My garage floor is not level. The garage doors are level as I have held a spirit level up to each. One side of the garage door gently touches the floor (as desired). The other side has a gap between the bottom of the garage door and the floor of 2 inches.
I have researched how to fix this and videos show that self levelling compound exists. From what I've understood, I use an adhesive such as Eco Prime Grip on the existing concrete, and pour the self levelling compound on top.
The confusion I have is, the levelling compound description on the website says
Coat Depth: 1-10mm
Does this mean that I can only apply up to 10mm at a time? Or can I use this to try to fill this 2 inch gap?