|
Problems/Solutions |
|
Problem |
Description |
Cause |
Solution |
|
Filtration Marks |
Dark line around room
perimeter, stair edges, under doorways and drapery |
The effect of doors and windows
opening, elevator movement, furnace starting etc. that cause changes in
room air pressure. Air forced into wall cavities or under doors
filtering airborne particulate through the carpet fibers. |
Permanent solution is to seal
the walls or floor. Filtration lines are very difficult to clean and can
quickly return if the area is not sealed. Interim solution is a
spot-clean the problem area. |
|
Cellulosic Browning |
Spotty brownish appearance in
parts of the carpet |
Carpet has been over-wet
causing vegetable dye that is present in jute backing to wick to the
surface. |
Acid rinse the carpet or
topically spray a souring agent. |
|
Soil Wicking |
Brownish to yellowish
discoloration of the carpet or a yellowish color on the tips of the
fibers. |
The moisture in the cleaned
carpet pulls residual soil up to the tips of the fibers. Usually occurs
in a heavily soil-compacted area or in an area that has taken an
extended period of time to dry. |
Bonnet clean with a mild
neutral pH cleaner. |
|
High pH |
Yellowish to
brownish discoloration on the carpet. |
Caused by alkaline
residue build-up from cleaning chemicals, improper rinsing of the fibers
or ice melting compounds. |
Test to determine
the pH of the carpet. Select an acidic rinse with opposite acidic value
to balance the pH at 7. |
|
Traffic Lanes Discoloration |
Dark areas or graying in areas
which receive the highest level of foot traffic |
Scratches and abrasions to the
fiber (level loop) matting, flaring or tip compression (cut pile). |
This is not reversible and is
not a warranty item. |
|
Optical Brighteners |
Gradually evolving yellow
discoloration. Carpet slowly losing its color to a yellowish tinge.
Ionic optical brighteners are agents used to convert invisible
ultraviolet light to visible light, which increases apparent brightness. |
Ionic optical brighteners found
in some cleaning compounds applied to the carpet. |
Avoid use of ionic optical
brighteners. Not possible to reverse once damage is done. |
|
Asphalt Yellowing |
yellowing of carpet in traffic
areas around entrances and exits especially from parking or street
areas. |
Caused by asphalt sealers, tar
or oil. Particularly frequent during hot seasons, fresh coatings or from
asphalt being dissolved by coolants, gasoline or similar solvents. |
Very difficult to remove. Use
entrance mats to reduce problem. Solvent-based cleaner to remove from
carpet. |
|
Water Stains |
Shows as a lighter area on the
carpet surrounded by a darker ring. |
Occurs when liquid is spilled
on the carpet. The spill pushes the contaminants that are present in the
carpet to the edge of spill where they dry. |
Extract or bonnet clean with a
mild acidic solution. |
|
Shading, Pooling & Carpet Nap
Reversal |
Carpet appears to have
different colored sections. Sometimes looks like a waterline. |
Fibers in cut pile carpet lie
in different directions usually as a result of an installation defect. |
This is not reversible. Carpet
producers do not warranty this. |
|
Reflection & Shadows |
Carpet has light or dark spots
in random locations. |
Light reflections from a
non-obvious light source (pinholes in draperies, reflection from shiny
objects, shiny kick plates, etc. |
Change light or reflective
sources. |
|
Wear |
Carpet looks worn or old. |
Reduction in the amount of
fiber on the face of the carpet. |
Replace carpet. |