Guides
Short instructions: from room dimensions to a shopping list. Every step links to the calculator that does the maths.
How much paint for a room
Wall and ceiling area, openings deducted, converted into whole tins with an allowance for the second coat.
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Tiles and adhesive for a bathroom
Floor and walls in square metres, an allowance for cuts, adhesive and grout converted into bags.
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How many floor panels
Floor area, an allowance for cuts and a conversion into whole packs.
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Stud partition: profiles and boards
How many CW and UW profiles, how many plasterboards and how much mineral wool for a wall of a given size.
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How much tile adhesive
Adhesive use follows the notched trowel, and the trowel follows the tile format. Then the grout, and the tiles themselves with an off-cut allowance.
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How much skim coat for a wall
Skim coat is counted in kilograms per square metre per millimetre of layer. Two thin layers rather than one thick one.
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Insulating a house with EPS
An ETICS system is not just the foam: it is the adhesive, the dowels, the mesh, the reinforcing layer and the render. Every one of them comes off the same area.
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Cutting a furniture board with less waste
How many boards to buy for a list of parts, and how to lay them out so the off-cut is as small as possible. The saw's kerf takes material too.
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The same formula in the app LiczMat for Android uses the same engine offline — with the material catalogue and results saved into a project. Download