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How to Measure

Measuring Your Rooms
for New Flooring

You don't need to be exact — just careful. Follow these simple steps to get a good square-metre estimate for a rough price over the phone. When you're ready to go ahead, we'll pop out and check-measure properly, free of charge, before any final quote.

Before you start

You'll need

  • A tape measure (a 5m or 8m one is ideal) — or a laser measure if you have one.
  • A pen and paper to sketch each room and jot the numbers down.
  • A second pair of hands helps for longer walls, but isn't essential.

A few golden rules

  • Work in metres (e.g. 3.6 m, not 3 m 60 cm) — it makes the maths easy.
  • Measure the longest and widest points of the room, wall to wall.
  • Round up to the nearest 10 cm — never round down.
  • Don't subtract for chimney breasts, kitchen units or small obstacles. Measure as if the room were a full rectangle.
  • Measure into doorways, bay windows and alcoves — flooring usually runs into these.
1

A simple rectangular room

Most rooms are basically a rectangle. Measure the length (the longest wall) and the width (the shortest wall), then multiply them together.

Floor length × width = m² Length — e.g. 4.8 m Width — e.g. 3.6 m Go a few cm past the door

Put the longer measurement on the long wall and the shorter one on the short wall — and carry your tape a few centimetres past any doorway. Here: 4.8 m × 3.6 m.

4.8 m × 3.6 m = 17.28 m²

That's your floor area. We'll add a little for wastage later (see Step 4).

2

An L-shaped room (carpet or vinyl)

Carpet and sheet vinyl come off a roll in one piece at a fixed width, so you can't split an L-shape and join it without waste. Don't break it into pieces — instead measure the full length (the longest wall) and the full width (the widest part), as if the room were one big rectangle that boxes the whole shape in. Carry your tape a few centimetres over each door threshold too.

offcut (unavoidable) Floor Length — 5.0 m Width — 3.4 m Go a few cm past the door

Measure the whole room as one rectangle — length × width — and carry your tape a few centimetres past any doorway. The small offcut in the corner is normal and unavoidable with roll goods.

Length 5.0 m × width 3.4 m = 17.0 m²
Having laminate, LVT or engineered wood? These are laid plank by plank and the measuring is more involved (and easier to get wrong), so don't worry about working it out yourself — we'll come out and measure it for you, free of charge.
3

Bay windows, alcoves & chimney breasts

These trip people up, so the rule is simple: add the bits that stick out (bays and alcoves, because flooring goes into them), and don't subtract the bits that stick in (chimney breasts), because the flooring is cut around them from the full width.

Bay — ADD Chimney — don't subtract Main floor measure full width Length — into the bay, to the wall Go a few cm past the door

The bay is part of the floor, so measure into it. The chimney breast sticks in, but don't subtract it — measure the full length straight to the wall beside it. And carry your tape a few centimetres past the doorway.

Why not subtract the chimney breast? Carpet and vinyl are cut to the full width of the room and trimmed around the chimney breast on site. If you deduct it, you'll come up short. The same goes for kitchen units — measure the full floor as if they weren't there.
4

Add a little for wastage

Flooring comes in fixed widths (often 4 m or 5 m for carpet and vinyl), and there's always some trimming and matching, so the amount actually needed is a bit more than the bare floor area. As a rule of thumb, add about 10% to your total for a realistic estimate.

Floor area × 1.10 = rough amount to allow for

Patterned floors, planks laid in a certain direction, and rooms wider than the roll can need more — that's one of the things we double-check at the free measure, so you never pay for more than you need.

Want the detail? Our in-depth article has a full wastage table by flooring type and roll-width tips →

Got your measurements?

Pop them into our quote builder or give us a ring for a rough price. Then we'll arrange a free check-measure and a written supply-and-fit quote — no obligation.