On Feb 29, 9:58*pm, sherry wrote:
told by basement contractor i need 1 b4 damp basement walls r
painted...what is best size 4 "half" basement? * ive seen 30, 45 and
60 pt..mostlt LG...any advice? * sherry

You make no logic, 1b4 r means nothing as does your post. A good
digital unit reading 50-55% is OK especialy in winter. Get a different
tech, one with at least a 4th degree in math, who can add and
subtract.