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IS 10567:1983 is the Indian Standard (BIS) for adhesives for fixing expanded polystyrene slabs. This Indian Standard specifies the requirements and test methods for hot-applied bitumen-based adhesives used for fixing expanded polystyrene (EPS) slabs. It is primarily used for providing thermal insulation on roofs and other parts of buildings, ensuring adequate bond strength and material stability.
Specifies requirements for adhesives used for fixing expanded polystyrene slabs in thermal insulation applications.
EAD 040083-00-0404EOTA (European Organisation for Technical Assessment), Europe
HighCurrent
External Thermal Insulation Composite System (ETICS) with renderings
Specifies requirements for the entire ETICS system, including detailed performance criteria and test methods for the adhesive component.
ASTM E2568 / E2568M-17ASTM International, USA
HighCurrent
Standard Specification for Polymer-Based (PB) Exterior Insulation and Finish Systems (EIFS)
Defines the requirements for EIFS systems using EPS, including the performance of the adhesive used to bond the insulation.
ETAG 004:2013EOTA (European Organisation for Technical Assessment), Europe
HighWithdrawn
Guideline for European Technical Approval of External Thermal Insulation Composite Systems (ETICS) with Rendering
The direct predecessor to the current EAD, it established the system-based approach to testing, including adhesive bond strength.
BS EN 13494:2002BSI (British Standards Institution) / CEN (European Committee for Standardization), UK/Europe
MediumCurrent
Thermal insulation products for building applications - Determination of tensile bond strength of the adhesive and of the base coat perpendicular to the faces
A specific test method standard for determining the bond strength of adhesives, which is a key parameter within IS 10567.
Key Differences
≠IS 10567 evaluates the adhesive as a standalone component, whereas modern international standards (EAD/ASTM) approve the adhesive as part of a complete, tested 'system' (ETICS/EIFS), including the insulation, mechanical fixings, and render.
≠International standards mandate advanced aging and durability tests, such as hygrothermal cycles (heat-rain) and freeze-thaw cycles, before testing bond strength. IS 10567 only requires testing after simple water immersion.
≠Modern standards like EAD 040083 often prioritize the failure mode. Cohesive failure within the EPS foam is the desired outcome, indicating the adhesive bond is stronger than the insulation itself. IS 10567 focuses solely on achieving a minimum numerical strength value.
≠IS 10567 is from 1983 and has been withdrawn. It reflects older adhesive technology. Current international standards cover modern polymer-modified cementitious and dispersion-based adhesives with significantly higher performance and wider application ranges.
Key Similarities
≈The fundamental purpose of all standards is to ensure adequate adhesion of expanded polystyrene insulation boards to a construction substrate, primarily concrete or masonry.
≈Both the Indian standard and its international counterparts rely on a tensile pull-off test (measuring bond strength perpendicular to the face) as a primary method for assessing adhesive performance.
≈All standards recognize the importance of adhesive workability, implicitly or explicitly specifying requirements for consistency and setting time (pot life/open time) to ensure practical on-site application.
Parameter Comparison
Parameter
IS Value
International
Source
Tensile Adhesion (Dry Condition)
Minimum 0.25 N/mm² (250 kPa) on concrete substrate.
Minimum 0.08 N/mm² (80 kPa) OR cohesive failure in the insulation board.
EAD 040083-00-0404
Tensile Adhesion (Aged/Wet Condition)
Minimum 0.1 N/mm² (100 kPa) after 7 days water immersion.
Minimum 0.08 N/mm² (80 kPa) after hygrothermal cycles.
EAD 040083-00-0404
Failure Mode Criterion
Not specified; only the strength value is required.
Cohesive failure in the EPS board is often required, demonstrating the bond is stronger than the board.
EAD 040083-00-0404
Shear Strength
Minimum 0.25 N/mm² (250 kPa).
Not typically a primary standalone test; system performance under wind load and dead load is evaluated instead.
EAD / ASTM System Approach
Setting Time
Initial setting time not less than 4 hours.
Specified as 'Open Time', typically ≥ 20 minutes, verified by a bond strength test.
ETAG 004
Testing Philosophy
Component-based: Adhesive tested on a standard concrete block.
System-based: Adhesive tested as part of the full ETICS/EIFS assembly.
ASTM E2568 & EAD 040083-00-0404
⚠ Verify details from original standards before use
Key Values5
Quick Reference Values
Softening Point (Ring & Ball)Not less than 95 °C
Penetration at 25 °C15 to 30
Flash Point (Pensky-Martens)Not less than 200 °C
Volatile MatterNot more than 30 percent by mass
Bond Strength Test LoadNo failure under 2.5 kg pull for 1 minute
What is the main application of the adhesive specified in IS 10567?+
It is used for fixing expanded polystyrene (EPS) insulation slabs to substrates, typically on roofs for thermal insulation.
What is the minimum required softening point for this adhesive?+
The softening point shall not be less than 95 °C when tested by the Ring and Ball method as per IS 1205 (Table 1).
How is the bond strength verified?+
A 100mm square EPS block is bonded to a concrete block. After 24 hours, a pull of 2.5 kg is applied. There should be no failure of the bond or the EPS block itself (Clause 5.6).
What is the maximum permissible volatile matter content?+
The volatile matter content shall not be more than 30 percent by mass (Table 1).