I had to cut mine a little to work around some beams on my porch. I didn't really want to do this in case it would "roll" up around the beam, but it seems as though this is not going to be an issue. It was easy to cut with regular scissors or a utility knife. It seems like it drained well after a storm. I was worried about this because I don't want it to hold water on my wooden porch and rot the wood out. I treated the wood first with decking oil. It's only been on the porch for about a week, but so far, so good.