Photographs can help us understand the visible symptoms, but they are not normally enough to confirm the cause. Similar damp patches can result from penetrating damp, condensation, plumbing leaks or other defects. An inspection allows us to consider the moisture pattern, the condition of the building and the likely route the water has taken.

The visible patch may dry temporarily during better weather, but it is likely to return if the source of the water has not been repaired. The affected wall or ceiling may also need time to dry fully before damaged plaster or decoration is replaced.

Penetrating damp is treated by identifying and repairing the route through which water is entering the property. This may involve repairing roof coverings, flashing, gutters, pointing, render or seals around windows and doors. Once the source has been addressed, the affected materials should be allowed to dry before plastering or decorating. Damp Doctor Sussex can carry out appropriate remedial work within the agreed scope.

Penetrating damp commonly appears as localised damp patches, staining, peeling paint, damaged plaster or a musty smell. The affected area may become noticeably worse during or after heavy rain. It can appear on external walls, ceilings, chimney breasts and around windows or roof junctions.

Penetrating damp occurs when water enters through a defect in the exterior of a property. Possible causes include damaged pointing, cracked render, leaking gutters, defective roof coverings, failed flashing, chimney defects and gaps around windows or doors. The visible damp patch may be some distance from the original entry point.

Penetrating damp is normally caused by water entering through an external defect and can appear at different heights within a property. Rising damp relates to moisture moving upwards from the ground through porous building materials. The symptoms can sometimes look similar, so the cause should be properly investigated before treatment is recommended.

Yes. Damaged roof coverings, failed flashing, chimney defects, blocked gutters and leaking downpipes can all allow rainwater to enter a property. Water can travel through roof spaces, walls and building materials before it becomes visible inside. Where the suspected defect is difficult to access, a drone survey may help provide clearer evidence of the roof or chimney’s condition.

Penetrating damp occurs when water enters a property through a defect in its roof, walls, chimney, windows or rainwater system. It can appear at different heights and may become worse during or after rainfall. The source should be identified and repaired before damaged internal plaster or decoration is replaced.