Been carpet cleaning now for almost four years and whenever i have come across a Belgian Wilton i have decided not to risk cleaning it, turned down about three jobs so far, until last week when my brother asked me to clean his carpet couldn't believe it when i saw it he had replaced a beautiful 100% wool Wilton for this polyprop, all i could think was the first time he asked me to clean his carpet and i cant do it, i explained the problem to him and he said we will take the risk, but it did not put me at ease, as i would probably never hear the end of it if i shrunk it.
I decided to clean it, it was well attached to the grippers and i reasoned that if i lightly presprayed some powerburst agitated then extracted with a low psi around 200 using my inline heater for a bit more oomph i may be ok.
The end result was fine it did not shrink and they were delighted, what i wanted to ask was do any of you routinely refuse to clean these as the risk of shrinkage is significant, they had a small off cut which i cleaned with a high psi and plenty of prespray and a 4ft piece shrunk by about a cm