Browning Rug: How Do You Fix It?

Rug Browning: Causes and Solutions

Rug browning, also known as rug yellowing, is a common problem that can affect rugs made from natural fibers such as wool, cotton, and sisal. It is caused by a variety of factors, including over-wetting, high alkalinity, cellulosic browning, BHT in carpet cushion, and formaldehyde. Let's go over a few causes and find the right treatments.

Over-wetting or High Alkalinity

Over-wetting or high alkalinity can cause the fibers in the rug to break down, leading to browning. This is most likely to occur when a rug is cleaned with too much water or with cleaning products that are too alkaline.

Cellulosic Browning

Cellulosic browning is a specific type of browning that occurs in rugs that have jute backing. Jute is a natural fiber that is susceptible to browning when it is exposed to moisture and alkaline cleaners. This type of browning is more common in older rugs.

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BHT in Carpet Cushion

BHT is a chemical that was used as an antioxidant in the manufacture of rebond cushion. When stain-resist carpet came into existence, many yellowing discolorations appeared especially after cleaning. It was traced back to the cushion and pressure from the mills put an end to it. This type of yellowing is noticeable because it is a VERY BRIGHT canary or legal pad yellow.

Formaldehyde

Formaldehyde is a chemical that was once used in the manufacture of carpet, but it has not been used in over 25 years. However, old information sometimes keeps being spread.

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Solutions for Rug Browning

There are a few different ways to remove rug browning. The best solution will depend on the cause of the browning.

For over-wetting or high alkalinity:

• Dry the rug thoroughly. Use a fan or air mover to help the rug dry quickly.
• Apply an acid rinse. This will help to neutralize the alkaline cleaners and prevent further browning.

For cellulosic browning:

• Spray the affected area with a reducer shampoo. This will help to remove the browning.
• Rinse the rug with an acid rinse.

For BHT:

• Dilute citric acid in hot water.
• Mist the affected area with the citric acid solution.
• Once the area is dry, vacuum it aggressively.

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Preventive Measures

To prevent rug browning, you can take the following steps:

• Avoid over-wetting the rug.
• Use neutral pH cleaning products.
• Dry the rug thoroughly after cleaning.
• Use a rug pad to protect the rug from moisture.

Seek Professional Help

If you're not comfortable trying to remove rug browning yourself, you can always seek professional help. A professional carpet cleaner will have the experience and expertise to remove browning safely and effectively.