CONSERVARE^® Hydroxylating Conversion Treatment (HCT) is a novel, two-component, waterborne treatment which protects and strengthens deteriorating carbonate building stones such as marble, limestone, dolomite and travertine.

CONSERVARE^® HCT (patents pending) forms a stable, well-adhered, hydroxylated, conversion layer on carbonate mineral grains. This conversion layer dramatically increases the resistance of marble and limestone surfaces to acid attack, and improves the ability of a variety of chemical compositions to react with or bond to such surfaces.

• Consolidating effect - Produces "bridges" at points of grain contact which strengthen sugaring/granulating marble surfaces.
• Activating effect - Improves adhesion and performance of CONSERVARE^® Consolidation Treatments. Enhances adhesion of cementitious and other repair materials.
• Passivating effect - Dramatically reduces dissolution of carbonate stones in acid rain.
• Penetration - Improves surface wetting to assure deep penetration of conservation treatments through the weathered surface zone to sound stone. Minimizes potential for delamination or flaking of treated layers.
• Water Vapor Permeability - Treated surfaces retain natural water vapor permeability.
• Thermal Expansion Characteristics - Compatible with carbonate building stones.
• Durability - Conversion layer not subject to bio-deterioration, UV degradation, dissolution in water or acid rain solutions.
• Appearance - Colorless and UV stable.
• Soiling Characteristics - Reduces biological soiling of carbonate surfaces.
• Curing requirements - Reacts on contact. Treated surfaces are ready for subsequent treatments or surface repairs upon drying.
• Safety - Odorless, waterborne formulation is safe to use, harmless to the environment. Requires no special precautions for handling or clean-up.