Exterior murals are painted on most every type of surface including cement, brick, stucco, wood, glass and others.  We even have a special paint that can be used underwater in your swimming pool or pond and can handle chlorine and other chemicals to make an exciting look at the bottom your pool.
The size of your exterior mural is only limited by size of the wall. We have done murals as small as 10 square feet all the way to a huge 23,000 square feet, and everything in between.