We're having the patio relaid, using a company recommended by a friend as they did her patio last year and it looks great. They are nice people, good attention to detail and I thought really seem to know their stuff.
However, when we were discussing things the other day, they've said we can have the new patio higher than the old one, much closer to the level of the damp proof so we don't have as much of a step down to outside. I said wouldn't this cause issues and they said no because there will be a gentle fall in the level of the paving away from the house.
Subsequently as I've been rooting around tile brochures picking what we want, I've seen them say there should be 150mm or two brick levels. Having searched this online, I can find lots of mention that this is for building regs, but I can't actually find a building reg which states this.
I don't want damp and I don't want to end up when we eventually sell with survey issues due to the height of the patio, so I'll be telling the company on Monday that I'd like 150mm to stay, but does anyone know if this is absolutely true? As I said, aside from chat forums (irony not lost that this is a chat forum!) is it a building reg rule and where can I find this rule?
I've saved for a long time to have this dream work done and I'm feeling very let down and sensitive about the advice given to me the company who've already started the work, so I want to be knowledgable before I talk to them on Monday.