Blender tutorial on Texture Mapping - it will make roof textures on a building all the same size :)
https://www.youtube.com/watch?v=obB9T3jXlak
Look for other tutorials by BornCG
Plenty of tutorials on UV mapping in 3ds Max also
https://www.youtube.com/results?search_query=eds+max+UV+mapping
Mapping this way allows fun stuff: vines growing on the side of a house; sign on wall; stains under a window; etc.
Unique stuff that makes your building look real rather than a flat texture with no shadow detail. Also allows textures
to be sized correctly.
Good information. Thanks. :D