Efflorescence On Fiber Cement Siding

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Efflorescence on fiber cement siding.

Fiber cement efflorescence chalking and fading is not the same thing as efflorescence and the siding is most likely painted not stained. If efflorescence occurs it can be remedied with the techniques previously described. And darks have more room to fade than lighter colors. Regardless if your fiber cement siding clad home is 10 15 years or older it s time to repaint but one thing will need to be dealt with first if your siding has a chalk like substance on it.

It s also good to know efflorescence does not harm fiber cement siding structurally nor is the siding hurt by proper surface cleaning. Stay updated on all the trends happening in the industry. Efflorescence is caused when soluble salts and other water dispersible materials come to the surface of concrete and mortars. On a home efflorescence occurs when fiber cement siding absorbs moisture whether from being uncovered prior to installation or from excess moisture entering through the back side of the substrate.

Once inside the water dissolves salts and other minerals in the substrate. It s induced by low temperatures moist conditions condensation rain dew and water added to the surface of fresh concrete to assist troweling. Paint pigments will fade with sun exposure. This substance is called efflorescence.

Actually everything fades with sun exposure.