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Carbonate Staining (Lime Run)

Lime Run is a hard white or grey surface crust that usually emanates from mortar joints or runs down from a hole or crack between brick and mortar joints. The way to differentiate between Lime Run and Efflorescence is that Lime Run does not disappear when wet.  

It occurs when water deposited or collected in the wall during construction dissolves water-soluble calcium compounds in the brick or mortar. Over a prolonged period of time, the water migrates through openings in the wall surface and, as the water evaporates, the dissolved calcium reacts with the atmosphere to produce a hard calcium carbonate crust on the masonry surface.

Carbonate Staining (Lime Run) Cleaning

Cleaning

Always clean Lime Run off as quickly as possible as the hard crust that is formed when it begins to carbonate is far harder to remove. We use a specially formulated, tried and tested cleaning agent to achieve the best possible results.

Carbonate Staining (Lime Run) Prevention

Prevention

Prevention is far better than cure. There are a number of precautions that can be taken such as; protecting brick work from rainfall. making sure that mortar joints are fully filled so that water cannot collect in air pockets and ensuring correct installation of damp proof course or membrane.

Related Case Studies

Removing calcium carbonate salts from motorway underpass

We recently received a call from The Highways Agency seeking help with removing calcium carbonate deposits that had formed on the surface of the road, in the Newport tunnel on the M4.

Read full case study

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Client Testimonials

“The work was carried out to a very high standard and we would not hesitate to use you again.”

Cathering Stott - Eunomia Research & Consulting

“Excellent to deal with from start to finish, very professional in their attitude and kept us informed at every stage. ”

Esther Hunting - Warwick Estates

“I just wanted to let you know that we are on site today and think that the building is looking so much better, so thank you very much for that.”

Anita Pitts - Hartwell House

“Thank you for sending the photos, it all looks amazing! ”

Robbie Irens - Gordon and Co

“The offending Graffiti was removed without trace using pressurised steam.”

Lucy - Jones Lang LaSalle

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

Joe - Hillcrest Estate Management

Our Accreditations

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