Question 1

How much extra flooring should I buy for waste?

Accepted Answer

Plan 10% extra for a simple rectangular room, and 15% if the space has many cuts, a diagonal layout, or an irregular shape. That margin covers mistakes and lets you replace a damaged plank later from the same dye lot — a later batch often won't match.

Question 2

Do I need underlayment?

Accepted Answer

For laminate and many vinyl planks, underlayment cushions sound, smooth minor subfloor flaws and adds a moisture barrier. Some products come pre-attached; if yours doesn't, budget for it separately — it's a real per-square-foot cost, not optional padding.

Question 3

Square feet vs square metres?

Accepted Answer

This calculator uses feet (1 metre ≈ 3.28 ft, so 1 sq m ≈ 10.76 sq ft). If your room is measured in metres, convert the length and width first, or multiply your square-metre total by 10.76 to get the square feet to enter here.

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