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Cork flooring bathroom

Updated: 21 October 2026

Cork flooring bathroom advice on one retailer page does not cancel the ban on the next. A splashed floor beside a basin is a different brief from a walk-in shower or a room with a floor drain, and the core decides which you can ask about. The Products Compared editorial team checked UK supplier sheets and the three Treefloor listings in our [cork floor comparison](/hub/flooring/cork-floor). We did not flood a test room. A qualifying purchase can earn a commission at no extra cost to you. The conditional answer is a sealed pure-cork glue-down tile where that sheet allows a bathroom, and never inside a shower or a wet room.

Cork flooring bathroom advice on one retailer page does not cancel the ban on the next.

Our top picks

Treefloor Treefloor cork tiles, 20 pack

Best overall

Treefloor Treefloor cork tiles, 20 pack
8.8/10about £29.99
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Treefloor Treefloor cork tiles, 25 pack

Best value

Treefloor Treefloor cork tiles, 25 pack
8.4/10about £34.99
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Treefloor Treefloor cork tiles, 9 pack

Alternative

Treefloor Treefloor cork tiles, 9 pack
7.8/10about £19.99
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On this page
  1. 1.Bathroom floor or wet room
  2. 2.Why click cork is refused
  3. 3.Glue-down is not a blank cheque
  4. 4.What to do with a floor drain

Bathroom floor or wet room

You get splashes outside the tray. A walk-in shower or a wet room is where water is meant to sit and leave through a drain. Flooring by Nature allows sealed pure-cork glue-down outside the shower and refuses the enclosure and the wet room. Corka allows a bathroom with a site lacquer and excludes wet rooms. If you are still choosing the construction, start with the cork floor tiles buying guide. If water will sit, see cork or vinyl.

Why click cork is refused

Most click cork planks put a high-density fibreboard core between two cork layers. Fibreboard swells when water reaches a joint, and a floating floor has joints by design. Flooring by Nature and Corkfloor.co.uk keep that construction out of bathrooms. A 15-year line on an EarthTone-style plank does not change the core. Corka is the exception on its own sheet: The Colour Flooring Company says glue Corka click planks in bathrooms and shower rooms and seal the perimeter. That method does not transfer to a floating EarthTone Click or Montano floor.
Treefloor Treefloor cork tiles, 20 pack

Testsieger

Treefloor Treefloor cork tiles, 20 pack
8.8/10about £29.99
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Glue-down is not a blank cheque

Pure cork, stuck down, is only in play when the finish and the warranty both allow a bathroom. Unfinished cork drinks water until the maker’s own finish is on it, including at the edges. Natrul’s Naturals Standard is sold as class 23/33 and the warranty still excludes bathrooms and wet rooms. Class 33 under BS EN ISO 10874 is a traffic rating. The Treefloor tiles do not state bathroom use. They are 4 mm and unsealed, with bullets for floors, walls, and pin boards. Keep them out of the en-suite.

What to do with a floor drain

A floor drain means the room is built to hold water. Corka excludes permanently wet areas. Flooring by Nature excludes the shower and the wet room even where it allows sealed glue-down on the rest of the bathroom floor. Flooring Hut is more optimistic, and that conflicts with the shower ban. Follow the tighter sheet. Ceramic or stone on a tanking system is the usual answer for that zone. Keep cork, if you still want it, in the dry rooms.

Common questions

Can cork go in a bathroom?
It can, as a sealed pure-cork glue-down tile, and only when that product’s sheet and warranty allow a bathroom floor outside the shower. Floating click cork with a fibreboard core is the construction UK suppliers in these sheets refuse. A wet room or a shower that drains through the floor is a no across the tighter sheets. The Treefloor peel-and-stick tiles do not state bathroom use, so they are not the tile that satisfies the condition.
Is pure cork the same as waterproof?
Pure cork has no fibreboard core, which removes one failure. It is not a waterproof membrane. Unsealed cork absorbs water, and a finish only protects the face you actually coated. Natrul describes its cork as moisture-resistant in contrast with a wet-area vinyl, and its class 23/33 tile still excludes bathrooms from the warranty. Sealed glue-down can be fit for splashes where the warranty agrees. It is not a material you tank a shower with.
Can I put cork inside a walk-in shower or a wet room?
No, on the sheets this page relies on. Flooring by Nature refuses the shower enclosure and the wet room. Corka excludes permanently wet areas. A floor drain means water is meant to stand and then leave. Put a specified tiled or stone floor on a tanking system in that zone. Cork, if a particular glue-down warranty allows it, stays on the bathroom floor outside that zone.
Do I have to glue a click plank down if the brand says so?
Only if that brand’s sheet says so for that plank. Colour Flooring’s Corka FAQ is the example: glue the click planks in bathrooms and shower rooms, and seal the perimeter. EarthTone Click and the other floating HDF floors in these sheets say the opposite: they are dry-room floors, and bathrooms are out. Gluing a float-only plank because Corka does it voids the logic of both instructions. Match the method to the leaflet in the box you opened.
Will a class 33 rating approve a bathroom?
Class 33 under BS EN ISO 10874 rates heavy commercial traffic. It says nothing about standing water. Natrul’s Naturals Standard is the illustration: class 23/33 on the tile, bathrooms and wet rooms excluded from the warranty. A listing that never prints a class, including the Treefloor packs, has not given you class 33 either. Ask for the warranty wording for the room, and treat a missing line as a no.
Can I use the Treefloor self-adhesive tiles in a bathroom?
The amazon.co.uk listings in this comparison do not state bathroom use. The tiles are 4 mm and unsealed on the maker’s page, with bullets that include pin boards as well as floors. Nothing in the review file we used shows a successful wet room. Keep them for a dry trial, a wall, or a pin board. For a bathroom floor, price a pure-cork glue-down tile whose warranty names that room, and keep the shower itself in tile or stone.

Related pages

How to lay cork floor tiles

Cork floor

Best cork flooring UK: the pick and who should skip

Cork floor tiles: glue-down, click, or peel-and-stick

Cork vs vinyl flooring: warmth, quiet and standing water

Sources

Public UK standards, fitting guidance and the maker's page. Prices and the star line are amazon.co.uk listing figures from 19 October 2026, not a live-price promise.

  1. BS EN 12104:2023 cork floor tiles (retrieved 19 October 2026)
  2. BS EN ISO 10874 floor covering classification (retrieved 19 October 2026)
  3. BS 8203:2017 installation of resilient floor coverings (retrieved 19 October 2026)
  4. Bostik Profloor moisture tests (retrieved 19 October 2026)
  5. Approved Document E (retrieved 19 October 2026)
  6. Consumer Rights Act 2015 (retrieved 19 October 2026)
  7. Treefloor self-adhesive cork tiles (retrieved 19 October 2026)
  8. CountryLife cork flooring guide (retrieved 19 October 2026)