damaged flooring and subfloor
Flooring and rotten subfloor repairs were coordinated with decorating work, regular updates and practical support for the insurance report.
Real Sherifi Group projects
Site evidence, not stock photography.
Genuine photographs from London property-care work, showing the investigation, remedial process and finished results.
Damp treatment & replastering
Wall finishes were removed, the substrate prepared and the agreed remedial system completed before specialist replastering.
Before · treatment · finish
Diagnosis before specification
Moisture readings and thermal checks help define the extent and likely source of a problem before work is recommended.
Findings · photographs · scope
Timber-floor investigation & repair
Damaged boards were opened for inspection and repair, followed by clean reinstatement and a finished living space.
Inspect · repair · reinstate
More completed work
Clean reinstatement, ready-to-use rooms.
Request an assessment
Send photographs by WhatsApp for an initial conversation.
A more useful property-care process
Diagnosis, records and a defined scope.
The comparison below explains the practical difference between a patch repair and an investigation-led service. It does not refer to any named competitor.
A basic patch repair may
- Treat only the visible mark
- Rely on verbal advice
- Use a generic product regardless of construction
- Provide limited photographic records
- Leave guarantee terms unclear
- Offer little drying or decorating guidance
Sherifi Group's process
- Investigates the likely moisture source
- Offers a written scope and report options
- Selects a system for the structure and intended use
- Records visible findings and agreed work
- States guarantee terms in writing
- Provides project-specific aftercare guidance
Why treatments fail
The visible patch is not always the cause.
Lasting remedial work depends on identifying the moisture route, choosing compatible materials and allowing the building to dry correctly.
Read the full guide- Painting over active mould
- Injecting a DPC without confirming the cause
- Using incompatible plaster on salt-affected walls
- Ignoring external ground levels and drainage
- Reducing ventilation while moisture remains high
- Tanking without considering water management
Simple and transparent
From first call to a lasting repair.
A straightforward process designed to give you clarity and confidence.
01 — Tell us
Share the problem
Call or send your details, location and a short description of what you have noticed.
02 — Assess
We inspect and advise
We identify likely causes, answer your questions and define the right work.
03 — Resolve
Professional completion
We complete the agreed treatment and leave you with a clear outcome.
Frequently asked questions
Useful answers before you book.
How do I know what type of damp I have?
Similar marks can have very different causes. An assessment considers the position of the moisture, ventilation, external defects and the construction of the property before treatment is recommended.
Do you cover my area?
We work across Central, North, East, South and West London. Send us your postcode and we will confirm availability.
Can I request a free quotation?
Free quotations are available for clearly defined remedial works. A professional damp survey with written findings and recommendations is £220 + VAT.
Do you also complete plastering and decoration?
We provide specialist replastering and painting and decorating where these form part of the agreed property-care work.
Assessment & quotation
Need help identifying the cause?
Free quotations are available for clearly defined remedial works. Our Professional Damp Survey & Written Report is £220 + VAT and includes site findings, photographic evidence and written recommendations.
Office
020 8970 7471
WhatsApp
07950 225214
Email
[email protected]
Areas we cover
Professional Property Care Services Across London
Sherifi Group Ltd provides specialist damp proofing, waterproofing, timber treatment, ventilation, structural repairs and decorating services throughout London.
Across the capital
Central London · North London · East London · South London · West London
Local London enquiries
Enfield · Camden · Islington · Hackney · Greenwich · Fulham · Kensington · Chelsea · Westminster · Canary Wharf · Richmond · Hampstead · Maida Vale · Notting Hill