# ARDEX S 27 W

Tile adhesive · ARDEX

A 20 kg bag of ARDEX S 27 W covers about 6.4 m², by ARDEX UK's own figure: “Approximately 6.4m 2 at 3mm thick per 20kg bag”. ARDEX UK's other figures are in the table below.
Source: ARDEX UK, ARDEX S 27 W product page, read 12 October 2026.

## The maker's figures

| Figure | The maker's words |
|---|---|
| about 6.4 m² per 20 kg bag | “Approximately 6.4m 2 at 3mm thick per 20kg bag” |
| about 1 kg a square metre for each mm of bed | “approximately 1kg of powder per m2 per mm” |
- The conditions the maker names: Each figure is for the notch, bed, tile or joint the maker names beside it. An uneven surface, a larger notch or buttering the backs of the tiles takes more.
- Waste: None of these figures adds anything for what is left in the bucket or spilt.

## Sizes

20 kg bag

## Where to buy it

The page has the shops' own searches for it, and any link there that is paid for is marked Ad: https://buildbatch.co.uk/products/ardex-s-27-w/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a 20 kg bag of ARDEX S 27 W cover?** ARDEX UK states about 6.4 m² (“Approximately 6.4m 2 at 3mm thick per 20kg bag”), in its ARDEX S 27 W product page, read 12 October 2026. Nothing is added for waste.

**What sizes does ARDEX S 27 W come in?** The catalogue lists 20 kg bag. A shop may not stock every size.

## Where the figures come from

- ARDEX UK, ARDEX S 27 W product page (https://ardex.co.uk/product/ardex-s-27/): coverage, read 12 October 2026.
- ARDEX UK, ARDEX S 27 W product data sheet (https://ardex.co.uk/wp-content/uploads/2019/02/ARDEX-S-27-Datasheet.pdf): coverage, read 12 October 2026.

Written with AI tools; not yet checked by a tradesperson. Follow the bag's own instructions.

The page: https://buildbatch.co.uk/products/ardex-s-27-w/