Hi - i have recently started plaster boarding a house i am renovating as much as possible myself. I have boarded but i do have some gaps between some boards in tight spaces, sometimes approx 1-2cm and at most approx 4cm. I also have some damaged boards where in fitting ceiling boards the edges have broken and crumbled. I have done a bit of research and read that these can be bonded or filled with expanding foam but i wanted to come and post the query on this forum to get some professional advice. Can anyone advise? I cant upload a pic because the image folder is full apparently?!