Damp Proofing and Mould Specialists in Portsmouth
Portsea Island is the most densely built area we cover, and it is almost entirely surrounded by water. Long Victorian terraces in Southsea, Fratton and North End sit alongside substantial post-war flatted stock, and everything is exposed to salt-laden wind.
Covering Dorset · Hampshire · Wiltshire
Book a survey in Portsmouth
1/3Takes under a minute. A qualified surveyor attends — never a salesperson.
No obligation, no sales visit. Your details are used only to arrange the survey.
What we find in Portsmouth
Condensation and mould dominate the caseload, closely followed by driven-rain penetration on end-terrace gables.
Southsea and Fratton hold 1880–1914 solid-wall terraces, many converted to flats. Paulsgrove, Buckland and Landport include significant post-war and system-built housing where thermal performance is poor and condensation severe.
Four things that go wrong in Portsmouth
Not a generic list. These are the defects our surveyors record most often at this postcode.
- 01
Severe condensation in flats
Small, tightly occupied flats with a single intermittent extract fan produce persistent mould on cold external walls.
- 02
End-terrace gable saturation
Exposed solid-wall gables absorb driven rain and show broad internal damp patches.
- 03
Marine salt in masonry
Hygroscopic salt loading keeps plaster damp in humid weather and defeats ordinary replastering.
- 04
Basement and lower ground flats
Below-pavement flats need waterproofing design rather than damp proofing.
Portsmouth flat work usually needs a ventilation strategy plus insulation of the cold surfaces — addressing only one of the two rarely holds.
What we do in Portsmouth
- Damp Proofing
- Condensation Control
- Mould Removal
- Timber Treatment
- Basement Waterproofing
- Insulation and Ventilation
- Roofing and Chimneys
- Masonry Protection
- Professional Drying
- Water Damage Restoration
- Drainage and Ground Water
Popular in Portsmouth
Book a complimentary damp survey in Portsmouth
A qualified surveyor attends, tests properly and writes it down. No obligation, no sales visit, no charge.
Dorset · Hampshire · Wiltshire