Prepping porch paint
#1
06-03-20, 12:59 PM
Prepping porch paint
I have a previously painted (unsure how many times) concrete porch (about 10' x 6') that I am looking to paint.
Unless I get a better recommendation, I'm planning to use Behr elastomeric paint. Behr recommends "removing all loose paint", and I'm wondering how you would go about doing this. It really isn't cracking that badly, just here and there. What is the best route -- Strip it? Sand it? Take it off with a pressure washer? Please advise on proper preparation as I know it is the most important step. Thanks.
Unless I get a better recommendation, I'm planning to use Behr elastomeric paint. Behr recommends "removing all loose paint", and I'm wondering how you would go about doing this. It really isn't cracking that badly, just here and there. What is the best route -- Strip it? Sand it? Take it off with a pressure washer? Please advise on proper preparation as I know it is the most important step. Thanks.
#2
06-03-20, 01:06 PM
Member
Unless I get a better recommendation, I'm planning to use Behr elastomeric paint
It really isn't cracking that badly, just here and there.
#4
06-03-20, 01:36 PM
Thanks. Angle grinder with what type of wheel? Or something else?
I've had good results with Behr and they have a lifetime guarantee, but what would you recommend?
I've had good results with Behr and they have a lifetime guarantee, but what would you recommend?
#5
06-03-20, 01:42 PM
They rent a concrete sander [scarifier?] which I think Marq might be referring to. IMO that's over kill for what you need. I'd pressure wash and see how much comes up, if you don't like how it looks after PWing you could brush/roll on a chemical paint stripper, let it work and then either scrape or pressure wash again.
#7
06-03-20, 01:46 PM
I pressure washed this approximately a year ago and never got around to painting then. I think it's worth a shot, though, so I'll post an update once I do that.
Thanks.
Thanks.
#8
06-04-20, 09:41 AM
The pressure washer got off what you see in the picture when I get the tip right down on the concrete. I think it would take forever to try and do the whole porch, so I think I'll rent an angle grinder from HD. What type of disk would I need? Is there a risk of really damaging the concrete surface?
#9
06-04-20, 10:41 AM
I'd apply a chemical stripper, let it work and then scrape or pressure wash it off. Sometimes it takes multiple applications. If you sand I'd expect 60 or 80 grit would be what you' want to use.
#10
06-04-20, 10:49 AM
Member
Is there a risk of really damaging the concrete surface?
Some type of large surface grinder!
FYI strippers are nasty, and if you dont get it all off it will react with the new paint but some people love them!
#11
06-04-20, 12:32 PM
Well darn I don’t really want to go the big drum sander route.
I’ll give the stripper a go and see. What is the best to use, scraper (just a metal paint scraper?) or is sanding it better? I was thinking maybe some really coarse steel wool.
I’ll give the stripper a go and see. What is the best to use, scraper (just a metal paint scraper?) or is sanding it better? I was thinking maybe some really coarse steel wool.
#12
06-04-20, 12:43 PM
The trick with strippers is to apply it and let it work but scrape off the paint before the stripper starts to dry. The stripper 'wrinkles' the paint as it lifts it from the substrate. A wide stiff putty knife works good for scraping. The more caustic strippers work a lot better than the green/citrus strippers.
#13
06-04-20, 04:38 PM
Okay thanks. Klean-Strip Premium got really good reviews so I’ll give it a go. And I don’t want anything “green”, lol, just that paint gone!
