Those brown spots and patches that occur after a deep carpet cleaning are a direct result of carpet wicking.
Carpet turns brown after cleaning.
The ammonia and white vinegar may help to pull the mildew out.
Bht in carpet cushion.
Then try pouring some ammonia and white vinegar into the brown stain.
The bht is fine as long as it has a way to air out.
Wicking occurs when carpet is stained deep down to the bottom of the fiber and then is moistened through cleaning.
They should be able to get the remaining high ph out of the carpet bring things back into balance and get it looking great again.
If your carpet has brown spots after cleaning call back the company that you had clean your carpets.
Bht was used as an antioxidant in the manufacture of rebond cushion.
This is called wicking.
This is one of the reasons you never want to subject your carpet to too much moisture as it can lead to brown.
O ccasionally a brownish discoloration appears on a carpet or rug after it has been cleaned.
This is basically a reaction that your carpet has all the time if it has butylhydroxyltoluene or bht in the carpet padding or glue.
Recently i cleaned a wool rug in far west utah where all the fringes had been turned brown due to what is called wicking.
In order for this discoloration to develop several factors must be present a cellulosic fiber moisture and slow drying.
These stains occur if there is too much cleaning solution and water used during the cleaning process.
Another reason these brown stains occur is that dirt that is usually deep down in the carpet resurfaces as the carpet dries.
Keep it there a half hour or so and then work on drying it again.
Browning is also very prevalent in all types of cellulosic fabrics such as cotton linen rayon and viscose.
The cause for brown stains on carpet is moisture and most often water.
You can reverse this by having the carpets cleaned professionally.
The water can be clean or dirty it isn t relevant.
They should come back out and re rinse the carpets with an acid rinse.
One of the causes of this discoloration is a condition called cellulosic browning.
When stain resist carpet came into existence many yellowing discolorations appeared especially after cleaning.
Wicking occurs during the course of drying when either soil or cellulosic material is absorbed from the base of the carpet fiber to the tips of the fiber.
What causes carpet browning.
The other affect that you might see is called phenolic yellowing.
This caused the carpet to turn brown or to brown out as it s called in the carpet cleaning world.