Overview
ISO 22635:2019 defines a laboratory test method for measuring dimensional changes of plastic or rubber floor coverings and certain wall coverings bonded to a substrate after accelerated ageing. The standard evaluates the suitability of a covering/adhesive combination by monitoring dimensional change over defined conditioning sequences. (Note: the term “wall covering” in this standard excludes wallpaper.)
Key topics and requirements
- Scope and principle
- Measures dimensional changes of bonded flexible resilient or textile coverings after accelerated ageing to assess adhesive/covering compatibility.
- Apparatus and materials
- Notched trowel (manufacturer-specified notch dimensions), roller (≈ 60 mm wide, mass ≈ 3.50 kg), ventilated heating chamber (20 °C–200 °C), primer (if applicable).
- Test pieces: typically (250 ± 5) mm or (300 ± 5) mm square; fibre‑cement substrate panels (~8 mm thick).
- Measuring device capable of 0.01 mm resolution over 200–250 mm (e.g., elongation meter).
- Specimen preparation
- Substrate conditioning: 6 h at (80 ± 2) °C then stored in a standard atmosphere (23 ± 2 °C, 50 ± 5 % RH) for ≥48 h.
- Covering conditioning: room conditioning (≥24 h at standard atmosphere) or elevated pre‑treatment 6 h at (80 ± 2) °C followed by 48 h in standard atmosphere.
- Adhesive sampling per ISO 15605 and prepared per EN 1067; conditioned per ISO 554 (≥24 h).
- Datum points: gauge studs fixed ~ (25 ± 1) mm from edges or edge‑to‑edge marks for measurements.
- Procedure
- Bond coverings to fibre‑cement substrate using specified trowel technique, rolling, and optional dead load.
- Apply defined preconditioning and accelerated ageing cycles (see ISO 9142 for laboratory ageing guidance).
- Evaluation and reporting
- Measure dimensional change along longitudinal and transverse datum lines before and after ageing; report results per the standard’s evaluation clauses.
Applications and users
ISO 22635:2019 is used by:
- Adhesive and flooring manufacturers for product development and quality control to verify dimensional stability of adhesive/covering combinations.
- Independent test laboratories conducting conformity testing and performance validation.
- Specifiers, consultants and installers who require documented proof of dimensional performance after accelerated ageing for material selection and installation guidance.
- Regulatory and procurement teams needing standardized test evidence.
Practical benefits include improved product compatibility assessment, reduced in-service failures (e.g., buckling, gapping), and standardized test reports for specifications and certification.
Related standards
- ISO 472 (Plastics - Vocabulary)
- ISO 554 (Standard atmospheres for conditioning/testing)
- ISO 9142 (Guide to selection of laboratory ageing conditions)
- ISO 15605 (Adhesives - Sampling)
- EN 1067 (Adhesives - Sample preparation)
Keywords: ISO 22635:2019, adhesive test, dimensional changes, accelerated ageing, floor coverings, rubber flooring, plastic coverings, fibre cement substrate, adhesive testing.