I am considering the application of an artificial stone wall veneer onto a poured concrete wall. The wall is flat with no protrusions or other which might aid in adhesion. I do not know if any release agents were added to the forms when the wall was poured. Age of the wall is less than 15 years.
What is the best method to prep the surface to get the best adhesion and is there a best mortar for use in this manner? I have done a lot of drywall and other concrete work, but nothing to do with block or mortar so this is somewhat of a new area for me. The wall is about 9 feet high and 15 feet long and flat with no corners with a concrete floor - all bare an never painted.
How should I prepare this surface and what should I use for mortar here? I want it to look as natural as possible so do not want to use any caulk like adhesives etc. if possible. Any other tips I might find of use?
EDIT: This is an interior wall, thus no weathering and has never been painted or otherwise surface treated.