The first thing we do is reassure them that it is nothing to be overly concerned about as it is quite common with brand new extensions. Then we take them through exactly what the white residue is and how it materialises to help put their mind at rest and prove that they needn’t panic about the issue.
Efflorescence or salt petering is a crystalline, salty deposit with a white or off-white colour that can form on the surfaces of bricks, masonry or concrete.
It will only occur when the following three conditions are met:
Yes! When any water passes through the masonry, it sets the confined salts free and causes them to dissolve and then rise to the surface.
It’s exposure to sunlight and wind that results in the water being drawn to the surface and when that water evaporates it causes the salts to be left behind.
Please don’t think that any visible salt deposits on the brickwork signify that the bricks used are insufficient or the result of a poor installation – that is most definitely not the case!
It will disappear on its own as time progresses. How long that is rides on the amount of salt levels in the masonry and the amount of rainfall received. If you want it gone more quickly there are methods of removing efflorescence.
On a dry day, try spraying it with pressurised water, applying diluted vinegar or taking a strong brush to it.
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