Uses:

ASMACOAT WP 900 can be used for a wide range of waterproofing applications viz. Roofs, Basements and Foundations, Tunnels and bridges, Terraces and Balconies, Car Decks, Plaza Decks, Planter Boxes, Retaining Walls, Internal Wet Areas (kitchens, bathrooms), Fountains and Pools..., etc. ASMACOAT WP 900 can also be used in sewages works and tanking applications in areas where aggressive ground water conditions prevail.

Surface Preparation:

New concrete surfaces should be fully cured. Substrate should be free from dust, oil, curing agent residues and other contaminants. Voids and honeycombs must be patched with concrete repair products. Allow the patched area to cure before applying the membrane.

All metal surfaces should be made clean of paint, oils, rust and other contaminants. Abrade to expose bright metal then wipe clean the surface prior to priming.

Normally good quality concrete substrates do not require priming. However, porous surfaces require priming. To reduce blisters caused by air entrapment on rough and porous surfaces, use ASMACOAT WP 900 thinned with 50% ASMACOAT WP SOLVENT as a primer. To join fresh applications of ASMACOAT WP 900 to those that are more than 48 hours old, apply diluted ASMACOAT WP 900with 50% ASMACOAT WP SOLVENT as a primer at the interface.

Expansion and movement joints should be sealed with ASMACO PU 90 / ASMACO PU 90 L PU Sealant. When cured, a 200 mm wide layer strip of ASMACOAT WP 900should be applied centered over all sealed joints. While the membrane is still wet, cover with a correct cut stripe of fiber mesh and press it to soak. Saturate the fiber mesh with another coat of ASMACOAT WP 900 until it is fully covered. Allow curing before applying the waterproofing membrane.

Specifications

roperties	Typical result
Appearance	Black medium viscosity liquid
Specific gravity	1.29
Elongation at break	600%
Tack free time @ 25oC, 50% RH	12 hours
Full cure @ 25oC, 50% RH	2 days @ 1.3 mm thickness
Tensile strength	2.5 N/mm2
Crack bridging	No loss, passes the test
Water vapour transmission	0.03g/h/m2
Swelling in water	Nil

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