Penetrating Damp

Spalling brickwork, cracked cement render or pebble dash,
face of bricks blown allowing water to soak into brickwork or substrate.

Each brick can hold up to 1.5 pints of water.

Warm air inside and cold air outside causes an osmotic action and the water is drawn through the wall causing internal damp. This is commonly known as penetrating damp .

Penetrating Damp getting into internal walls causes the plaster to break down, surface cracking, flaking and a spongy texture to the surface. These are ideal breeding conditions for black spot mould and mildew which may cause health problems especially to the very young or very old.

Cement render/ Tyrolean/Pebbledash and Spa dash – usually used to cover up spalling bricks, All are water based and are virtually concrete “sponges”. Each square yard can hold up to 1 Gallon of water and the bricks beneath can hold up to 1.5 pints each. Osmosis again will cause penetrating damp.

The Remedy

Wethertex wall coating is flexible and micro – porous. Acting like an armoured skin when applied to exterior wall surfaces.

Water/Rain cannot pass through to the brickwork but any water vapour trapped in the bricks will pass through to the outside allowing the walls to breathe and therefore to dry out.

This eliminates penetrating damp, cracked and blown render, and also protects interior plaster and decorations from further damage.

Rising Damp NOT Penetrating Damp

Walls can become damp from the foundations upwards if a damp course has been breached or if no damp course exists. The capillary action of the brickwork allows water at the base of a property to permeate to the brick course above and therefore dampness will rise up the walls.

This is not Penetrating Damp.

What problems are caused by rising damp?

Rising damp will continue and cause dampness inside the property ruining décor furniture and causing rotting in the fabric of the property.

What is the remedy?

After repairs or renewal of the damp course, Wethertex Micro- porous textured wall coating applied to the exterior walls would allow the residual damp to disperse to the outside but would protect against rainfall being absorbed back into the walls therefore the property would be allowed to dry out.

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