Stop Water Ingress at the Source — Inside and Out
Water ingress through walls, roofs, or around windows. We identify every entry point and apply targeted waterproofing repairs to stop it at the source.
About Penetrating Damp Treatment
Penetrating damp is caused by water entering a building horizontally through defects in the external envelope — cracked render, failed pointing, leaking gutters, defective flashings, or around window and door frames. Unlike rising damp, it can appear at any height and often worsens in wet weather. EverDry Damp carries out a systematic external and internal inspection to pinpoint every entry point before recommending targeted repairs. We work on both the exterior defects and, where necessary, apply internal waterproofing systems to provide immediate protection.
Signs You May Need Penetrating Damp Treatment
- Damp patches that appear or worsen after rain
- Damp at mid or upper wall height
- Water staining on internal walls or ceilings
- Damp spots that follow the shape of external features
- Efflorescence on inner face of external walls
Common Causes
- Eroded or cracked mortar joints
- Defective external render
- Leaking or blocked gutters and downpipes
- Failed window or door seals and flashings
- Cracked masonry or chimney stacks
Frequently Asked Questions
How do I know if I have penetrating damp rather than rising damp?
Penetrating damp usually appears higher on walls, worsens in wet weather, and follows the location of an external defect. Rising damp is typically confined to the lower metre of a wall and shows characteristic salt tide marks. A professional survey will confirm the type.
Can penetrating damp be fixed from the inside only?
In some cases yes — internal waterproofing systems can manage ingress — but wherever possible we recommend fixing the external defect first. This is the most cost-effective and permanent solution.
Will a silicone cream treatment change the look of my walls?
No — properly applied silicone cream treatments are invisible once dry. They allow the wall to breathe while repelling liquid water.
Penetrating Damp — Areas We Cover
We provide penetrating damp treatment across Newport, Cardiff and throughout South Wales.
Ready to Solve Your Damp Problem?
Free survey. Honest advice. 10-year guarantee on basement waterproofing. Get in touch today.
Book Your Free Survey
Fill in the form and we'll call you back to arrange a convenient time to visit. No charge for the survey. No obligation to proceed.