1. The term surfactant leaching is used to describe spots or streaks of sticky
brown or colourless material that appears on the surface of freshly applied
latex/Water based paint. Surfactant leaching, also known as water spotting, is
a common paint problem that may occur with any brand of latex/water based
paint. The spots or streaks caused by surfactant leaching, while unsightly, are
not harmful and do not affect the performance of the paint.
2. Surfactants are ingredients in paint that are critical to the performance properties
of the paint such as its colour, stability, flow, and leveling. These materials
usually evaporate in good drying conditions, or they are locked into the paint film.
The staining occurs when drying conditions cause the paint to dry too slowly,
allowing the surfactants to rise to the surface of the paint.
3. Where you are likely to encounter surfactant leaching.   Typically on a freshly
painted bathroom or Laundry. This is due to the levels of humidity crated in these
rooms. We have all at some time seen the glossy looking snail type trails down
the bathroom walls.  This is a classic of surfactant leaching.
4. Removing surfactant leaching is usually quite easy. If the problem occurs within
a day or two of painting, a wet cloth will usually take the problem away. Run the
hot water in the shower and allow the room to steam up and then wipe down the
walls. This will usually work.
5. If this has occurred on an external wall, the best remedy is allow the weather to
remove the surfactant.

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