I already suspect that I'm not going to like the answer, but I'll ask anyway.
My home has a screen porch, and in this section, the brick facade is starting to fall away from the house. It was caused, I believe, by continual water leaking onto the ledge– the porch is covered by a flat roof that was not properly attached to the rest of the roofing system, and water had been getting under the connection, and that water would drip onto the ledge. (I think this because it is not a problem around the rest of the house, and I can also see water staining on the wooden panels directly above the ledge.) That problem (which did not happen on my watch) has been fixed.
Anyway, I can think of how to jack the facade back into place, but re-attaching it seems like a problem. I know that when it was originally built, the facade was attached to the studs of the wall between rows of brick. Because it has pulled away slightly, I can tell where the studs are, and it wouldn't be too hard to anchor the bricks back. However, I'm concerned that the type of fastener that I need to hold the weight of the bricks would compromise the strength of the 2 x 6 studs.
Any direction a professional could give me would be much appreciated.
Best Answer
The idea of pushing a brick veneer wall back onto its bearing surface is really not a good idea. Besides water will not push it off, something else did in my opinion, like wood that swelled up from the leak, but that will be minimal. I would still be more concerned about the water around the framing behind the brick. If the brick ain't fallen yet, it may not. But it may need to be taken down to repair the band joist, plate, perhaps. Then set the brick back with proper waterproofing in place so when water gets behind the facade it won't matter. FWIW, in a building science seminar I attended, the speaker Joe Lstibureck, discovered that brick allows 10 percent of the water that hits/saturates the surface to pass through its thickness to the what is a hopeful moisture barrier behind the brick, in front of the framing...