MasterShield PEL 303

Alkyl Alkoxysilane Based Water Repellent

What is MasterShield PEL 303?

MasterShield PEL 303 is a water-based alkyl alkoxy silane having a volatile organic content lower than 350 grams per litre. It penetrates into the substrate and chemically reacts within the pores of the cementitious substrates.

Areas of Application

MasterShield PEL 303 is a clear penetrating water repellent to protect both vertical and horizontal concrete surfaces exposed to weathering effects and chloride ions. MasterShield PEL 303 can be used on old and new (cured) structures;

• Bridge decks, piers columns and beams.

• Multi-Storey car parks, building facades and balconies.

• Chimeys, cooling towers.

• Concrete pavements and pedestrian ways.

• Airport runways and taxiways.

• Exposed concrete surfaces (e.g. building façades).

• Precast concrete elements.

• Marine structures and jetties.

• Water repellence treatment of; sand – lime brickwork, hard - bake brickwork, küfeki stone, mineral rendering, absorbent natural stones.

Characteristics and Benefits

• Improves the aesthetics by reducing efflorescence, algae growth and dirt build-up.

• Surface appearance remains unchanged.

• Penetrates deep into the concrete

• Prevents water and chloride ion penetration into the concrete and protects it from freezethaw effects.

• Virtually no product evaporates during spray application, therefore more active silane can reach its intended target minimizing wastage and maximizing coverage.

• Ready for use, no dilution on the site, which means constant quality.

• Single layer application.

• Can be applied to damp substrates.

• Application equipment and spillages easily cleaned with soapy water.

• Reduces volatile organic emissions into the atmosphere in comparison with today’s commonly-used organic solvent-based water repellents.

• Provides a much safer working environment for the applicator by minimizing health hazards associated with organic solvents.

• Breathable, vapour permeable treatment