A gypsum-board false ceiling in India should be built with boards certified to IS 2095 (Part 1):2023, BIS's current standard for plain gypsum plaster board, licensed under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018. Wood or PVC panel ceilings should ask for plywood to IS 303:2024 or, in a bathroom-adjacent or exhaust-duct zone, marine-grade IS 710:2024. Neither the GST rate nor a GI-channel BIS spec for false-ceiling work could be independently verified in this registry — ask for both in writing rather than assuming.
What an ISI mark on a gypsum board actually certifies
"ISI-marked board" is a specific, checkable claim, not a generic quality phrase. BIS licenses gypsum plasterboard manufacturers under IS 2095 (Part 1):2023 — the current standard specifically for plain gypsum plaster board — through Scheme-I of the BIS (Conformity Assessment) Regulations, 2018, the same licensing regime BIS uses across construction materials. A licensed manufacturer carries a BIS licence number you can look up; a board sold as "gypsum board" with no licence number attached is not making a checkable claim at all.
BIS also maintains companion parts of the same standard for coated/laminated gypsum board and for reinforced gypsum board and ceiling tiles specifically, confirmed present on BIS's own product-manual listing alongside Part 1 — evidence that ceiling-grade gypsum board is its own certified category, separate from wall-partition gypsum board, even though this registry only opened Part 1's document in full. Ask your contractor which part their board is licensed under; a board licensed only for wall partition is not the same certified product as one licensed for a ceiling tile.
Wood or PVC panel ceilings — the plywood standard that applies
This calculator's "Wood/PVC" option is the highest-priced variant, and the wood half of it is plywood, not solid timber. BIS's current standard for general-purpose plywood is IS 303:2024, licensed under the same Scheme-I regime as gypsum board. For a false ceiling near a kitchen exhaust duct, a bathroom, or anywhere condensation can form on the underside of the panel, ask for marine-grade plywood to IS 710:2024 instead — a standard whose adhesive requirement specifically calls for a synthetic resin conforming to BWP (boiling-water-proof) type bonding, the grade built to survive sustained moisture rather than just resist it briefly.
| Location | Standard to request | Why |
|---|---|---|
| Dry living/bedroom ceiling | IS 303:2024 general-purpose plywood | Standard Scheme-I licensing; no sustained-moisture exposure |
| Kitchen, bathroom-adjacent, AC-duct zone | IS 710:2024 marine (BWP) plywood | Adhesive must conform to BWP type of IS 848 — built for sustained moisture, not just a splash |
Both are current BIS product-manual standards administered under Scheme-I of the BIS (Conformity Assessment) Regulations, 2018.
Neither standard's product manual states a rupee figure — both are certification and testing procedures, not price lists — so use them to specify what you're buying, not to sanity-check the quote.
What the Wholesale Price Index says about plaster and cement inputs
POP (Plaster of Paris) ceilings track the "Cement, Lime and Plaster" sub-group of India's Wholesale Price Index, published monthly by the Office of the Economic Adviser. In the October 2025 release, that sub-group (a 1.64% weight in the overall WPI basket) carried an index value of 132.0 against the 2011-12 base, with a month-on-month change of −0.08% — a near-flat reading, not a spike, in the same release where the headline all-India WPI inflation rate was −1.21% (provisional, year-on-year). That is directionally useful context for a POP quote — input costs for the plaster component were not moving sharply in either direction around that release — but it is a wholesale index for a raw material category, not a retail per-sq-ft installed rate, so it cannot be used to check a contractor's quote directly.
What this registry could not verify — say so rather than guess
- ·No BIS standard for the galvanised-iron ceiling channel/grid itself was located in this pass — ask your contractor for the channel's own IS number in writing rather than accepting "GI channel" as a self-certifying description.
- ·The official GST rate-change list published after the September 2025 reform (PIB / GST Council 56th meeting) does not name gypsum board or POP among the items whose rate changed. That does not mean a specific rate is confirmed for either — it means this registry has no positive figure for either, so no GST percentage for false-ceiling material is stated on this page. The reform itself runs under Notification No. 9/2025-Central Tax (Rate), dated 17 September 2025 per the Department of Consumer Affairs — ask your contractor to cite the HSN code and rate on the invoice rather than accepting a verbal figure.
Methodology
BIS standard numbers and licensing-scheme details are taken from the current BIS product-manual PDFs for each material — IS 2095 (Part 1):2023, IS 303:2024 and IS 710:2024 — none of which state a price; the WPI reading is taken directly from the Office of the Economic Adviser's October 2025 release; the GST notification reference is taken from the Department of Consumer Affairs FAQ, not from the notification text itself, which this pass could not fetch.
Sources
- Bureau of Indian Standards — Product Manual, IS 2095 (Part 1):2023, Plain Gypsum Plaster Board — accessed 2026-09-21
- Bureau of Indian Standards — Product Manual, IS 303:2024, Plywood for General Purpose — accessed 2026-09-21
- Bureau of Indian Standards — Product Manual, IS 710:2024, Marine Plywood — accessed 2026-09-21
- Office of the Economic Adviser (PIB) — Index Numbers of Wholesale Price in India, October 2025 — accessed 2026-09-21
- Department of Consumer Affairs — Frequently Asked Questions – 3 (GST rate rationalisation, Sept 2025) — accessed 2026-09-21
- Press Information Bureau — Recommendations of the 56th GST Council Meeting — accessed 2026-09-21