Balcony waterproofing.
The right way to waterproof a balcony is to get under the sliding door. This balcony wad previously waterproofed and this did not last due to the fact the water breached under the door and leaked below causing damp damage.
ARK removed the door installed a weather sill and waterproofed….There are no short cuts to achieving a long lasting water tight system…A bit more expensive now but money saved in the long term.