In trying to apply paint to a 'sandy' type stucco finish:
Home previously spray painted with what appears to be extremely watered Dunn Edwards flat Interior/Exterior so bleached by the sun that there are tones lighter huge spotting, especially around cracking stucco. [done in 2008]
So surface has essentially been primed. I asked the group and got a good recommendation for readily available Behr Masonry Stucco paint from Home Depot. The paint is thick, doesn't separate even days after shake mixing, and covers with one coat.
I'm doing this myself, dont' want a lot of prep and mess and cleanup, so deemed to use a brush and just do sections at a time with any overlaps at corners/junctions, so won't show. I can do the painting in shade, in evening, so sun won't accelerate drying before curing.
First problem is that it appeared that one gallon did around 80 sq ft !!! I tried cutting back, but can't even begin to get paint down into the 'holes' in the stucco. Have taken to poking at the wall with the bristles of the brush which almost works.
Second problem is that the paint dries faster than I can move on. Meaning one can get a 'gummy' overlap between small sections as you move the ladder and scaffolding. Ok, I attributed that to very dry base surface. When done with this first coat, stood back and looked at it. Four days later, it still looked like I had used different colored paint sources, and the surface had a 'blotched' appearance. Looked like a quilt up on the wall consisting of square little 'islands' for the different sections I had done as I had moved along.
Ok, first coat was a disaster so let's try it again. This time I added
2 oz of Floetrol to the half gallon of paint I was planning to use [recommended 4 oz per gallon]. Half gallon should do 80 sq ft on a second coat, right? WRONG! This time I moved as fast as possible. Set the ladder start at the top and come down to the stone facade as fast as possible, then move over and repeat until done. As I worked I completely filled EVERY hole I could see and verified that the surface had a nice wet sheen everywhere. This time I was moving so fast that even the overlaps were successful - they still had their wet sheen into the previously painted areas.I can live with using excessive paint [this is NOT color coverage, but liquid coverage] But I cannot live with the end result: As you stand and look at the wall you see very obviously well defined 'strips' down the wall. All the same color, but looks like sheets of wallpaper overlapping at their edges around 4 inches!
It's been over 24 hours now with time to properly cure and dry and even the sun has hit the wall now, yet the effect is still there!
I can't paint my house and have these ugly patterns left all over it when I'm done. What am I doing wrong here?
Again spray paint is not an option [I have a $2,000 airless sprayer in storage I don't have access to since I own one I'm not allowed to buy another one]; rollers might be an option but the cleanup after doing each section will be monumental, plus not sure the roller can get paint down into all the nooks and crannies anyway. So, a brush is the most convenient way that I'd like to stay with. So, why has this turned into a fiasco? Why can't these walls be painted with a brush? What am I doing wrong here?