Rising Damp
Rising damp is caused by ground moisture drawn upward through porous masonry, typically where a damp-proof course is missing, has failed, or has been bridged externally.
Treatment involves installing a new chemical damp-proof course, addressing any external bridging, and — where necessary — replacing salt-contaminated plaster with a suitable specialist system.
Recommended Treatment Options
Depending on findings, treatment may include a new chemical damp-proof course, cavity membranes, salt-inhibitor systems, specialist replaster, external repointing or ventilation improvements — often in combination.
Frequently Asked Questions
What are the most common signs of damp?
Peeling or bubbling paint, dark patches on internal walls, mould growth, musty odours, white salt deposits and tide marks near the skirting are the most common visual signs.
What causes rising damp?
Rising damp occurs when ground moisture is drawn upwards through masonry due to a missing, damaged or bridged damp-proof course.
How is penetrating damp treated?
Treatment begins with identifying the point of ingress — often defective pointing, roofing, guttering or render — and remedying the source before internal repair.
Can damp damage internal plaster?
Yes. Moisture and mineral salts break down plaster over time, which is why salt-inhibitor membranes and specialist replaster systems are used after treatment.
How long does damp-proofing treatment take?
Duration depends on the property, the extent of the affected area and the treatment specified. We provide a clear timeline after the initial survey.
Do you work on residential properties?
Yes. We work across houses, flats, period cottages and listed residential buildings.
Do you provide commercial damp-proofing services?
Yes. We work with commercial landlords, property managers and business owners on offices, retail and mixed-use buildings.
How can I arrange a damp inspection?
Use the contact form on our website or the details listed. We will arrange a convenient time to inspect and advise.