Removing gloss paint from window ledge?

vern

New member
Hello, I asked this earlier and got it all wrong. Again, apologies for wasting the time of the 2 kind people who answered. The problem is that I have gloss paint on my external concrete window ledges. The paint is flaking and cracking, and letting in rainwater. I wonder if you could tell me the best method of removing the gloss paint (the windows are UPVC, so I need to be careful). And do you suggest using stabilising solution before applying the masonary paint to the window ledges? Any other advice would be appreciated. Thanks
 
I've tried googling this and the clearest answer is as follows:

There are a number of chemical paint strippers on the market. The most effective products contain methylene chloride, but because of its environmental hazards, some hardware stores might not carry stripper that incorporate this chemical. I suggest that you visit your local industrial paint store (not hardware store) and see what they can offer you.

If none of the chemical strippers work, you will need to have someone come in with an abrasive blasting machine. This will remove the paint and clean up the concrete. To prevent dry dust from flying in all directions you might consider abrasive blasting in a water slurry. Alternatively, look into the use of high pressure water blasting. This is very effective, but it does dump lots and lots of water around the working area. Last, but not least, some contractors use high pressure water with baking soda as the abrasive.
 
I've tried googling this and the clearest answer is as follows:

There are a number of chemical paint strippers on the market. The most effective products contain methylene chloride, but because of its environmental hazards, some hardware stores might not carry stripper that incorporate this chemical. I suggest that you visit your local industrial paint store (not hardware store) and see what they can offer you.

If none of the chemical strippers work, you will need to have someone come in with an abrasive blasting machine. This will remove the paint and clean up the concrete. To prevent dry dust from flying in all directions you might consider abrasive blasting in a water slurry. Alternatively, look into the use of high pressure water blasting. This is very effective, but it does dump lots and lots of water around the working area. Last, but not least, some contractors use high pressure water with baking soda as the abrasive.
 
Just scrape off the loose paint and use a good masonry paint. You only need stabiliser if the substrate is powdery, which I doubt your concrete cills are. Dulux Weathershield is what I would use. Not cheap, but it will stay put for a very long time.
 
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