Mold and mildew
Mold and mildew rug remediation.
Rugs that have spent time in a damp basement, a flooded room or a closed-up storage unit often come out smelling musty, spotted or stiff. Mildew on the surface can usually be treated. Mold that has worked into the foundation for weeks is more serious, and sometimes a rug cannot be saved. We assess each piece honestly before recommending anything.
Basements, storage and flood aftermath.
Where it starts
Mold needs moisture, warmth and something to feed on, and a wool rug on a damp floor offers all three. The most common cases we see are rugs stored rolled in basements, rugs laid on concrete slabs, pieces wrapped in plastic for a move and forgotten, and rugs that were not dried properly after a leak or flood.
The first signs are a musty smell, grey or white bloom on the back, and dark spotting that does not brush away. In later stages the foundation feels stiff or crunchy, and cotton warps and wefts can begin to rot, a condition known as dry rot, which leaves the rug brittle even once it is dry.
Musty smell
Often the first sign, especially on damp days.
Bloom on the back
Grey, white or green growth.
Dark spotting
Staining that does not brush away.
Stiff foundation
A sign of rot in cotton warps and wefts.
How we treat a moldy rug.
The work
Each rug is inspected front and back and the foundation is tested for strength, because that decides what treatment it can take. Colors are tested for stability. Loose growth is removed from the back outdoors or under extraction, so spores are not spread through the studio.
The rug is then washed by full immersion with a treatment suited to the fiber and dyes, rinsed thoroughly, and, most importantly, dried quickly and flat under controlled airflow. Slow drying is what allowed the mold to grow in the first place. Once dry, weakened areas are stabilized and staining assessed; some lifts with washing, some is permanent.
After treatment, we advise on where the rug should live. A rug that grew mold on a basement floor will grow it again if it goes back to the same place, so we suggest a breathable pad, storage off the floor, and rolling rather than folding, wrapped in cotton or Tyvek instead of plastic.
For rugs damaged in a flood, see our water damage restoration page, which also covers documentation for insurance claims.
A health note, and when a rug is unsalvageable.
Health and limits
Mold spores can aggravate allergies and asthma. If anyone in the household is sensitive, handle an affected rug as little as possible, wear a mask and gloves if you must move it, and keep it out of living spaces until it has been treated. We are rug specialists, not medical or environmental professionals; for mold in the house itself, consult a qualified remediation service.
A rug is unsalvageable when rot has taken the strength out of the foundation across a large area, so that it tears when handled, or when contamination from sewage or long standing water cannot be washed out safely. In those cases we will tell you plainly, and provide a written report if an insurer needs one.
What to send us.
What to send us
Send photographs of the whole rug front and back, close-ups of any spotting or growth, and tell us where it was kept, for how long, and whether it was ever wet. If you can, gently flex a corner and tell us whether it bends softly or feels stiff or cracks.
Timelines and pricing.
Timelines and pricing
Mold and mildew treatment is quoted after assessment, because the condition of the foundation decides what is possible; our pricing page explains how figures are reached. Workshop rug cleaning takes about two weeks on average; every rug is different, and any repairs needed will extend that time. Pickup and delivery are free.
Frequently asked.
Questions
- Can mildew be removed from a wool rug?
- Usually, when it is caught before the foundation has rotted. Full-immersion washing and fast, controlled drying remove the growth and the smell.
- Is a moldy rug safe to keep in the house?
- Keep it out of living spaces until treated, especially if anyone has allergies or asthma, and handle it as little as possible.
- How do I know if my rug has dry rot?
- Flex a corner gently. A healthy rug bends softly; one with dry rot feels stiff, crackles or cracks. Send us photographs and we will advise.
Related reading
Antique rug restoration steps, from intake to return
What actually happens between the day a rug leaves your floor and the day it comes back: seven stages, in the order a conservator works them.
Searching for rug repair near me? What to ask before you hand it over
Not every shop that says rug repair does the work in house. Six questions that separate a conservator's studio from a drop-off counter.
Inquiry
Send photographs of the rug.
Include the back and any spotting, and tell us where it was kept. We reply with an honest assessment.