Efflorescence Cement Siding

It is the result of a process in which moisture draws salt crystals to the surface evaporates and leaves a chalky substance behind.

Efflorescence cement siding.

Once inside the water dissolves salts and other minerals in the substrate. What can be done about it. A combination of three common circumstances causes efflorescence. If efflorescence occurs it can be remedied with.

While not considered a warranty issue for these reasons certainteed is still concerned with your ultimate satisfaction. 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. Soluble compounds in the masonry or adjoining materials moisture to pick up the compounds and carry them to the surface evaporation or hydrostatic pressure that causes the solution to move if any one of these conditions is eliminated efflorescence will not occur. Efflorescence is a naturally occurring white powdery deposit that can appear on cement based building materials including bricks cement walls grout and fiber cement.

Efflorescence in concrete is a whitish coloured powdered deposition of salts on the concrete surface that is formed due to evaporation of water from the concrete. Sometimes over time efflorescence can appear 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. Concrete can be stained when salts and other materials will come off the concrete surface.

The stains are normally white and are present in darker colors more than white or pale colors due to the contrast created by the chemical reaction. It is caused when water soluble salts are present in the concrete material which comes on to the surface while evaporation of water from the concrete. It can happen even though the siding materials have been properly installed. Causes usually efflorescence is primarily composed of calcium carbonate formed when leached calcium hydroxide ch from within the concrete reacts with carbon dioxide in the atmosphere.

Efflorescence is a naturally occurring white powdery deposit that can appear on cement based building materials. To recap efflorescence is the result of a natural process that can occur in cement based materials. And darks have more room to fade than lighter colors. It is the result of a process in which moisture draws salt crystals to the surface evaporates and leaves a chalky substance behind.

Actually everything fades with sun exposure. Efflorescence will be triggered by low temperatures humidity condensation and rain. It s induced by low temperatures moist conditions condensation rain dew and water added to the surface of fresh concrete to assist troweling. Efflorescence can form a thick layer on the surface which can completely hide the concrete s color or as in your case create unsightly white patches.