I know you gotta have it watered down, the knockdown hides a lot of stuff but doesnt required skip trowel work, the mud is a texture mud or all purpose , dont use a hot mud. Oh amd that is a harbour freight tex gun using the smallest tip that comes with it.
It is dangerous and often illegal to use a suicide cord to backfeed a dryer plug, you have no breaker protection on all of your home circuits and it you don’t turn off your main breaker it can blow your Gen when the grid power comes back on and puts linemen at risk. Have a 30 amp inlet box & Interlock kit installed on your breaker panel for an easy & safe connection, cost me $500 to have an electrician do it on my panel.
