Surface Preparation:

• All surfaces must be clean, dry and free from grease.

Priming & Sealing:

• Where the emulsion is to be used on porous substrates (old concrete, plaster, plasterboard etc.), it should be diluted 4 parts water : 1 part emulsion to seal the surface in preparation for further coating.

Bonding:

• EVERBUILD® 501 Universal PVA Bond can be used to bond plaster and cement renders/repair compounds.
• To bond plaster, the emulsion should be used undiluted and brushed onto the surface to be plastered.
• Fresh plaster should be applied before the emulsion dries.
• The bond strength of the plaster to the substrate meets the requirements outlined in BS5270 (Plaster bonded to glass).

To bond cementitious renders or repair compounds, two methods of use can be considered;

• Small areas:- mix EVERBUILD® 501 Universal PVA Bond with an equal amount of water and add this to the mortar/concrete mix (the emulsion exhibits excellent compatibility with cement). When added to a concrete/mortar mix, EVERBUILD® 501 Universal PVA Bond will improve adhesion and also flexural strength of the cured concrete in a similar way to conventional PVA bonding agents.
• Larger areas:- dilute the emulsion, 3 parts emulsion : 1 part water and brush onto the surface to be coated/repaired. Apply a normal concrete mix before the emulsion dries.

To ensure safe storage of EVERBUILD® 501 Universal PVA Bond, containers should be well sealed to prevent evaporation of water and the formation of skin on the surface. The emulsion must be stored at a temperature above freezing. Storage temperature of 5°C - 25°C is recommended. Higher temperatures will affect quality and cause the formation of crusts and skins, especially if the containers are not tightly closed or subjected to direct sunlight for long periods.

• Fully conforms to BS 5270
• Improves flexibility of sand cement products
• Reduced water : cement ratio for equivalent workability
• Reduces surface porosity of mortar and plaster
• Improved frost resistance