Steve spirit is liquid damp proofer which is pressure injected into brick work and is soooooooooooooooooooo old school and carrys loads and loads of problems. The new style which isnt readily available is paste which is peice off piss to do

rising damp will only tract up a wall around 1METRE, damp in corners of rooms etc is poor air circulation and the moisture is stuck in the corners with stagnent air, other damp is either pourous outter leaf which is tracking across wall ties or a leave usually