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Re: interior painting

Posted By: ray
Thursday, 19 July 2001, at 1:14 p.m.

In Response To: interior painting (bob turner)

Bob,

You're right. I believe that there is bondo out there with the same name! I'm referring to a product made by U.S. Gypsum. It's a product that is used as a first coat over nail-heads,outside corner bead,gouges etc...when taping and coating drywall.There are different grades with their differences being in the amount of workable time.It comes in powdered form and once mixed with water,begins to set-up after a certain amount of time.It sets quite hard and can be applied heavier than regular joint compound.Joint compound,when applied thick or heavily, will shrink and crack. In your case, I would use this to fill-in any areas where coats of paint peeled, plaster was loose and removed,any recess or void was made. By the way, this now comes in a 'sandable"form where as the original is nearly impossible to sand.This first coat, or application,would be mixed fairly thick (like oatmeal) . A second coat would be applied after the first one is dry (usually 24 hrs.) and it would be mixed a bit thinner. If you use the sandable type, you can use it for both the first and second coat, avoiding the need to use/buy joint compound. I've skimmed in just bad spots and I've skimmed in entire walls, it depends on the condition of the wall. As for priming/sealing, after you have scraped everything that is loose, prime the entire wall(s), coat/repair where needed then prime the repairs. You are now looking at a completely primed and repaired wall that is now, ready to paint. Let me say that U.S.G. is not the only company that makes duro-bond or hard coat and they are basically the same thing and all of them work well. As far as latex over oil-based paint, if it has adhered for you, you are lucky. Usually this is risky. Some claim to have done this with good results after sanding the wall(oil painted) with 80 grade sandpaper thus giving the latex paint something to hold to. You can try this, it might work but I don't recomend it. Priming with Zinser over the good areas should keep you out of trouble. If the latex is going to peel or pull away from the previously painted oil-based wall, it will most likely do so when you prime with the Zinser. If it does'nt, you should be in good shape. Good luck. Ray

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