[Bonzoso]

Hi all,

I just finished removing painted wallpaper in our 1950's rancher. What a job after several coats of paint (no, the painted wallpaper was not my doing). Anyway, there are many gouges and abrasions in the paper that I'm going to have to fix before painting and I was wondering if these spots should be primed first before spot mudding, should I tape the larger areas where the paper was abraded? In general what is the best way to proceed. Thanks.

 

[oh'mike]

Yes, prime before skim coating or the paper will get wet and puff up.

By far, the best primer for that id Gardz----

Have you scrubbed off all of the wall paper paste?

 

[Bonzoso]

Yes, prime before skim coating or the paper will get wet and puff up.

By far, the best primer for that id Gardz----

Have you scrubbed off all of the wall paper paste?

Yes, went over the wall after removal and sprayed down a second time with wallpaper remover and scrubbed with sponge and knife in places then rinsed with water. So I take it that I should prime all the walls before addressing the gouges and then prime again before painting?

 

[Gymschu]

If there are any hints of adhesive left on the wall, and you have gouges, etc., YES, priming all the walls is the way to go. If you don't prime the WHOLE wall, any adhesive (even minute amounts) will telegraph into your finish paint. The gouges need sealed because if they are not, bubbles will form when you fill them with joint compound. After you fix the gouges and the joint compound dries, sand them flush, remove the dust, and prime the patched areas.

Then your walls will be ready for paint.

 

[jeffnc]

Ideally it is best to prime twice, unfortunately. If I were only going to prime once, it would be before patching and painting. Use an oil primer (it seals any water based drywall paste residue) and will not bubble any drywall paper. Or what I usually use is Gardz. If you're painting with flat paint you don't necessarily need to prime again, but with any other sheen I would prime a second time with Gardz after all patching and sanding is done. For smoothest finish it's best to give a quick sand after the primer coat as well.

 

[Bonzoso]

Ideally it is best to prime twice, unfortunately. If I were only going to prime once, it would be before patching and painting. Use an oil primer (it seals any water based drywall paste residue) and will not bubble any drywall paper. Or what I usually use is Gardz. If you're painting with flat paint you don't necessarily need to prime again, but with any other sheen I would prime a second time with Gardz after all patching and sanding is done. For smoothest finish it's best to give a quick sand after the primer coat as well.

Thanks a lot JeffNC!:thumbsup:

 

[throrope]

Ideally it is best to prime twice, unfortunately. If I were only going to prime once, it would be before patching and painting. Use an oil primer (it seals any water based drywall paste residue) and will not bubble any drywall paper. Or what I usually use is Gardz. If you're painting with flat paint you don't necessarily need to prime again, but with any other sheen I would prime a second time with Gardz after all patching and sanding is done. For smoothest finish it's best to give a quick sand after the primer coat as well.

Yes, oil primer is best, but before use I suggest checking local code. I recall ours now prohibits oil based paints inside. Since the latest water based latex paints improve with each passing year, I don't have issue.

A professional drywall and paint contractor I used to hang 60 sheets in our basement uses one coat of white ceiling paint for primer. "Primer is just watered down paint" was his comment. I took his lead with great results.

Think about how hard that painted paper removal job was.

 

[jeffnc]

Well, I agree in principle that primer won't necessarily help you much in some painting situations, and in fact I think using a good quality self priming paint (even if it's not labeled P&P in one) is better than using cheap primer not well suited to the job. So what your contractor did can work fine, but I can't totally agree with him either. There are primers that work very well for what they do, and just because a lot of primers don't really seal drywall very well doesn't mean none of them do! Gardz is actually a great drywall sealer, and I'd recommend it as a standard primer, regardless of its design as a "trouble sealer".

 

[chrisn]

Oil primer ( in this instance) is not needed at all. Gardz is made to do the job at hand.