Inspect the wall and investigate the cause
Review the damp pattern, masonry, existing damp-proof course, external ground levels and nearby plumbing or rainwater details. This helps distinguish rising damp from other sources of moisture.
Merton · SM4 · Wimbledon Case Study 2
Rising damp treatment in Merton SM4
This Merton SM4 case study follows the rising damp repair process, from hacking defective render back to bare brickwork and installing a new damp-proof course to completing the re-plaster works.
The project
Rising damp repairs for a Merton property
This Wimbledon Case Study 2 documents a rising damp treatment in Merton, London SM4. The works described include removing defective render to expose brickwork, installing a new damp-proof course and reinstating the affected walls with compatible plaster finishes.
Before work begins, the visible symptoms and surrounding construction need to be checked. High external ground levels, a bridged or defective existing DPC, plumbing leaks and penetrating moisture can create similar marks. Identifying the likely source helps ensure the proposed treatment fits the property.
The project photographs show the condition of the walls and the treatment stages. The amount of render and plaster removed, DPC method and reinstatement materials should always follow the property inspection and the wall construction.
The remedial approach
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How the rising damp treatment process works
A good repair treats the moisture pathway and the damaged finish as connected parts of the job. These are the key stages used to plan and complete a rising damp repair in a Merton home.
Hack defective render back to bare brickwork
Remove loose, hollow or salt-affected render and plaster from the affected area until sound masonry is exposed. The removal height is guided by the inspection and the selected replastering system.
Install a new damp-proof course
Where the survey supports remedial DPC work, install a new damp-proof course at a suitable level using a method compatible with the wall construction. Any bridging or external moisture source should also be dealt with.
Re-render and replaster with compatible materials
Prepare the masonry and reinstate the wall with the specified render and plaster system. A suitable salt-resistant finish can help limit residual salts affecting the new surface.
Allow the wall to dry before decorating
Fresh plaster and masonry need time to dry. Drying varies with wall thickness, ventilation, season and the materials used, so decoration should follow the system guidance rather than a fixed date.
Why the diagnosis matters: a damp meter reading on its own does not confirm rising damp. Moisture patterns, salts, wall construction and external conditions should all be considered before choosing a treatment.
Merton SM4 · Wimbledon Case Study 2 photos
Rising damp repair photographs
Browse all 20 project photographs for this rising damp repair in Merton, SM4. Select any photo to view it at full size.
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Wimbledon rising damp projects
See Wimbledon Case Study 1
This Merton SM4 project is part of Atruss Preservation’s Wimbledon case-study series. View the first project for another example of rising damp treatment work.
View Wimbledon Case Study 1
Local service · SM4
Damp proofing in Merton SM4 and nearby areas
Atruss Preservation provides damp investigation, rising damp treatment, DPC installation and remedial plastering for homes in Merton and surrounding parts of South West London. Nearby streets and properties can have different wall types and ground conditions, so the right repair starts with checking the building.
Find us and read customer feedback
Atruss Preservation map and Google reviews
The map shows Atruss Preservation’s Carshalton business address. The team provides damp proofing and property preservation by appointment in Merton SM4 and nearby South West London areas. Google hosts the current customer reviews.
Google customer feedback
Carshalton, Surrey SM5 3LW
Atruss Preservation
Damp proofing and property preservation specialists
42a Beeches AvenueCarshalton, Surrey SM5 3LW
07984 712 428
sales@atruss.co.uk
Open Google to see the latest customer feedback, business information and directions.
Common questions
Rising damp treatment in Merton SM4
What does rising damp treatment involve?
After investigating the likely moisture source, work may include removing defective render and salt-affected plaster, exposing the masonry, installing a suitable new DPC where justified, and reinstating the wall with compatible render and plaster.
Why remove defective render back to brickwork?
Loose, hollow or contaminated finishes can prevent a sound repair. Exposing the brickwork allows the masonry to be inspected and prepared, and gives the specified DPC and replastering materials a suitable substrate.
Will a new DPC fix every damp problem?
No. A new DPC is appropriate only where investigation indicates it is needed. A bridged DPC, high ground levels, leaks or penetrating moisture may require different or additional work.
When can the replastered wall be painted?
Allow the wall and plaster to dry in line with the materials used and site conditions. Avoid sealing fresh work with impermeable paint before it is ready.
Concerned about rising damp in Merton SM4?
Contact Atruss Preservation to discuss the symptoms and arrange an assessment.