I started about 8 this morning and there had nearly been a frost but not quite. The first few houses had loads of condensation inside and I found it very hard to see if I was doing a good job or not. I went back to one as it was a first clean (and the paintwork was bogging) and it was a mess. I did it again and I think it was OK, but it was hard to tell and I couldn't keep going back. Is it a case of finding out which houses are like this and make sure you don't do them early on cold mornings??