# ARDEX X 7 R S1

Tile adhesive · ARDEX

A 20 kg bag of ARDEX X 7 R S1 covers about 4.7 m², by ARDEX UK's own figure: “equivalent to approximately 4.7m² at 3mm bed thickness”. ARDEX UK's other figures are in the table below.
Source: ARDEX UK, ARDEX X 7 R S1 / X 7 R S1 W product data sheet, read 12 October 2026.

## The maker's figures

| Figure | The maker's words |
|---|---|
| about 4.7 m² per 20 kg bag | “equivalent to approximately 4.7m² at 3mm bed thickness” |
| about 1.4 kg a square metre for each mm of bed | “Material requirement is approximately 1.4kg 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-x-7-r-s1/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a 20 kg bag of ARDEX X 7 R S1 cover?** ARDEX UK states about 4.7 m² (“equivalent to approximately 4.7m² at 3mm bed thickness”), in its ARDEX X 7 R S1 / X 7 R S1 W product data sheet, read 12 October 2026. Nothing is added for waste.

**What sizes does ARDEX X 7 R S1 come in?** The catalogue lists 20 kg bag. A shop may not stock every size.

## Where the figures come from

- ARDEX UK, ARDEX X 7 R S1 / X 7 R S1 W product data sheet (https://ardex.co.uk/wp-content/uploads/2024/03/ARDEX-X-7-R-S1-Final-090124.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-x-7-r-s1/