Waterproof to the bath normally.
If your bath has a self supporting/ levelling frame with built in facing panels you can waterproof the whole room then silicone the bath to the…

Pull the architraves and jambs off (if the jambs are fixed to the window fin leave them in)
Sheet, waterproof and tile the window reveal, using a neat aluminium tile trim.
Extra…

Water saving shower heads have really taken the fun out of showers

^^^^^^^ Yep, as above

If hinging to the wall, you'll need strong support in the wall because it's only fixed in two places.
The fixed panel gets stiffened when siliconed to the tiles.

Hi,
In the last 3 years I've gone from 1000 acres to 46 acres to 9 acres to 5 acres, weening myself off it.

You'll get over it, nothing serious.
(Ex Carpenter)

^^^^^^ As per Matergabiae.
It is vital to excavate down in a test area to see what you're dealing with.
Foundations = pretty bloody important

That doesn't look like plasterboard, looks very fibrous.
Get it checked out by a Pro.

Demand to have it rectified immediately, don't take any crap.
After third call threaten to take them to the regulating body,

You could try thedesignhunter.com.au

Rough for grip, yes, but make sure it's not powdery or flaky.
The waterproofing is the next thing to go over it, check with the waterproofer regarding warranty.

Hi,
As an ex Builder, it's good to see you're being realistic with the site costs.
$50K is a decent budget, but it obviously depends on the amount of slope, does it…