Damp problems
Damp and salt-contaminated plaster
Understand salt deposits, damaged plaster and appropriate reinstatement after damp treatment.
Why diagnosis matters
Treat the cause, then repair the damage
Moisture can carry salts into plaster. Some remain active after the wall source is corrected, attracting moisture from the air and causing finishes to fail if the reinstatement specification is unsuitable.
Complimentary survey
Book Your Complimentary Survey
Over 35 years of independent expertise. Written findings included. No sales pressure. No obligation.
Book your complimentary surveyTechnical review
Dan, Director / Surveyor
Last reviewed: July 2026. Advice is general until the property, access and visible evidence have been assessed.
Guarantee & aftercare
Written guarantee terms are matched to qualifying work, with inclusions, exclusions and aftercare explained before acceptance.
What we consider
Possible causes and lookalikes
Ground salts associated with rising moisture
Salts in masonry and old chimney flues
Inappropriate dense finishes
Insufficient drying before decoration
Inspection method
A clear work sequence
Step 1
Confirm the moisture source
Step 2
Define removal height and extent
Step 3
Prepare the background carefully
Step 4
Apply a suitable plaster system and aftercare
Scope boundaries
Honest about what the work does—and does not—cover
The correct system depends on the substrate, salts, wall construction and planned finish. We do not rely on one plaster specification for every property.
Complimentary specialist survey
Your Complimentary Specialist Survey
Backed by over 35 years of independent damp and timber expertise.
We believe in diagnosis before treatment. That's why we offer every homeowner and property manager in Dorset, Hampshire and Wiltshire a complimentary specialist survey — carried out by an experienced specialist, not a salesperson.
Over 400 combined reviews across Google and Checkatrade. Over 35 years protecting Dorset homes.
Common questions
About damp and salt-contaminated plaster
Can I skim over salt staining?+
Skimming alone is unlikely to manage active salts or an unresolved moisture source. The substrate and source should be assessed first.
What is renovation plaster?+
It is a specialist plaster type used in some damp-reinstatement specifications. Suitability depends on the wall and treatment design.
Will the wall look dry immediately?+
Not necessarily. Residual moisture takes time to leave, even after the source has been controlled.
Is the specialist survey really free?+
Yes — completely. We offer every homeowner and property manager across Dorset, Hampshire and Wiltshire a complimentary specialist survey at no charge. This includes an on-site inspection, written findings, a clear scope of any recommended work, and an honest referral if the problem falls outside what we do. You pay nothing for the survey. You only pay if you commission the remedial work, and you are under no obligation to do so. The reason we do this is straightforward: we believe in diagnosing the problem before recommending a treatment. A proper inspection takes time, and we'd rather invest that time up front than quote a solution before we've understood the cause.
Not sure if this is your problem?
That's exactly what the survey is for. Book your complimentary specialist survey and one of our experienced team will identify the cause on-site, consider the alternatives, and give you written findings — at no charge and with no obligation.
Related services
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Recent work
Photographed on our own projects
A selection of real jobs from this service, photographed on site across Dorset, Hampshire and Wiltshire.
Reviewed by local homeowners
Trusted across Dorset, Hampshire and Wiltshire
Independent feedback from customers on Google and Checkatrade — alongside over 35 years of damp proofing and plastering experience.
Next step
Claim your complimentary survey before choosing a treatment
Tell us what you can see, when it changes and where the property is. Photographs can help us triage the next step.