My Kitchen sink cabinet is on and outside wall of a brick 2 story. The previous owners obviously have done some work on the pipe that goes to the ouside faucet under the sink. By doing this they removed the back panel of the cabinet. They stuffed some pink insulation and tried to seal things off, but it did not work. There is a tremensous amound of cold air coming from under the sink, and it is pretty drafty in the kitchen and it makes the tile floor cold. It seems like it would be difficult to put a back on the cabinet with it in place. My question is...Is there a way to make things more air tight under the sink and create a more comfortable enviornment that would not be too labor entensive? I have sprayed some foam insulation around the pipes to the outside, and that helped a little, but its still pretty drafty!!! Sugguestions?