Penetrating Damp

damp proof shield logo

WHAT IS PENETRATING DAMP?

Penetrating damp occurs when water enters a building through external walls, roofs, or poorly sealed windows and doors. This usually happens because of structural issues such as cracked brickwork, damaged pointing, faulty guttering, or defective render.

As the moisture seeps through, it creates damp patches, peeling paint, and mould growth inside the home. If untreated, the constant damp can also cause timber decay, including wet rot, which affects the strength and safety of your property.

Spotting the early signs and arranging a professional assessment is the best way to protect your home and keep it dry, safe, and comfortable.

Book a Property Survey
Damp survey inspection image placeholder

Causes of Penetrating Damp

Penetrating damp is most often caused by:

  • Cracked brickwork or deteriorating mortar joints
  • Broken or leaking gutters and downpipes
  • Defective or porous render
  • Roof damage, such as missing tiles or faulty flashing
  • Poorly sealed windows or doors

These defects allow water to enter the structure, which leads to:

  • Damp patches on walls and ceilings
  • Flaking paint and crumbling plaster
  • Black mould growth, especially in corners and around windows
  • Rotting timbers and potential structural problems

Addressing the cause early prevents long-term damage and costly repairs.

Process / report image placeholder

PENETRATING DAMP TREATMENT & SOLUTIONS

At Damp Clear South West, we use proven methods to stop penetrating damp at the source and restore your property. Treatments may include:

  • Masonry Repairs and Repointing: Sealing cracks and repairing mortar joints to block water entry.
  • Gutter and Roof Repairs: Fixing leaks, broken gutters, and downpipes to redirect rainwater away from the property.
  • External Wall Coatings: Applying breathable, water-repellent coatings to protect walls against moisture penetration.
  • Internal Restoration: Removing damaged plaster, applying anti-fungal treatments, and re-plastering to a smooth finish.

Our goal is to eliminate the source of damp, repair the damage, and leave your home dry, healthy, and fully protected.

PROPERTY SURVEY

One of our qualified damp surveyors will carefully inspect the affected areas to identify the source of moisture and assess the extent of damage. You will receive a clear report with expert recommendations and a detailed quotation before any work begins.

At Damp Clear South West, we are proud to provide professional surveys, effective treatments, and skilled workmanship, all supported by our 10-year guarantee.

Book a Property Survey Today
Qualified damp surveyor image placeholder