Rugs are rarely damaged by being stored. They are damaged by being stored badly, and the failure modes are few enough to list.
1. Plastic
The most damaging, and the thing most people reach for first.
Plastic sheeting, bin bags and shrink wrap all trap moisture against the rug. Wool is hygroscopic — it takes up and gives off water with the surrounding air — and sealing it prevents that exchange. What follows is mildew, then dry rot in the foundation, then permanent discolouration.
A rug that goes into plastic slightly damp is a rug you will not get back.
Instead: breathable cotton sheeting or Tyvek. Both exclude dust and insects while letting moisture move. Wrap the rolled rug completely and tape the wrap to itself, not to the rug.
If a storage company offers to shrink-wrap it, decline
It is standard practice for furniture and wrong for textiles. Ask for breathable wrap, or wrap it yourself before it leaves. This is the single most common way a good rug is destroyed in professional storage.
2. Folding
Never fold a rug. Roll it.
A fold puts a hard crease through the foundation, and the warps and wefts along that line carry stress they were not built for. On an older rug they eventually crack and break. A rug folded for years may never lie flat again, and the damage is structural rather than cosmetic — rug repair.
Roll it pile-side out on anything with a pile. Rolling pile-in compresses the face against itself and crushes it; pile-out puts the pile on the outside of the curve where it has room. Roll along the length, evenly, without a tight core.
For a large or valuable rug, roll it around a tube — a cardboard or plastic core wrapped in acid-free paper — so the innermost turn is not creased by its own tightness.
3. Storing it dirty
Moths and carpet beetles are not drawn to clean wool. They are drawn to soiling, sweat, food residue and skin oils, and a soiled rug placed in a dark, undisturbed space is close to an invitation.
Have it professionally washed and fully dried before storage. Dry matters as much as clean: a rug rolled while still damp at the foundation will mildew regardless of how it is wrapped — rug cleaning and how much rug cleaning costs.
4. Storing it where the climate swings
Lofts, garages, basements and outbuildings are the usual culprits, and each fails differently.
Lofts cycle from very hot to very cold, and the repeated expansion and contraction stresses the foundation. Heat also accelerates dye degradation.
Garages are damp, and they are where insects live.
Basements are damp and often have unsealed concrete floors, which transmit moisture from below.
Anywhere on a concrete floor, even briefly, without a pallet or shelving between.
Instead: a cool, dry, stable interior space. A spare room is better than any of the above, and it costs nothing.
5. Storing it flat under weight
A rolled rug on the floor with boxes stacked on it develops permanent compression across the roll, and the crushing does not recover.
Store it horizontally on a shelf or raised rack, with nothing on top. Standing a rug on end sounds tidy and puts the whole weight on one edge, which distorts it.
6. Storing it and forgetting it
The mistake that turns a small problem into a total loss.
Unroll and inspect every six to twelve months. You are looking for moth activity — grazed patches, fine webbing, and a gritty residue like sand in the pile, usually in the areas nobody disturbs. An infestation caught at that stage is a vacuum and a freeze; one caught after two years is a reweaving bill or a ruined rug — moth damage.
Unrolling also relieves the set of the roll and lets the rug breathe.
Moth prevention that actually works
Cleanliness first. It does more than any deterrent.
Cedar and lavender are mild deterrents, not treatments. They will not stop an established infestation and should not be relied on. Cedar loses its volatile oils within a year or two unless sanded back.
Mothballs work and have costs. Naphthalene and paradichlorobenzene are effective and the smell permeates wool for a very long time. Use them knowing that.
Freezing kills all life stages — a rug sealed and held below about −18°C for two weeks, thawed, then repeated. This is the domestic treatment for an infestation already present.
Inspect on a schedule. Nothing substitutes for it.
The short version
Clean and fully dry. Roll, never fold, pile-side out, around a tube. Wrap in cotton or Tyvek, never plastic. Store cool, dry, stable, off the floor, nothing on top. Unroll and check twice a year.
Full method in rug storage, and the seasonal case for rotating rugs in and out of storage in seasonal rugs.
Common questions
Can you store a rug in plastic?
No — it is the most damaging storage mistake there is. Plastic traps moisture against the rug, and wool that cannot breathe develops mildew, dry rot and permanent discolouration. Use breathable cotton sheeting or Tyvek instead, which excludes dust and insects while letting moisture out.
Should you fold a rug for storage?
Never fold — roll. A fold puts a permanent crease through the foundation, and on an older rug the warps and wefts along that line eventually crack and break. A folded rug stored for years may not lie flat again, and the damage is structural rather than cosmetic.
Do you need to clean a rug before storing it?
Yes, and it is not optional for long storage. Moths and carpet beetles are attracted to soiling, sweat and food residue rather than to clean wool, so a soiled rug going into a dark undisturbed place is close to an invitation. Have it professionally washed and dried first.