[JLawrence08648]

My sister had her Condo repainted, 1 bdrm, 1 floor, concrete slab, own roof. I visited it and noticed cracks in the paint under the window, I flipped the paint off with a knife, going outside, the window sill was completely rotted, even putting my finger under the window. Another day I returned with my drywall tools using my drywall knife to scrape the paint off. I was lifting old old layers of paint. It was easily scraping off. Suspecting water damage, I drilled a 2" hole looking to see if I saw water damage or stains behind the wall plug, looking at the insulation. I did not see anything but can't positively say one way or the other that there was moisture in the sheetrock.

Question - It was lifting off. How far will it extend? Should I keep scraping until it no longer lifts offs? Should I just stop now, prime, spackle, sand, paint?

 

[mark sr]

Normally if it gets wet enough to pop the paint there is a stain but .........
I'd scrape off all I could. If you leave paint with a poor bond it could pop loose later.
What does the backside of the peeled paint look like?

 

[JLawrence08648]

The backside of the peeled paint chips look fine. There is nothing that has given me any indication of water. There is always the nightmarish thought of never ending peeling area, where does it stop. My feeling keep peeling until it stops BUT old paint does not have the adhesion qualities of the paints today. There gets to a point that it becomes unnecessary, the paint I'm peeling off would never have loosen on its own without my assistance. It's a balancing act.

 

[woodco]

if its easy to scrape, scrape it. when it stops being easyl, skim coat it.

 

[Gymschu]

Doesn't appear that any primer was used. I know, I know, it's the modern times and "we don't need no stinking primer," but whoever did the original painting likely skipped the primer and, of course, there is a lot of dust around a spot like that one. Used to see that a lot when my buddy painted McDonald's restaurants interiors. No primer, heck they even had him painting over semi-wet joint compound.