Estimates the amount of floor underlayment material needed.
The underlay calculator works out how many rolls you need to lay under laminate or engineered flooring, based on the room area.
Rolls = ⌈area × 1.1 / (roll width × roll length)⌉ A standard roll is 1.0 × 15 m = 15 m².
30 m², 10% waste, 1.0 × 15 m rolls. Area with waste: 33 m². Rolls: ⌈33 / 15⌉ = 3.
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