Masonry Restoration Products and Cleaners

Masonry cleaners are specialized chemical or mechanical treatments used to remove dirt, efflorescence, biological growth, and staining from brick and stone surfaces without damaging the substrate. They are typically used prior to restoration work, such as joint repair or sealant application, to ensure proper adhesion and to reveal the true condition of the underlying masonry.

Damaged stone is typically repaired by cleaning the affected area, removing loose or deteriorated material, and applying a compatible repair mortar or patching compound matched to the stone's color and texture. For joint-related damage caused by building movement, installing a protective system like a lead flashing cap alongside new sealant helps prevent recurring moisture penetration and joint failure.

Stone masonry is cleaned using low-pressure water washing, mild detergents, or specialty masonry cleaners depending on the stain type, always starting with the gentlest effective method to avoid damaging the stone surface. Testing on a small inconspicuous area first is recommended, and mechanical or acidic cleaning methods should be avoided on sensitive historic stone without professional guidance.

Sealant failure is commonly caused by ongoing building movement and settlement that stresses the joint beyond the sealant's elastic capacity, along with prolonged UV and moisture exposure. Installing a protective cap, such as a soft lead flashing strip, over the sealant reduces environmental exposure and buffers movement stress, significantly extending the sealant's functional lifespan.

Type A profiles are designed for flat, horizontal joint configurations, while Type B profiles are engineered for 90-degree joints where a horizontal surface meets a vertical surface, such as at copings and parapets. Selecting the correct type ensures the protective cap properly conforms to the joint geometry for a lasting seal.

Yes, many masonry restoration products, including joint protective systems like lead flashing caps, are also specified for new construction to proactively prevent future sealant failure caused by anticipated building settlement. Installing these systems during original construction reduces long-term maintenance costs and moisture-related repair needs.