How much grout per square metre

Using fairly large tiles and thin gaps, but most guides seem vague. Can anyone help me out?

Asked by Kamil on 3rd Feb 2026
Expert Trade Answers
"wall per 15 kg tub with 6 mm bed 4/6 square metres if floor and ten mm bed 4 square metres per 10 kg ag.
regards.
steve"
Answered on 12th Mar 2026 - Member since Aug 2025 - report
"Could you let me know the m2 of the job tile size and weather its a 2mm 3mm 5mm grout joint please then i would be able to tell you ."
Answered on 3rd Feb 2026 - Member since Jan 2021 - report
"Grout quantity per m² varies based on tile size, joint width, and tile thickness.
With large format tiles installed with narrow joints (typically 2–3 mm), grout consumption is generally low — normally around 0.2–0.4 kg per m². Medium tiles or wider joints will require more, and mosaics significantly more due to the higher number of joints.
If you let me know the tile dimensions and planned joint gap, I can give you a precise estimate.
It’s always good practice to allow a small margin to ensure continuity during installation."
Answered on 3rd Feb 2026 - Member since Feb 2019 - report
"Consumption depends on the thickness of the tile and the thickness of the joint: 2, 3 or 5 mm."
Answered on 3rd Feb 2026 - Member since Jan 2025 - report
"Depends on size of tiles if there going on the floor or walls . Weather they need back buttering ect"
Answered on 3rd Feb 2026 - Member since Oct 2025 - report
"Hi I can't give you a square metorage price until I've seen the job and how long it's going to take me, every job is different and anyone gives you a per square metre price you are probably going to pay over the odds as they are going to cover their backs just in case the job is a old one i charge under sixty pounds a day most tiles or £200+"
Answered on 3rd Feb 2026 - Member since Nov 2023 - report
"If yo look on the back of the bag it will tell you how far the bag will go depended on tile size and depth of joint and width sometimes its better to over buy within reason especially if you a diyer"
Answered on 3rd Feb 2026 - Member since Feb 2023 - report
"Cost can range from £15 to £40 per sqm. Depending on the comlexity of the job"
Answered on 8th Feb 2026 - Member since Feb 2024 - report
"Mapei 5kg grout should do whole bathroom 20m with tiles 600x300 with 3mm spacers"
Answered on 3rd Feb 2026 - Member since May 2025 - report
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