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Interior gypsum finishing systems versus cement–sand plaster — speed, moisture limits and substrate rules.
Educational comparisons only. No material is universally “better” — suitability depends on structural design, climate, labour skill, finish standard and local supply. Costs are indicative planning placeholders; verify with quotes.
Cement–sand plaster remains the default for many exteriors and wet-tolerant interiors. Gypsum plaster systems are popular for interior dry areas seeking faster finish and smoother surfaces — but they are not interchangeable with exterior cement render. Substrate prep, thickness and manufacturer rules decide success.
Attributes are descriptive trade-offs — not scores or winners.
| Attribute | Gypsum plaster | Cement plaster |
|---|---|---|
| Approximate cost | Material ₹/m² plus skilled application; often competitive on interior finish speed | Cement + sand + labour; curing time adds programme cost |
| Strength / specification | Follow manufacturer compressive/bond data; not a structural render | Cement plaster strengths depend on mix and curing |
| Installation speed | Often faster interior finish when substrate is ready | Multiple coats and curing extend duration |
| Water resistance | Generally for dry interiors — avoid prolonged dampness | Preferred for exteriors and many wet-adjacent areas as specified |
| Wastage | Bag/set working times affect waste | Rebound and thickness variation on site |
| Finish compatibility | Smooth base for paints when done well | May need putty for premium paint finishes |
| Maintenance | Protect from leaks; repairs need compatible products | Patchable with cementitious repairs |
| Application suitability | Dry interior walls/ceilings per system approval | External walls, many interiors, wet zones as designed |
Include primer/bonding as required by maker; compare against cement plaster + putty + time.
Cement, sand, labour, scaffolding and curing water all count.
Scale indicative unit rates by your area or quantity. This is not a quote — edit rates to match local dealer prices.
Gypsum plaster
≈ 200 m²
₹9,000
Cement plaster
≈ 200 m²
₹8,000
At these rates, Cement plaster unit purchase totals less by ₹1,000. Labour, adhesive/mortar, plaster and wastage can reverse that — treat this as one line in a fuller BOQ.
Installed ₹/m² varies by city and finish grade. Use plaster calculator for cement–sand material splits if you need bag counts.
Generally no for standard gypsum interior systems. Use cementitious or other exterior-rated renders as specified.
Interior gypsum vs cement plaster comparison follows common manufacturer constraints and site practice. Always read the system data sheet.
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