Five Measurements to Take Before You Order a Rug

Four minutes with a tape measure removes almost every expensive mistake in rug buying. These five are the ones that matter, in the order worth doing them.

1. The room, at floor level

Measure length and width along the longest unbroken run of floor. Measure to the wall, not to the skirting board — skirting eats an inch or two per wall, which is the difference between a rug that sits inside the room and one that rides up onto the trim.

Write down both numbers. You will use them roughly twice: once to establish the ceiling on rug size, and once to sanity-check the size the retailer suggests.

2. Every piece of furniture that will sit on it

This is the measurement people skip, and it is the one that decides whether a rug looks chosen. For each sofa, armchair or table, note two things: its footprint, and how far it stands from the walls.

The convention worth following: front legs on the rug, back legs off. A rug that slides fully under a sofa makes the furniture look installed rather than placed. A rug that stops short of the front legs disconnects it.

3. The door swing

Open every door whose arc crosses the rug’s footprint. Check two things: whether the door catches on the pile, and whether the doorstop lands on the rug edge hard enough to shift it.

This is invisible on a product page and obvious the day the rug arrives. A rug that blocks the door to a garden or a balcony gets worked around daily, and eventually ends up folded in a corner.

4. The floor type

The floor determines the underlay specification more than it determines the rug.

• Hardwood or engineered wood: needs a pad with grip and enough thickness to protect the finish. Very dense wool pile can also mark soft wood under heavy furniture legs.
• Concrete or stone: the pad can be thinner; moisture is usually not an issue, but a hard floor transmits furniture indentations more readily.
• Slab or subfloor: check for moisture before committing to a natural fibre. Jute and sisal backs are vulnerable.

5. The route from the door to the rug

A rug that has to be moved to clean under it will get moved to clean under it, which means it ends up slightly wrong every time. If the delivery path includes a turn or a doorway narrower than the rolled rug, measure the diagonal of the tightest corner too.

Rolled rugs are usually delivered at 8 ft width. A standard interior door is 32 inches. If the rug is wider than the door, it goes in through the door on its side, and you find out whether the hallway allows that at delivery rather than before.

What to do with the numbers

Write all five down before you open a single product page — the tape-measure list is only the first half of a rug decision. The discipline matters more than the precision: a room measured once and recorded will stop you buying a rug that is right on paper and wrong in the space, and the mismatch is obvious to everyone except the person who ordered it.

Once you have them, the size decision follows fairly directly — the next question is usually material, and what each specification term on a label actually means is covered in the rug vocabulary.