DIY Spray Corkco

I need to seal an aircrete wall I'm planning, and wanted to use spray stucco if possible. Does anyone have any info on this. Everything I seem to pull up on line wants me to pay THEIR guys to do it. But from what I can tell, anyone with a little practice could do it themselves. IF they can afford the texture sprayer that is:) Possibly rentable but I'm just feeling around on the subject. It also has sound deadening properties, so I'd like to put it thick as possible. Looks like 2 or three coats max.

Here is a different system,

This video explains how to make a spray unit
And where to buy one.
https://www.etsy.com/shop/HoneyDoCarpenterShop

Texture finishes
exterior-texture-sprayers