Russell griffiths

What a load of bollox fit what you want, if bc questions it just point to the ring doorbell, if they get arsy then drill an aftermarket one in. but I would push back against this. are you in Beirut or somewhere.

Yes. I can count on one hand the lads I’ve had here. Piling contractor. plasterer floor tiler electrician plumber nobody else planned until it’s finished. I reckon I’ve saved over 200 grand in labour

Shouldn’t there be a cavity tray above the flat roof area, not on top of the steel any water penetrating the cavity wall will drip down and sit on the steels. very slim chance of water getting in here, but I thought that was standard when you change a cavity wall. I would insulate that cavity up to the height of the top of the warm roof.

Have a look at a dry verge system

Do this. ⬆️

In that case you should follow manufacturer recommendations, all mine can be covered in soil.

Just ensure the soil doesn’t contain large stones, backfill by hand and compact in layers of 150mm just with your feet, don’t use a wacker plate on top of the tank. wacker plate or substantial compaction around the surrounding area.

22m is too small, I live in a cabin we have on site, it’s 6m x7m i would not want it much smaller, you could go 7x5 any smaller and I think it would be a painful experience.

Wait until you start building and you hit the 6th anniversary from when you put that first spade in the ground. now that’s a shock.

What’s your budget ? show us a pic of what you want to build how much is a finished one worth near you.

Get a higher loading xps. 500 or more. They build car parks on it.

Look for a frosty tap, will fit any width wall, drains to the outside like you describe. frosty might be spelt frosti have a google.

build a cabin, we have lived in one of these for the last 2 years, it’s 6m x7m I couldn’t imagine living in a static with its skinny corridors and pokey bathroom.

Why will it warp, the time you have glued and clamped it to the glue lam that’s already there it will be as straight as the beam you fix it to.

What is at the other end of the gutter, can you put in an additional outlet, so one at either end. don’t worry about the fall that’s pretty irrelevant it’s about getting that water out of the gutter.