# Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag)

Tile adhesive · Larsen

Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) takes about 4 kg a square metre, by Larsen Building Products' own figure: “COVERAGE Approx 4 kg/m2 @ 3 mm bed”.
Source: Larsen Building Products, Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) technical data sheet, read 12 October 2026.

What it is for, in the maker's words: “Larsen FIBERFLEX™ Professional Semi-Rapid Set+ is a fully flexible, S1-rated, microfibre reinforced, non-slip, cement-based adhesive” (Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) technical data sheet, read 12 October 2026).

## The maker's figures

| Figure | The maker's words |
|---|---|
| about 4 kg a square metre | “COVERAGE Approx 4 kg/m2 @ 3 mm bed” |
- 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 20 kg bag |
|---|---|
| about 4 kg/m² (“COVERAGE Approx 4 kg/m2 @ 3 mm bed”) | about 5 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

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/larsen-fiberflex-semi-rapid-set-pro-pink-bag/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a 20 kg bag of Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) cover?** Larsen Building Products gives a rate a square metre, not an area a bag. At its rates a 20 kg bag covers about 5 m² (“COVERAGE Approx 4 kg/m2 @ 3 mm bed”): the bag's kilograms divided by the rate, with nothing added for waste.

**How much Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) per square metre?** Larsen Building Products states about 4 kg a square metre (“COVERAGE Approx 4 kg/m2 @ 3 mm bed”).

**What is Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) for?** Larsen Building Products says: “Larsen FIBERFLEX™ Professional Semi-Rapid Set+ is a fully flexible, S1-rated, microfibre reinforced, non-slip, cement-based adhesive” (Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) technical data sheet, read 12 October 2026).

**What sizes does Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) come in?** The catalogue lists 20 kg bag. A shop may not stock every size.

## Where the figures come from

- Larsen Building Products, Larsen FiberFlex™ Semi-Rapid Set+ (Pro Pink Bag) technical data sheet (https://larsenbuildingproducts.com/?jet_download=29f0c8e2d003ba42ff8d555bc0ea91bb3e4f8463): coverage and what it is for, 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/larsen-fiberflex-semi-rapid-set-pro-pink-bag/