Chemical and jet-washing of stained or weathered brickwork prior to repointing.
Old buildings accumulate a lot of surface dirt over many years. General staining is caused by a gradual build-up of carbon deposits in the air. Other stains can be caused by random paint splashes, cement stains, or dripping pipes and damp walls which cause a build-up of moss on the brick surface.
Green algae and moss is usually easily removed by jet washing alone. Paint, cement or carbon staining needs to be treated with the appropriate chemical to soften or break down the offending stain, prior to jet washing.
A B Kirby & Sons are experienced in these procedures and the use of the appropriate chemicals needed. The correct chemicals are usually applied with a low pressure sprayer or brushed on. After the necessary dwell time, they are hosed off with a commercial jet-washer. This action may need to be repeated several times to remove all of the staining, leaving the brickwork clean and ready to be repointed.
A B Kirby & Sons do not remove paint areas from brickwork.
Tell us about the building. References available on request.