Thank you very much for the reply, with this information I searched the manufactures web site www.underlay.com (Ball & Young) and the technical data for this underlay does say “Now suitable for wood-block floors” which in itself implies that it wasn’t suitable before so I gave them a call and...
9 months ago we had a new carpet laid in the lounge and the carpet fitter used an underlay called Cloud 9, which gives a real good feel to your carpet but has a plastic membrane on the bottom
We noticed the other day a lump in the middle of the lounge, after lifting the carpet (what a pain...