What does this tool do?
Laminate is sold by the carton, with coverage printed on the box, while underlayment comes in rolls. This calculator adds cutting waste to the room area and returns both cartons and underlayment rolls.
The Formula
Cartons = ⌈Room area × (1 + Waste ÷ 100) ÷ Carton coverage⌉; Underlay rolls = ⌈Area ÷ Roll coverage⌉Frequently Asked Questions
How many cartons of laminate for 180 sq ft?
At 24.4 sq ft per carton and 10% waste you need about nine cartons.
Do I need underlayment everywhere?
Most floating floors need it, except products with attached padding. Check the manufacturer requirements for moisture and sound.