# ARDEX-FLEX FL

Tile grout · ARDEX

A 10 kg bag of ARDEX-FLEX FL covers up to 17 m², by ARDEX UK's own figure: “thus one 10kg bag of ARDEX- FLEX FL will grout up to 17m² of tiling”. ARDEX UK's other figures are in the table below.
Source: ARDEX UK, ARDEX-FLEX FL product data sheet, read 12 October 2026.

## The maker's figures

| Figure | The maker's words |
|---|---|
| up to 17 m² per 10 kg bag | “thus one 10kg bag of ARDEX- FLEX FL will grout up to 17m² of tiling” |
| 0.58 kg a square metre | “Example Tiles 150mm x 150mm x 5mm; joints of 5mm:300 x 5 x 5 x 1.75 ÷ 150 ÷ 150 = 0.58kg/m²” |
- 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.

## What one bag covers at the maker's rate

| Rate | A 2.5 kg bag | A 5 kg bag | A 10 kg bag |
|---|---|---|---|
| 0.58 kg/m² (“Example Tiles 150mm x 150mm x 5mm; joints of 5mm:300 x 5 x 5 x 1.75 ÷ 150 ÷ 150 = 0.58kg/m²”) | 4.3 m² | 8.6 m² | 17.2 m² |

Arithmetic on the maker's figure: the bag's kilograms divided by a rate a square metre, or times an area a kilogram, with nothing added for waste.

## Sizes

2.5 kg, 5 kg and 10 kg bags

## 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-flex-fl/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a 10 kg bag of ARDEX-FLEX FL cover?** ARDEX UK states up to 17 m² (“thus one 10kg bag of ARDEX- FLEX FL will grout up to 17m² of tiling”), in its ARDEX-FLEX FL product data sheet, read 12 October 2026. Nothing is added for waste.

**How much ARDEX-FLEX FL per square metre?** ARDEX UK states 0.58 kg a square metre (“Example Tiles 150mm x 150mm x 5mm; joints of 5mm:300 x 5 x 5 x 1.75 ÷ 150 ÷ 150 = 0.58kg/m²”).

**What sizes does ARDEX-FLEX FL come in?** The catalogue lists 2.5 kg, 5 kg and 10 kg bags. A shop may not stock every size.

## Where the figures come from

- ARDEX UK, ARDEX-FLEX FL product data sheet (https://ardex.co.uk/wp-content/uploads/2017/05/ARDEX-FLEX-FL-1.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-flex-fl/