I have an existing garage floor which is very rough. The walls are single thickness brick.
I would like to create a smooth surface which will withstand a car.
a) If I create a wooden frame to contain the screed, how deep should it be?
b) Do I need to leave a gap between the surface and the new screed as the DPC is visible above the existing concrete.
c) Should the floor be sealed with e.g. Thompsons or bitumin before laying the screed and if so how far up the wall should it come to create a single damp proof layer.
d) should the oil stains be removed first.
The garage is very damp. Cardboard boxes go soft in a week or so and the freezer is dripping with water on the outside.
a) Should the walls be sealed on the outside with e.g. Thompsons?
b) Must the walls be dry externally before painting the outside.
c) Is there an advantage to painting the inside as well?
d) How long between painting outside before painting the inside?