[Eddie_Rhone]

Had a call from a carpet retailer friend of mine last week. He was lifting some old carpet tiles, applying a self-levelling compound and then laying a commercial cord carpet in a school corridor. During fitting some adhesive got onto the carpet, as is his usual practice, he got a offcut wet it and rubbed the adhesive to remove it from the carpet. However this resulted in lots of foam rising out of the carpet and after drying left a dark patch on the carpet, no water ring though, just a dark patch.

He asked me to have a look and sure  enough testing in other areas of the carpet gave the same result, even the area where the orignal incident took place was still producing a foam.

Neither of us have come across this situation before any thoughts, suggestions etc as to cause and any consequent corrective actions which should be taken most welcome.

[mark_lane]

Hi Eddie
Sounds like the carpet tiles have previously be cleaned with washing up liquid or the like,the dark patch was proberbly an  original stain that has wicked up due to not being extracted properly in the first place,i would spray a fine mist of defoamer on the problem areas while using your normal cleaning method this will kill the foam instantly.
                          mark

[Eddie_Rhone]

Thanks Mark

I would normally agree with you but a levelling compound was put over the old floor after the old tiles where lifted. The tiles left the floor in a right state apparently. So any residue from these tiles would have been sealed in before new carpet fitted.

It's a bit of a mystery to us hence the post on this site.