I did see them doing it yesterday but thought seeing as it was their wall they could do it. It was only when other people mentioned it that I thought it might not be right. My father in law thinks that the waste pipes should be inside, also you can't have two running into one or something.
I...
Can anyone please advise me if this is ok. I know nothing about plumbing but a few people have commented that it doesn't "look legal". It my neighbours new waste pipe since they moved their toilet and as you can see its an external wall overhanging my drive. Its quite unsightly and I was...