How to Flatten a Rug: Simple Fixes for Curling Edges and Stubborn Creases

You've unrolled your new rug and it's got a mind of its own, corners curling up, a ridge running down the middle, edges that won't lie flat. It's frustrating, especially when the rest of the room looks great. The good news is it's almost always fixable, and usually without much effort.

Here's what's actually going on and what to do about it.

Why Rugs Curl and Crease in the First Place

Most rugs arrive rolled or folded, which means the fibres and backing have been held in a compressed position for days or weeks during shipping. Natural fibres like wool and jute tend to hold their shape more stubbornly than synthetics, but almost any rug will need some time to relax after unpacking.

Older rugs curl for different reasons, usually because the backing has dried out or because the rug has been rolled up in storage. Rugs placed against walls or under furniture can develop permanent folds if left for too long.

The Simplest Fix: Time and Weight

For most rugs, patience is the first and most effective solution. Unroll the rug, lay it flat, and place heavy objects, books, furniture, boxes, on the curling corners and along any raised ridges. Leave it for 24–48 hours.

This works surprisingly well for lighter synthetic rugs, and it's completely risk-free. If the curling is mild, this might be all you need.

Reversing the Roll

If the rug arrived rolled in one direction, try rolling it the opposite way and leaving it for a few hours. This counteracts the memory the fibres have built up from being stored.

Roll it tightly, tie with string or a rubber band to hold the shape, and leave it for two to three hours. When you unroll it again, it should lie much flatter.

Using Heat to Relax Stubborn Creases

Gentle heat can speed up the process for synthetic and polypropylene rugs. A hairdryer or heat gun set to low, held a few centimetres above the crease, allows the fibres to relax. Work slowly and keep moving, don't hold heat in one spot.

While the area is warm and slightly pliable, press it down firmly with your hands or place a heavy flat object on top while it cools. The shape will set as it cools down.

Important: Don't use this method on natural fibre rugs like jute, sisal, or wool, and be very careful with delicate flatweaves. Heat can cause irreversible damage to some materials. When in doubt, skip this step.

The Damp Towel Method

For wool and natural fibre rugs, moisture works better than heat. Lay a damp (not soaking) white towel over the problem area, then press firmly with your hands. The fibres absorb a little moisture and become temporarily more flexible.

Remove the towel and immediately place something heavy and flat over the area. Leave it until the rug is completely dry, usually a few hours. This is one of the most effective methods for wool rugs and carries very little risk if you keep the towel only slightly damp.

Dealing with Curling Corners

Corners are the most common problem area, and they're also where a rug becomes a trip hazard. A few approaches that work well:

• Rug tape or corner grippers, double-sided tape designed specifically for rugs is widely available online and in UK flooring shops; apply to the underside of the corner and press firmly onto the floor
• A rug pad, a non-slip pad underneath the whole rug does two things at once: it stops the rug moving and holds corners down naturally; this is probably the best long-term solution
• Heavy furniture, simply placing the leg of a chair or table on a curling corner for a day or two usually sorts it permanently

Preventing Future Curling

The best thing you can do to prevent a rug from curling is to use a quality rug pad. A good pad grips both the floor and the rug, eliminating the movement that causes edges to lift over time. It also protects the underside of the rug and adds a bit of cushioning underfoot.

When storing a rug, always roll it rather than fold it. Rolling applies even pressure; folding creates sharp creases that become harder to remove the longer the rug is left. Store rolled rugs in a dry place, ideally wrapped in breathable fabric to prevent dust and moisture from settling in.

If you're shopping for a new rug and want something that stays flat and doesn't require much fuss, our collection includes a range of flatweave and low-pile options that tend to behave much better straight out of the packaging.

When Flattening Isn't Enough

Very occasionally a rug simply won't flatten, usually because the backing has warped, or because the rug has been folded for too long and the damage is structural. In these cases, professional rug cleaning and blocking (a technique used to restore the shape of a rug) may help. It's worth consulting a specialist before writing the rug off entirely, particularly if it's a quality piece.

For most rugs, though, a combination of time, weight, and a small amount of targeted heat or moisture will have it lying flat within a day or two. It's rarely as complicated as it seems at first.