Please, if your are going to ask questions from the pros, give us all the information possible. We can not see your problem and incomplete information leads to bad or incomplete answers. If you ask how to paint siding, tell us what type of siding it is, not just that it is cedar. Is it smooth cedar lap. rough cedar lap, cedar shake, or cedar rake siding? Also include how old it is and how much paint build is on it. Quality of existing paint is also very important. Please also include the condition of the siding. There is a lot of lap and T-111 siding made of press board type material that has been recalled out there. If you missed the recall, there some ways to prolong this material before you must replace it. I hope that this helps you in asking the right questions.