We have just converted our 14 x 28 deck into a screened porch. Would like to put down carpet over our deck boards...hearing conflicting info on what kinds of carpet. The typical indoor/outdoor carpet is either the "grass" look which we do not want or the short pile look. We would really like a carpet that is "berber" like. Since some berber is 100% olefin, was wondering why this couldn't be used. Do you have any suggestions? Any would be appreciated!!