Similar International Standards
EN 13168:2012+A1:2015CEN (European Committee for Standardization), Europe
HighCurrent
Thermal insulation products for buildings - Factory made wood wool (WW) products - Specification
Specifies requirements for factory-made wood wool slabs for building thermal and acoustic insulation, which directly aligns with IS 3308.
BS 1105:1981BSI (British Standards Institution), UK
HighWithdrawn
Specification for wood wool cement slabs up to 125 mm thick
A direct contemporary, covering wood wool slabs made with cement binder, identical in scope to the main product type in IS 3308.
DIN 1101:1992-06DIN (Deutsches Institut für Normung), Germany
HighWithdrawn
Lightweight wood-wool panels and composite panels as thermal insulating material for building construction; requirements, testing
Historically significant German standard for wood wool panels ('Heraklith') for thermal insulation, a direct product equivalent.
Key Differences
≠The current European standard (EN 13168) uses a detailed designation code system for products based on declared performance levels (e.g., thermal resistance, bending strength, fire class). IS 3308 uses a simpler classification (Type A, B, C) based on end-use application (e.g., for roofing, partitions).
≠Fire performance in EN 13168 is classified using the comprehensive Euroclass system (A2 to F). IS 3308 refers to IS 1642 for fire resistance tests, which provides a time-based rating (e.g., 1/2 hour, 1 hour) and is a less nuanced system for reaction to fire.
≠IS 3308 is prescriptive, specifying maximum thermal conductivity values for given density ranges. EN 13168 is performance-based, requiring manufacturers to declare a design lambda value (λD) determined through statistical analysis (90/90 principle) and aging procedures.
≠EN 13168 includes requirements for CE marking, which involves Factory Production Control (FPC) and declaration of performance (DoP), a mandatory regulatory framework for products sold in the EU. IS 3308 specifies its own certification marking scheme under the Bureau of Indian Standards (BIS).
Key Similarities
≈All standards define the fundamental product composition as wood wool (excelsior) bonded with a mineral binder, primarily cement.
≈The primary intended uses are consistent across all standards: thermal insulation, acoustic absorption, and providing a base for plaster or other finishes in walls, roofs, and partitions.
≈Core physical properties such as bending strength (modulus of rupture), density, and dimensional stability are mandatory tests in both IS 3308 and its international counterparts.
≈All standards contain requirements for the general appearance of the slabs, specifying they should be sound, free from large cracks, and have reasonably true edges and corners.