Water Guard 491

Description

Water Guard 491 is a two component polymer modified highly flexible cementitious product. It is an eco-friendly water proof coating for protection of concrete and mortar. It provides excellent adhesion, flexibility, crack bridging ability and durability. Water Guard 491 can be applied to various cementitious surfaces in marine structures, basement waterproofing, bathrooms, wet area waterproofing, swimming pools, roof waterproofing and water tanks respectively. Water Guard 491 is also suitable for potable water retaining structures and drainage culverts.

ADVANTAGES:

• Excellent elongation and flexibility
• It is highly resistance to the effects of long term weathering and durable in all natural climatic conditions
• It displays excellent bonding to both concrete and masonry
• It does not require any additional over coating
• Environmentally friendly and non-toxic in nature.
• Can be used in contact with potable water
• Crack bridging and sealing
• Excellent adhesion
• Easy to apply
• Excellent for damp proofing

TECHNICAL DATA

SURFACE PREPARATION   
The surface should be clean and sound, free of dust loose particles, grease, oil, primers from previous membrane systems or bitumen. Bitumen or primer should be repaired by cutting out to sound concrete and patching with polymer modified repair material. Cracks, holes and honey combs must be repaired prior must be repaired prior to application. Areas at brick / block walls to receive waterproofing should have brick joints evenly finished.

MIXING
Water Guard  491 is supplied  in  premeasured  units.  Slowly  add  the  polymer  powder to the                            liquid and mix  using  a slow  speed drill  machine  fitted  with  a paddle  to  a  lump  free smooth                           consistency. In all cases, water can be added up to 5 96 of the total mix. Do not rework stiffened mix by adding water. Only mix sufficient quantity of that can be used within 3o to 6O minutes.

APPLICATION   
Saturate the concrete surface with clean water. Apply first coat while the surface is still damp but free from standing water. Apply using a short stiff bristle brush, roller at a rate of 1-2mm. depending on the expected water pressure. Required thickness is achieved by applying 2 to 5 layers, taking care that each layer is not thicker than 1mm. Leave the first coat to dry for 2 to 3 hours before applying the second coat. Second coat can be rubbed down with a soft sponge, spray or trowel application is acceptable provided that the mixing ratio is adjusted to achieve the right consistency. Leave the final coat of Water Guard 491 to cure overnight and keep moist for 3-4 days before proceeding to conduct water proofing test. It is recommended that for over hollow blocks or highly porous areas a minimum of 3 to k coats at 1 mm thickness to be applied. Sandwiched coatings have a much longer functioning life compared to coatings which are exposed.

CURING       
Water Guard 491 should be protected from wind, sunshine and rain until fully cured. Keep moist for 3 to 4 days after application.