Vinyl flooring
Homogeneous vs heterogeneous vinyl: which for a hospital?
Published 6 min read
Both are PVC sheet floors, and both can be heat-welded into a seamless surface. The difference is how they are built, and that decides where each one belongs.
Here is a plain comparison, so you can specify the right floor for each room instead of one floor for the whole building.
How they are built
Homogeneous vinyl has one composition through its full thickness, so the colour and pattern run all the way down. It is specified under ISO 10581 and is supplied as roll or tile.
Heterogeneous vinyl is layered: a clear wear layer over a printed decor film, on a carrier and backing. It is specified under ISO 10582 and is supplied as roll, tile or plank. The print gives it a much wider range of designs.
How the two are built
- PUR surfaceantibacterial, easy-clean
- Homogeneous PVC bodysame composition through the full depth
- Backingstable base
Illustration, not to exact scale.
- Clear wear layerPUR treated
- Printed decor filmpattern and colour
- Fibre-glass carrierdimensional stability
- Backingfoam or PVC
Illustration, not to exact scale.
Side by side
| Homogeneous | Heterogeneous | |
|---|---|---|
| Pattern | Through the full thickness | Printed film under a wear layer |
| Typical thickness | 2.0 mm or 3.0 mm | Varies by product and wear layer |
| Designs | Solid, speckled, marbled | Wide range of printed patterns |
| Static control | Available (anti-static and conductive grades) | Normally not designed for it |
| Typical rooms | Theatres, ICU, labs, pharma, heavy corridors | Wards, waiting areas, paediatrics, offices |
Typical values for guidance. Final specification is confirmed per project.
Choosing by room
Operating theatres and ICU
Homogeneous. Seamless, heat-welded and coved, with a surface that tolerates repeated disinfection.
Pharma and clean zones
Homogeneous, in an anti-static grade, where electronics or solvents are present.
Corridors with trolley traffic
Homogeneous 3.0 mm for constant heavy rolling loads; 2.0 mm for regular foot traffic.
Wards, waiting and paediatric areas
Heterogeneous when pattern and colour matter; homogeneous if the area is also hard-working.
What the standards do and do not cover
Both standards classify products by intensity of use under ISO 10874, which is the main way to match a floor to expected traffic. Hospital specifications usually add requirements the product standards do not set: slip resistance, static control, and resistance to disinfectants. Always read the project specification as well as the product data sheet.
Common specifying mistakes
Choosing by appearance alone
A floor that suits a ward may not suit a theatre. Decide by room use first, then pick the design.
Ignoring the substrate
Moisture and an uneven slab cause failures. A moisture check and levelling screed come before any vinyl.
Leaving seams unwelded
In clinical areas, seams should be heat-welded and the sheet coved up the wall for a continuous surface.
Frequently asked questions
Is homogeneous vinyl always better than heterogeneous?
No. It is the better choice for the most demanding clinical and pharma areas. For wards and public areas, heterogeneous vinyl is a sound choice and offers more design freedom.
Can the two be used in the same building?
Yes, and it is common. Specify by room: homogeneous in theatres, ICU and labs, heterogeneous in wards and waiting areas.
Do I need anti-static vinyl?
Where electronic equipment, instruments or flammable solvents are present, such as pharma zones and labs. Wards usually do not need it.
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