How to stop rug corners curling

By Emma Whitfield · Published 11 October 2026

Most curled corners are "roll memory" from shipping or storage, and they flatten with reverse rolling and weight over a few days. Add gentle damp heat only where the fibre can take it, then hold the result with grippers or a pad. A curl that keeps returning along a whole edge after all that may be a construction problem, which is a matter for the retailer rather than for your iron.

Why rug corners curl

Step by step: flatten a curled corner

  1. Reverse roll. Roll the curled end tightly in the opposite direction to the curl, secure it with string or rubber bands and leave it. SisalRugs.com gives 24 to 48 hours; repeat for a stubborn corner.
  2. Weigh it down. Lay the rug flat and put books or furniture on the corner with even pressure. Rug Love says a minimum of three days usually does it; SisalRugs.com allows up to two weeks. For a permanent fix, place a sofa, sideboard or table leg over the problem corner.
  3. Add gentle damp heat, only if the fibre allows it. See the table below. Always use a towel between any heat source and the rug, and never soak it.
  4. Hold the corner. Once flat, fit corner grippers (hard floors only) or a correctly sized rug pad so the edge has something to sit on. Our rug pad guide covers which pad suits which floor.

Heat and moisture by material

Rug fibreWhat you can doWhat to avoid
WoolLightly moisten the back of the corner, press flat and weigh it while it dries. An iron on a low to medium setting over a damp towel is the last resort (SisalRugs.com, Rug Love).The iron directly on the pile. Over-wetting.
Jute, sisalDampen the curled area lightly and weigh it down evenly overnight; repeat if needed (SisalRugs.com).Saturating the fibre. Suction grippers, which the Vacuum Tech listing says do not suit jute-backed rugs.
Polypropylene, polyesterReverse roll and weight. If you want heat, a hairdryer on low, then weight for a few hours (Rug Love).The iron. Polypropylene melts at around 160 to 166 °C, and household irons run from about 121 to 182 °C, so the hotter settings can melt the fibre.

Not sure what the rug is made of? Check the label or the listing's material field, not the title: a listing can say "jute" in the title and mean the colour. Our wool vs polypropylene comparison explains how the two behave.

Corner grippers for hard floors

For a rug on wood, laminate or tile once the corner is already flat. Not for carpet.

  1. Vacuum Tech rug pad grippers (corner and edge)

    Pack of 4 squares, 9.9 × 9.9 cm. The listing says they fix under the rug and grip hard, smooth floors only, and are not suitable for carpet or for rubber-backed, jute or fluff-backed rugs.

    Vacuum Tech rug pad grippers (corner and edge): see the price on Amazon.co.uk

Affiliate links: as an Amazon Associate we earn from qualifying purchases. Prices are set by Amazon and change often.

When curling means a fault

Give the rug a full cycle first: reverse roll, then a week under weight. If the curl comes straight back, and especially if it runs along a whole side rather than one corner, the cause is more likely in the backing than in the packaging.

Two things to know before you complain. First, some manufacturers exclude curl from their warranty: Shaw's Tuftex area rug warranty, for example, states that roll marks and edge curl are not defects. Second, your statutory rights are with the retailer, not the manufacturer. Which? explains that you have 30 days from taking ownership to reject faulty goods for a refund, and after that the retailer gets one chance to repair or replace. Whether a persistent curl counts as a fault is a judgement, so take photographs of the edge flat on the floor, note what you tried and for how long, and write to the retailer's customer service.

Mistakes to avoid

Frequently asked questions

How long does it take for a new rug to lie flat?

Reverse rolling usually takes 24 to 48 hours. Weights work more slowly: Rug Love suggests a minimum of three days under weight, and SisalRugs.com gives anything from several hours to two weeks depending on how hard the curl is.

Can I iron a polypropylene rug flat?

Avoid it. Polypropylene melts at around 160 to 166 °C, and household irons run between roughly 121 and 182 °C, so the top settings can exceed the melting point of the fibre. Use reverse rolling and weight, or a hairdryer on a low setting, instead.

Do corner grippers work on carpet or on a jute rug?

Not the suction type. The Vacuum Tech listing says its grippers hold on hard, smooth floors only and are not suitable for carpet or for rubber-backed, jute or fluff-backed rugs. On carpet you need an underlay made to grip carpet; on jute, use weight and a rug pad.

Is a curling rug faulty?

Usually not. Most curls come from the rug being rolled for shipping or storage, and some manufacturer warranties state that edge curl is not a defect. If a curl keeps coming back after reverse rolling and a week under weight, photograph it and contact the retailer: within 30 days of taking ownership you can reject faulty goods for a refund.

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