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Birla Opus — Waterproofing Exact PIS Master V356

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Birla Opus Alldry waterproofing exact PIS master covering Wall Fix 4, Wall n Roof 10/12, Salt Seal and Total 2K systems.

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Wall Fix 4

Current PIS gives 40–45 sq ft/L effective coverage, 10% diluted primer coat followed by undiluted coat, 4–6 hour recoat period, 5-bar positive-pressure resistance and up to 5-year exterior-wall system warranty under the applicable exterior topcoat. citeturn0search19turn0search21

Wall n Roof 10

Current PIS gives a horizontal 3-coat system at effective 10 sq ft/L; vertical fresh painting 2 coats at 25 sq ft/L and repainting 1 coat at 30–35 sq ft/L. The self-priming coat is 35% diluted, followed by undiluted coats with 4–6 hour recoating. citeturn0search20

The current product page states 10-year waterproofing warranty and 10-bar pressure resistance. citeturn0search10

Wall n Roof 12

The current PIS states up to 12-bar positive hydrostatic pressure, up to 3 mm crack bridging, up to 12°C surface-temperature reduction, 12-year terrace warranty and up to 14-year exterior-wall warranty subject to conditions. citeturn0search18

Salt Seal

Current PIS describes a water-thinnable alkali-block primer designed for primary efflorescence resistance, penetration into surface pores, pH up to 12 and up to 8-year exterior-wall system warranty as an undercoat. citeturn0search23

Total 2K Flex

Current product page states up to 5-year waterproofing warranty, crack-bridging/flexible-film positioning, 3:2 powder-to-liquid mixing and 4–6 hour gap between two coats on a saturated-dry surface. citeturn0search7

Total 2K

Current product page separately lists Total 2K with up to 3-year moisture protection, potable-water-safe and multi-surface positioning. It must not be merged with Total 2K Flex. citeturn0search8

System-selection rule: wall dampness, efflorescence, roof/terrace exposure and crack movement are different problems. The website will select the system by surface + moisture source + exposure + substrate preparation rather than calling every product “waterproof paint.”
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