Cleaning DecraStone

Cleaning concrete masonry is both an art and a science. Following proper procedures that have been described on this website and on the chemical products packaging are important to achieving a beautiful result. The tradesman cleaning the walls must have experience to know the issues that come with walls that may be hot or cold; or even dry or wet; or walls that are heavily smeared with mortar. 

A PDF copy of this blog is available on the Resource page.

GENERAL

After the best installation methods have been followed, a proper chemical cleaning may be necessary to remove concrete splashes, excess mortar, mud, retarders, heavy efflorescence, embedded stains, rust and surface soiling. Special cleaning products, which will remove these blemishes, are available from our warehouse. Specifically the greatest problem is efflorescence, which is caused by excessive water collection within the block and is most notable during winter conditions.

PROBLEM PREVENTIION

Our architectural masonry units contain special formulated admixes to prevent  initial  efflorescence as  well as deep-water penetration. Despite these preventative measures, efflorescence may occur due to improper storage techniques or constructed walls that allow water penetration to collect within the cells of the wall. If the water is not allowed to quickly exit the concrete block then the moisture may create the efflorescence. Extreme temperature swings only complicate the problem. Winter weather is especially a frustrating time because the walls remain cold and take much longer to dry.

Cleaning measures that are recommended are provided on a pallet tag on cubes of product delivered to the job.

SPLIT FACE

For split face masonry, use only Sure Klean Custom Masonry Cleaner (no stronger than a 1:6 cleaner to water ratio) and apply with a pump up sprayer not to exceed 50 psi. Strictly follow Prosoco cleaning instructions that are provided on each container. Laboratory testing has identified that these Sure Klean products as the most effective on and compatible with these concrete block. For test results contact your representative.

GROUND FACE

For ground face masonry, use only Sure Klean Light Duty Concrete Cleaner. Cleaning methods are the same as for split face block.

High-pressure washers and muriatic acids must not be used; however, low pressure may be used. Pressure rinse with 400psi at a water flow rate of 4 to 8 gallons per minute and a 40-degree fan spray tip. Reduce water pressure to avoid damage to delicate masonry.

VELOUR FACE

Use only Sure Klean Custom Masonry Cleaner (no stronger than a 1:6 cleaner to water ratio) and apply with a pump up sprayer not to exceed 50 psi. Strictly follow Prosoco cleaning instructions that are provided on each container.