IS 4671 : 2018
Expanded polystyrene for thermal insulation purposes
Current edition: 2018
BIS department: CHD
What this standard covers
This standard prescribes the requirements and the methods of sampling and test for expanded polystyrene in the form of rough shapes, finished boards and blocks, and pipe sections/segments for thermal insulation primarily for use in refrigeration and building applications in the temperature range —150° to 80°C.
Scope, quoted from IS 4671 : 2018. Read the full standard
Requirements and tests, as the standard names them
- 5.2 Dimensions
Sub-clause names as printed under the heading “REQUIREMENTS” in IS 4671 : 2018. Values and limits are deliberately not reproduced here — read them in the standard itself.
How the standard is organised
- 4 TYPES
- 5 REQUIREMENTS
- 6 PACKING AND MARKING
- 7 SAMPLING
Edition history (per the BIS registry)
- IS 4671 : 2018 — current edition
Where this standard is used on NirmanDost
CPWD DSR 2021 (Civil Works)
| Item code | Description (verbatim) |
|---|---|
| 26.67 | Providing and fixing of external thermal insulation and composite system with First layer of self-extinguishing type Expanded Polystyrene (EPS) insulation boards of 120 mm thick (max 1mX0.5m section), confirming to IS 46… |
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Materials market
Also cited in the Materials Market rate library and SKU sheets.
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Notes
- Status and titles come from the official BIS published/withdrawn standards registry (standards.bis.gov.in exports, July 2026 snapshot). Editions change — verify on the BIS portal before contractual use.
- The standard text is copyright BIS. NirmanDost shows registry metadata and links to the official source only — it never rehosts the document.
- Generated 2026-07-27.