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Damp Symptoms
Painted Exterior Walls Rendered Exterior Walls Sandstone and Brick walls Roughcast & Render Weather Proofing

Rain penetration through masonry (known as penetrating damp) is a common problem in buildings – particularly in the case of those of solid wall construction like many buildings constructed prior to 1930. The problem is also increasingly common in buildings of cavity wall construction where cavity wall insulation has been poorly installed or used in walls that are not suitable for cavity wall insulation. Other paths through which rain can cross through a cavity wall include incorrectly positioned wall ties and mortar obstructions in the cavity.

Eliminate damp problems

Symptoms of Penetrating Damp

Frost damageMoss growthCarbon depositsSpalling brickInternal dampBossed renderAll problems illustrated caused by penetrating water

The most common visual symptom of rain penetration is damp patches on internal walls – often causing paint to flake or wallpaper to peel. However damp masonry caused by penetrating damp can also result in a wide range of other symptoms including:

          Reduced thermal resistance of damp masonry – causing heat           loss and condensation - mould & fungicide

          Moss and mould growth

          Frost damage

          Rotting of embedded timbers

          Disfiguring carbonate deposits

          Bossed Render & Spalling brick

Frost damage Spalling brick Rotting timbers