I think this is where a burn test might have been useful, both on the face fabric and the suspected jute fibres.
i don't think there would have been a chance of shrinkage, the face manmade fibre would have be OK and if the backing had been suspect lower pressure would have stopped any wetness reaching through the deep pile
Hi Mike, I did a burn test. Definite synthetic, most likely polyprop. I guess I should have done the same on the backing but was certain just on visual that it was jute.
Like you suggested, I turned pressure right down to just over 100psi. Prespray was light mist and envirodri did a good job of making the pile look its best. Luckily it wasn't a real minger.
One thing though, the prevac was a bugger. Sebo struggled so ended up relying on the super suction of an old faithful Henry.