Overview
ISO 22632:2019 specifies a laboratory shear test method for measuring the adhesion of resilient or textile floor coverings and wall coverings (excluding wallpaper) bonded to specified substrates. The standard defines specimen preparation, conditioning, test apparatus and the procedure to determine shear strength (N/mm²) before and after exposure to defined temperature and humidity regimes.
Key topics and technical requirements
- Scope and principle
- Measures adhesion under shear forces; results reported as maximum shear force divided by overlap area (τ = Fmax / A).
- Apparatus
- Notched trowel (manufacturer-specified notch dimensions), roller (60 ± 5 mm width; 3.50 ± 0.05 kg mass), ventilated heating chamber (20–200 °C), and a tensile testing machine conforming to ISO 7500‑1.
- Test specimens
- Test coverings: five pieces per conditioning sequence, 60 mm × 50 mm.
- Substrates: fibre cement panels (~8 mm thick) or plywood (~5 mm thick).
- Preparation & application
- Cleaning, adhesive sampling (ISO 15605), conditioning of materials at (23 ± 2) °C and (50 ± 5) % RH (ISO 554).
- Apply adhesive with notched trowel at ~60°; overlap of 20 mm × 50 mm; roll once with specified roller.
- Conditioning sequences
- Control and accelerated ageing options (e.g., storage at elevated temperatures such as 50 °C), including pre‑conditioning of fibre‑cement panels (6 h at 80 ± 2 °C then 48 h at standard atmosphere).
- Test procedure
- Clamp specimens, align axis, crosshead speed (20 ± 2) mm/min.
- Evaluation
- Record shear strength for each specimen, classify failure modes per ISO 10365 (adhesion, cohesion, adherent failure).
- Outlier handling: discard results >15 % from the mean; procedures for multiple outliers are specified.
- Reporting
- Test report must reference ISO 22632:2019 and include adhesive and covering identification, trowel used, open time, conditioning, mean shear strength, failure types, abnormalities and test date.
Applications and who uses it
- Quality control and product development for flooring adhesives, resilient and textile coverings, and wall covering adhesives.
- Independent test laboratories and manufacturers validating adhesive performance, durability and substrate compatibility (fibre cement, plywood).
- Specifiers, architects and procurement teams requiring standardized adhesion data for compliance, tendering or performance comparisons.
- R&D teams assessing formulation changes, primers, or application methods.
Related standards
Keywords: ISO 22632:2019, shear test, adhesive test method, floor covering adhesives, wall covering adhesion, shear strength, fibre cement, plywood, tensile testing machine.
