Yellow discolorations develop slowly by the transfer of trace amounts of asphalt residue through the accumulation of thousands of footsteps.
White carpet turning red underneath.
As the air is forced through these gaps it passes through the carpet which acts as a filter to the air.
During the 1970 s formaldehyde emissions from particle board sub floors and furniture were cited as the culprit in discoloration under furniture.
Often even if mold growth is not visible on the top of carpeting it may be occurring underneath the carpet where it can t be easily seen.
This caused some carpet areas to turn dark green not yellow.
Those with much peroxide are bright yellow and exhibit an orange halo which moves outward as the bleaching action progresses the center turning yellow this is the only household product that causes this peculiar phenomenon the halo is a.
Common pollutants that can contribute to the problem include smoke from cigarettes and candles cooking oils fireplace ash and dust.
Spots caused by benzoyl peroxide are yellow to orange in color on most carpet pinkish on blue carpet.
Carpet in this condition is most likely not salvageable and should be disposed of and replaced.
Carpet suspected of containing mold should always be examined on both sides.
Yellow orange white red blue purple lime and green carpets generate in villages.
This problem was all but eliminated by 1980.
White and light gray carpet can be found in igloos if its basement generates 50 chance red carpet can also be found.
The stain gradually appears over time.
Antioxidants used in the manufacture of rubber and petroleum from exterior asphalt sealants and or spills tracked in on shoes and casters may cause permanent discoloration to any resilient floor.