Installation Instructions
Allura Fiber Cement Siding Installaon Manual
77
What Can Be Done About It?
While some efflorescence may weather away naturally on its own, it is best to take
steps to treat it using one of the methods described.
Vinegar and Water Solution
Efflorescence can be removed with a dilute solution of household white vinegar and
water. The dilution ratio is 20 to 50% vinegar in water by volume. For most cases of
efflorescence, a 25% solution works well.
For best results, follow these cleaning instructions:
1. Spray all plants and vegetation with water before and after application of the
vinegar/water solution.
2. Protect areas that will not be cleaned.
3. Wet the surfaces to be cleaned with water and let stand for 5 to 10 minutes. Flood
the entire surface area to be cleaned with vinegar and water solution.
4. Allow the solution to sit on the surface for 10 minutes.
5. Rinse the treated area with water from the top down.
For extra tough efflorescence, a second application or light scrubbing may be required.
Use a soft bristled brush or sponge and lightly scrub the area. Do not aggressively scrub
as this may damage the surface of the painted product. Rinse thoroughly with water
and allow the area to air dry. If necessary, repeat these steps until you’ve reached the
desired outcome.
House Washes
Commercially produced house wash solutions that may also be used to safely treat
efflorescence are available. Follow the manufacturer’s instructions to ensure that the
product is suitable for use on fiber cement.
Complete product details, including technical information, installation guidelines and
warranties, are available at AlluraUSA.com or at 1-844-425-5872.