HI All....read everything and to me it would appear the main cause is your slab, albeit issues around the slab. A trench is a start, with extra drainage (black round pipe with heaps of holes in it, and loads of scoria). My opinion is that the actual ground is damp and unfortunately concrete is porous, so as long as there's heaps of water around that cannot drain away, the concrete will slurp it up. (I'm no drainage expert) As far as your gib goes, I don't think you have any option but to replace it (then insulate wall by wall as you go.) Here in NZ, I previously worked for a company that did leaky building repairs, and honestly, that black mould is a very real danger to the family's health, so it's got to go. Like others have said, you may get rid of it visually for a period of time, but once you rip the gib off, you may come across other issues. I'd also invest in a dehumdifier and keep that cranked to start getting moisture out of the air, or other options as others have mentioned. Sorry Cathy, ain't no easy fix there..................... Is it possible to have a look into council records to see what the land back in the day was actually used for? That may give you an insight into what the problem could be.

I've been playing around with a pantry location. Originally, I was going to move the pantry into the laundry with some custom shelving and cut the laundry space in half. Now, Im thinking of cutting into the study area and building a wall there, and converting the new space into a long and narrow walk in pantry. Either that or build half a wall and put built in shelving in the study. Building the extra wall will reduce the need to cover in the door way that is currently in place and instead utilising it. Thoughts? p.s. this isnt too scale.

siriuskey, Yes, the courtyard is open to the sky (no roof over it), I assume this is what you mean by double story. Ref. below photos, I would love to get this look, especially the first and last photo, where you can see family living space from the first floor. I can't achieve this in my plan as it eats a lot of floor space upstairs. The referred plan (photos) has a very big void combining staircase, hallway and dining area. I know it is not easy with cooling and heating when you have such a big void. So, I explored a few ideas (with my limited knowledge on this topic) before achieving the current floorplan. I have also thought about, in my current plan, extending the void on the staircase to the dining area (it is more like L shape) but i wasn't sure if that makes any difference. keen to hear your thoughts.

Hi oklouise The sad part is the existing bathroom is beautifully finished! This whole house was well finished and really well built. It was sad to have to demolish things that were so well done, but the design problems made changes necessary. The bathroom has porcelain wall tiles floor to ceiling on all walls and a white polished porcelain floor (slippery as all hell, and a mongrel to keep the grout lines clean!) is laid over a full 300mm+ of solid concrete, under which are all the drains. Outer walls are 200mm of reinforced solid concrete. Tiles on internal walls are over cypress timber frame with generally two layers of lining glued, screwed and nailed on - and there is way more timber in the frame than necessary. I think the builder (who built it for himself) thought the house would last forever and would never need to be changed in any way. Exact distance from external door to wall is 1.1m on both vanity and shower side. The door combination is 1200 wide and placed dead center. It's worth noting that 300m on the vanity side of the door is full-length frosted glass panel and it's possible to infringe a bit on that area if absolutely necessary, provided there's enough room for the door to swing safely (as it swings toward the vanity. I will take some photos now and share.