Wallpaper and Lead Paint predicament
I just purchased a house from 1973 that seemingly was clad in wallpaper in 1978. It has been owned for 50 years and finally changed hands to me.
The first thing we have started off with is removing wallpaper because if you can imagine... it's a bit dated. At this point, we have removed wallpaper from one bedroom, the kitchen, hallway, and living room. The wallpaper in the bedroom and kitchen did not come with the backing, so they were steamed and peeled. The other spaces peeled off with the backing (yay). On all walls there is a slight residue still from the glue. In some areas, the wallpaper took a layer of paint with it, sometimes one layer, sometimes down to the drywall paper (2 layers it looks like between the wallpaper and the drywall)
Now comes the issue. Today we tested and found that the base layer on the walls is lead paint. The plan was to wash all the walls and then use Gardz to seal the wallpaper adhesive. Now I am unsure. I don't want to agitate the lead paint too much with a wash since the layer that the wallpaper was on seems to be a very thin prime, and I certainly want to encapsulate the lead paint.
Attached are a few photos of wall examples. The textured wall had HEAVY wallpaper and will need some sort of skim coat. I still want to seal in the lead, but don't want issues with reactivation the adhesive. FYI the white on the walls where the gouges are is from some oil primer just to stop chipping or moisture from getting to the drywall.
What is the best order of business to encapsulate the lead paint, not reactivate the primer, and ideally not get dust all over the place? Thanks for reading!