I hope fellow Wet Canvassers here can give me some advice and guidance. Iíve reviewed some old threads here on the topic, and I think I have a plan, but Iíd like to get some comments on my specific situation in case Iím missing something!
I have been asked to paint the outdoor concrete wall, pictured:
The whole length of the wall, and the outbuilding in the middle, will be painted. The idea is to make it look like the stone exterior of the building next to it:
Iíve been told that the paint that is already on the wall is an exterior latex. It looks like a semi-gloss. On the low part of the wall only has a thin layer of white, but the concrete shed has a thick coating of multiple layers.
The wall is cracked and broken in spots. The surface of the building is mostly intact, but there are a few areas where the thick paint is peeling with crumbling pockets of cement underneath.
This is at a school where my children go. Finances there are tight, and I love the school, so Iím going to try to keep things as low-budget as possible. At the same time, Iím worried about spending a lot of time and effort and not having it last; I donít want it to flake and peel after six months!
So hereís what Iím thinking I should do:
1. (The maintenance guy just power-washed the wall - haven't seen it since, but I'm hoping all the green stuff is gone)
2. Iíll go over the whole thing with a putty knife and scrape away all the loose paint I can find
3. Coat it all with a coat or two of exterior primer, like Kilz.
4. paint the pseudo-stonework with exterior house paint.
Iím not especially concerned about the cracks; I can just work them into the stonework scheme. Itís exposed to rain, but never gets direct sunlight.
Does this sound like a reasonable approach? Iíve never painted an outdoor mural, and Iíve never painted anything even close to this size. Any suggestions you could give would be appreciated!