Home DIY

Cheers, I made a start on the weekend...

Obviously check that there's enough space for your plumber to fit it but also check there's enough space around it for servicing. That should be in the manual.

Check,

As you've already figured the most important bit is keeping out the water. Our builders built a base from timbers with DPC membrane underneath on top of a concrete base

Check

I'd worry about putting render over wood because the wood will expand/contract and as you've said it may well crack.

Good point I went with concrete board over timber frame. I think it'll take a render coat okay

I would also avoid a flat roof if you can but your diagram seems to show a pitch?

Yep shallow little pitch

Also who will be responsible for making all the relevant holes for the pipes? This will need doing properly.

Yeah good point the plumber will do all the drillings.

Flue has to exit at least 60mm from the house for building regs by the way. Ours goes straight out the top.

Do you mean 60cm? Ours will come out and along the wall a bit.