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White Efflorescence

White Efflorescence, a naturally occurring phenomenon on brick, concrete or stone walls and floors, is a loose, powder surface deposit. It usually disappears when the surface is wet and then reappears as the surface dries. It is caused by water-soluble salts, carried in either rainwater, construction water, or groundwater; as the water evaporates it leaves the crystallized salts on the surface.

Cleaning

Pressure washing can work to remove white efflorescence once the surface has thoroughly dried. The surface must be thoroughly rinsed to ensure that no residue remains. We also use a safe detergent to ensure a thorough clean. 

Prevention

Efflorescence is a naturally occurring phenomenon and is hard to prevent. Measures to avoid efflorescence can include using concrete of maximum density and low water absorption and ensuring that building materials are stored in a dry place, off the ground.

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Related Case Studies

Bragging about Building Cleans

We have worked on a number of building cleans, where we clean up brick work and other external surfaces after building work has been completed. One of these involved removing unsightly white efflorescence from a red brick façade on a building in Braggs Lane.

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Some of our clients

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Client Testimonials

“If we need a job to be carried out at short notice they do everything necessary to make it happen, including getting required approvals to allow them to get on site and get the job done.”

Daniel Boyle - MD of Relyon Services

“The works surpassed my expectations! I will have no problem referring you to my friends and business associates.”

Andy Lane - Lane Pearson Automotive Group Ltd

“Your pressurised hot water system transformed the appearance of our outdoor wooden decking.”

Gary - Lockside Restaurant

“A safe pair of hands - thorough, cost effective and report back in a timely fashion.”

Bloq Management Services

“Please pass on my sincere thanks to guys for the demo and for getting Neptune cleaned.”

Wendy Tomlinson, Senior Conservation Officer for Cheltenham Borough Council

“They were able to remove the remnants of graffiti that had not been removed previously using chemicals.”

Joe - Hillcrest Estate Management

Our Accreditations