How to treat External Masonry - DIY
Property Repair Systems
|External Water repellent|
|How to treat damp walls - (don't forget to eliminate the moisture source)|
Quick DIY Master Class in Dampness and Condensation - become your own Expert in 1 hour! Buy our "Dampness in Buildings" reprinted book by the great expert Graham Coleman. A great read, short and to the point.
Firstly, check the outside of the building for rainwater penetration - if the walls are absorbing moisture apply a water repellent - UltraProof
UltraProof- the best treatment for external masonry, brick, stone and render. Applied in a single flood brush or spray coat, it forms an invisible (to the naked eye) layer just below the surface of the masonry, repelling moisture but allowing the wall to breathe through its micro-pores.
UltraProof benefits are as follows;
Can also be used as a Primer/Sealer on damp floors, and to eliminate dusting from concrete floors.
Available in 5 litre and 25 litre cans, ready to use
UltraProof with application tools
How to treat outside walls to prevent penetrating dampness - one coat of UltraProof
|How to install a Damp Proof Course|
Secondly, check the inside of the building for evidence of 'salts' in the lower 1 metre of the outside walls - if the walls are suffering from rising dampness you may need a new Damp Proof Course - we can give you the name of a Qualified Dampness Surveyor in your area.
If necessary, removed all plaster to at least 1.2 metres above floor level and inject a new DPC using Quick Cream DPC.
Quick Cream DPC - the best cream based emulsion for creating an injected DPC. No odour, no staining, non flammable.
Available in 380cc, 1000cc tubes and 3 litre tubs.
Quick Cream treated surface - right hand side - DPC repellent in action
|How to treat damp plaster - (don't forget to eliminate the moisture source)|
Thirdly, check the plaster for signs of white, fluffy salts - efflorescence - this indicates wetting and drying-out. If you have cured the source of the moisture and the plaster is still firm and not hollow, you could now treat the plaster with Salt Neutraliser
Salt Neutraliser - the best treatment for 'salty' plaster, when the cause is wetting and drying-out.
Salt Neutraliser benefits are as follows;
Available in 5 litre cans, ready to use
This wall should be stripped back to bare masonry and treated with Salt Neutraliser
Efflorescing Salts - long chain crystals, easily seen under an 8 x magnifier - can force paint, wall paper and skim plaster off the wall
Even wall tiles can be pushed off by 'salts' expanding beneath
Mould growth is caused by Condensation forming on the surface or inside the building material
Condensation is caused by high levels of moisture in the air condensing on the coldest surfaces in the room, often at night when the temperature falls
Surfaces will be colder if they are damp - rising and penetrating dampness, blocked wall cavities or lack of them, can all increase dampness
Dampness can be caused by common defects, like blocked gutters overflowing, poor pointing, cracked external render.
For immediate help (in office hours) ring our dedicated team of Experts - David, Angela or Kathy will help to diagnose your dampness problem FREE. Ring them on 01626 331351 or use our special CHECKLIST by clicking here.
This wall needs to have a DPC injected, the plaster cut back from contact with the solid floor, then treated with Salt Neutraliser, and finally repainted with Anti-Mold Emulsion
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Salts and mould on a wall suffering from rising and penetrating dampness
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