Laying pads under pre padded laminate.
Will additonal padding level out a floor before laminate.
Because laminate is typically thinner and less sturdy than real wood it is critical that you properly level the subfloor before you install laminate.
Mix up some of the self leveling compound in a bucket with the drill and paddle until you achieve a thick creamy yet pourable mixture.
Laminate floors may be glued down or installed as floating systems which lock together using tongue and groove connectors.
I d like to also put down a thin underlayment on the wood subfloor.
Good to know if you need to cut the door get the approximate layout of the cut and use masking tape on top and bottom of the cut line to reduce splintering as the cut.
The product has a thin underlayment attached.
If a floor plank and underlayment or adhesive will not fit under the door remove the door and trim it with a circular saw about 1 8 inch above the level of the new flooring.