Hi Steve, welcome to the forum. All your questions can be answered here, try using the search bar on the home page ( little magnifying glass) there will be an archive of hundreds of threads that will help you. Try this for your first read..I'm Steve. I've got a couple of what I hope are smallish problems with damp & blown plaster and by posting and asking questions on here and hopefully getting good advice I'm hoping to stop them becoming bigger problems. Thanks in advance.