Howdy,
Like others i want to build a man cave livable room and the end of the garden.
Its gonna be 2440 x 2440 x 2500 plus a small side extention same hieght for toilet and shower. (very cramped i know but doable).
I share a solid rear boundary brick wall 215 with some extra piers my side in it. ( it used to be a cavityless factory outer wall)
Its has pertruding double flat tile drip and a soldier coarse on across the top. Total 2650 high from ground. My side, there is damp on 1/3 because the niegbour has build up all sort on the other (a small high disused fish pond ).
I'm to make up off this wall a standard timber frame and flat roof.
My question is this so far;
I already have 175mm poly slabs for floor insulation.
I want the threshold of doors and the floor to be say 25 mm up from level with outside ground on completion.
I don't want to pour one big slab but rather build a 215mm block perimeter on a footing, then infill with the insulation slab to levelish with the blocks and my floor cover on top of that.
What do I need to additional do to make this level floor water and damp proof from the outside ground ( and underneath i guess) before I build my frame work on top.
Anyway thats me and my dream for this years nice weather. Any tips and guides be great.
Thanks
by 