We have used A to B insulation on 3 occasions now ,after years of having problems with damp on the front of the house ,these lads sorted all our problems in one day the results were prity much sorted within a few weeks of drying out after the insulation removal on the front of our house a year a ago no issues are there at all now ,we have just had them back to do the back of house which had similar problems, very competitive on price ,excellent to deal with ,highly recommended