Adhesive & Glue Calculator

Tubes, cartridges, tubs, or cans needed - coverage rates auto-set by product type, adjustable per job.

Adhesive / product type

Product settings

Coverage per unit (m² / tub) Adjust to match manufacturer data.

Coats / passes

Waste allowance (%) 10% typical; more for irregular shapes.

Pack sizes available

Cost per unit ()

Labour per m² ()

Total area
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m²

Units needed
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inc. waste

Areas calculated

surfaces

Surface / area	Area (m²)	Units needed	Units to buy	Pack

Coverage varies widely by substrate porosity, notch trowel size, and application method. Always check the manufacturer's datasheet.

Larger notches use more adhesive. Back-butter large format tiles for full coverage.

Tile adhesive - use the right adhesive for the substrate (flexible for wet rooms and underfloor heating).
Grab adhesive - apply in zig-zag beads, press and hold for 30-60 seconds. Use temporary support while curing.
Expanding foam - fill gaps to 50% only; foam expands to fill the rest. Trim flush once cured.
Silicone - clean surfaces with IPA before applying. Mask edges for a clean line.
Contact cement - apply to both surfaces, allow to go tacky, then press together firmly.
Wood glue - clamp joints for at least 30-60 mins. Full cure 24 hours.
Always allow 10-15% extra for waste, cut edges, and difficult areas.