As above, I'm rendering a garden wall this weekend!
I'm quite adept at plastering however I have never worked on exterior walls.
Area coverage is approx. 3m sq. On to bare brick (about 100ys old). I've already patched holes etc with a ready mix (just add water) mortar.
What sort of mix, sand & cement will I need? Should I add lime? What coverage will I get with a standard bag of cement? How many bags do I need?...so many questions!
Any hints/tips would be greatly appreciated!


