Just to keep my mind fresh and my blog up to date I thought I would include some definitions of some more paint disasters waiting for the uninitiated and unprepared.  

 
Main Entry: lai·tance 
Pronunciation: \ˈlā-tən(t)s\
Function: noun
Etymology: French, from lait milk, from Latin lact-, lac — more at galaxy
Date: circa 1902

: an accumulation of fine particles on the surface of fresh concrete due to an upward movement of water (as when excessive mixing water is used) 



Laitance creates an unstable surface that paint will not adhere to.  The only solution is to give the concrete time to cure after being poured.  This often becomes an issue with floors that have had concrete skim coats applied.

Per Gliden - "Saponification, the formation of water-soluble soaps, is most often associated with the chemical attack of
an oil-based or alkyd paint by a highly alkaline masonry substrate. Masonry includes new concrete, tilt-up
slab, stucco, plaster, mortar, etc. Alkyd and oil-based paints contain esters that react by hydrolysis and
saponify with alkalis present in new masonry to form water-soluble soaps (PVA latexes can also be
saponified, although to a lesser degree). The alkalinity may be concentrated at the paint/surface interface
by moisture migration from the original mix with water or from external moisture ingress sources. At this
point, the paint film is turned into a soap by this chemical process and becomes soft, sticky and watersoluble.
This condition may be mistakenly reported as poor drying or that the paint is tracking, picking up
dirt or peeling."  

Yet another reason to listen to your painter when they advise against painting new concrete or recommend efforts to assess ph and modify it if necessary.

Finally delamination is pretty much what it sounds like - paint peeling off in sheets.  But why and where?  Often occurs when a substrate was not deglossed.  Can also be caused by the sheer weight of multiple coats of paint (like ten).  Some more modern paints like Sherwin Williams Duration 'bites' so hard into old paint that it can rip the underlying layer off the wall!  It pays to know what to use where.  Period.