Drywall Has Different Surfaces

Here I’m preparing to hang wallpaper on new drywall in a new addition to a 1930’s home in east Houston .
First I’ve used a damp sponge to remove all construction and sanding dust. Next I’m going to apply my primer.
It’s important to note that, even though this is wall is a new sheet of drywall, it’s not all the same surface.
We have mostly large expanses of drywall / greenrock (the type of drywall that’s used in wet areas ).
But at the joints , and covering where the screws and nails hold the drywall to the studs , we have joint compound . That’s the strips of white areas.
And next to the crown and door molding and the baseboards is overspray from the paint that was applied to the wood trim.

Here I’ve applied my light blue-tinted wallpaper primer over the top 1/3 of the wall.
It’s important to be sure that the primer you use is suited for use under wallpaper . But also that it will properly adhere to and seal all the surfaces on the wall .

My primer (below) will stick to just about anything. But this photo is interesting. Because my primer has been rolled on evenly across the wall , and cut in with a trim brush along the trim and corners . But you see that the primer is drying at different rates . On the right side of the photo, the primer is applied over the bare drywall, and it’s drying quickly. But toward the left, next to the door trim , the primer is drying more slowly. This is because there is paint overspray next to the door trim . The paint is semi-gloss enamel , and my wallpaper primer reacts with it differently from how it reacts to flat paint or drywall or other surfaces.
Not a big deal. Just be aware of the need for different dry times due to different surfaces the primer is applied to.

My preferred wallpaper primer is by Roman , called Pro 977 Ultra Prime. It’s not readily available, but you can find it on-line. All Sherwin-Williams stores can get it from the distribution center – but not all store managers know that, or are willing to do so. I get mine from Murphy Brothers Paint on Bissonnet near the Rice Village , who stocks it just for me.

Tags: 1930's, adhere, baseboards, construction, crown, cut in, door, door trim, dry times, drywall, dust, enamel, flat, flat paint, greenrock, hang wallpaper, home, houston, joint compound, joints, molding, murphy brothers, nails, overspray, paint, primer, pro 977, Rice Village, roman, screws, seal, semi gloss, sherwin-williams, stick, studs, surfaces, trim brush, ultra prime, wall, wallpaper, wood trim