Hohmann & Barnard 2023 Product Catalog




This product is perfect for the environmentally conscious architect and historic preservationist who wants to eliminate harsh acids. It is a citric based gentle restoration cleaner. - Safer, environmentally friendly, now made more effective and blended slightly stronger to take on a wider variety of surfaces. - Relies on the action of citric and phosphoric acid for results, rather than harsh mineral acids. - Milder product that poses fewer hazards to workers and the environment. - Will not over-clean brick and stone. - Formulated for restoring brick, sandstone, unpolished granite, terra cotta and some limestone. - Ideal for maintenance. Typical Coverage Rates: 150 to 200 sq. ft./gal.

Suggested Dilution Rates:

1 Part Product Up to 3 parts water

707X Limestone Cleaner Pre-Rinse

707N Limestone Neutralizer After-Rinse

707N Limestone Neutralizer After-Rinse cleans and restores the dirtiest limestone without damaging the masonry surface, restoring its original light grey appearance. Contains no abrasive solids and will not damage the underlying surface. Developed for limestone and sandstone. - Will not harm glass. - Concentrated acid-based compound. - Must be used after 707X and 808X to neutralize the surface. Typical Coverage Rates: 150 to 200 sq. ft./gal.

This alkaline -based formula was developed specifically for cleaning heavily carbonized, extremely dirty limestone and sandstone surfaces. - Used with high-pressure washing equipment. - Most effective on extremely old limestone structures in urban areas where exposure to atmospheric pollutants is high. - Not generally effective for restoration cleaning of brick, marble or granite. Product should not be diluted. Typical Coverage Rates: 75 to 125 sq. ft./gal.


For material conformances, submittal sheets, CAD drawings and SDS sheets visit: www.h-b.com

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