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ISO 26986:2010/Amd.1:2022 — Resilient Floor Coverings: Expanded (Cushioned) PVC Floor Covering Specification
Performance Requirements, Test Methods, and Classification for Cushioned Vinyl Flooring
Introduction to ISO 26986 and Cushioned PVC Floor Coverings
ISO 26986:2010, with Amendment 1:2022, specifies the requirements for expanded (cushioned) poly(vinyl chloride) floor coverings. These resilient flooring products consist of a PVC base layer, an expanded foam intermediate layer that provides cushioning and comfort underfoot, and a transparent PVC wear layer that protects the decorative print layer. Widely used in residential, commercial, and healthcare environments, cushioned PVC flooring offers a balance of durability, comfort, and aesthetic versatility.
Amendment 1:2022 updates normative references, deletes obsolete test methods, and clarifies requirements for color fastness testing using blue wool scale No. 6. The amendment also removes Class 22+ from the classification table to align with current European standardization.
The standard was developed by ISO/TC 219 (Floor coverings) in collaboration with CEN/TC 134. It provides a comprehensive specification covering classification, dimensional tolerances, physical and mechanical performance requirements, and test methods. The classification system uses a two-digit code (e.g., 21, 22, 23, 31, 32, 33, 41) where the first digit indicates the area of use (domestic, commercial, or industrial) and the second indicates the intensity of use.
| Class | Usage Area | Intensity Level | Typical Applications |
|---|---|---|---|
| 21-23 | Domestic | Moderate to heavy | Living rooms, bedrooms, kitchens, hallways |
| 31-33 | Commercial | Moderate to heavy | Offices, retail spaces, hotel corridors, lobbies |
| 41 | Industrial | Light industrial | Light manufacturing, workshops with moderate foot traffic |
Key Performance Requirements and Test Methods
The standard specifies a range of performance parameters essential for cushioned PVC flooring. Dimensional stability is evaluated through heat exposure testing, ensuring that the flooring does not shrink or curl excessively under temperature variations. The wear resistance of the transparent PVC wear layer is tested using the Taber abrasion test (ISO 5470-1) or the Frick-Taber method, with the minimum wear layer thickness specified according to the classification class.
Color fastness to light is assessed using ISO 105-B02 (xenon arc lamp test), with the amendment requiring testing to blue wool scale No. 6 and comparison against a dark-stored reference sample. Other critical properties include residual indentation (measure of the foam layer’s recovery after prolonged loading), flexibility (resistance to cracking when bent around a mandrel), slip resistance, and resistance to simulated furniture leg movement (ISO 16581).
For healthcare and institutional applications, the standard references additional requirements such as antimicrobial resistance (ASTM E645 was deleted in Amendment 1) and reaction to fire testing according to ISO 9239-1 and ISO 11925-2, ensuring that the flooring meets safety requirements in public buildings.
Engineering Insights: Installation Considerations and Performance Optimization
The performance of cushioned PVC flooring in service depends as much on proper installation and maintenance as on the intrinsic material properties. The standard’s dimensional tolerance and squareness requirements ensure that tiles and sheets can be installed with tight, uniform seams. Key considerations include:
- Subfloor preparation: The expanded foam layer is sensitive to subfloor irregularities. The standard assumes installation over smooth, level substrates per manufacturer recommendations.
- Acoustic performance: The cushioning layer provides significant impact sound reduction, making these products popular in multi-story residential buildings. The standard references impact sound insulation test methods.
- Maintenance protocols: The transparent wear layer can be maintained with regular cleaning and occasional refurbishment. The standard’s wear resistance classifications help specifiers select appropriate products for expected traffic levels.
Specifiers should note that the amendment removed the reference to EN 424 (furniture leg test) and replaced it with ISO 16581, which involves a different test apparatus. Products certified to the previous edition may not meet the updated standard’s requirements for simulated furniture leg movement resistance.
Frequently Asked Questions
Q1: What is the typical service life of cushioned PVC flooring?
A: With proper installation and maintenance, domestic-class products (21-23) typically last 10-15 years, while commercial-class products (31-33) can last 7-12 years depending on traffic intensity.
A: With proper installation and maintenance, domestic-class products (21-23) typically last 10-15 years, while commercial-class products (31-33) can last 7-12 years depending on traffic intensity.
Q2: Can cushioned PVC flooring be installed over underfloor heating?
A: Yes, but the standard requires that the flooring be compatible with the heating system. The dimensional stability requirements ensure that the flooring will not excessively shrink or curl when exposed to elevated temperatures from underfloor heating.
A: Yes, but the standard requires that the flooring be compatible with the heating system. The dimensional stability requirements ensure that the flooring will not excessively shrink or curl when exposed to elevated temperatures from underfloor heating.
Q3: How does the amendment affect existing product certifications?
A: Products tested to the 2010 edition may need retesting for the updated requirements, particularly the replacement of the EN 424 furniture leg test with ISO 16581. Manufacturers should review their certification status.
A: Products tested to the 2010 edition may need retesting for the updated requirements, particularly the replacement of the EN 424 furniture leg test with ISO 16581. Manufacturers should review their certification status.
Q4: What distinguishes expanded PVC flooring from other resilient flooring types?
A: The key distinction is the expanded (foamed) intermediate layer that provides underfoot comfort and acoustic insulation. This differentiates it from homogeneous vinyl flooring, LVT (luxury vinyl tiles), and linoleum products.
A: The key distinction is the expanded (foamed) intermediate layer that provides underfoot comfort and acoustic insulation. This differentiates it from homogeneous vinyl flooring, LVT (luxury vinyl tiles), and linoleum products.
