A typical measurement specified by a lot of makers is ≤4% for products and solutions which aren't built to be moisture tolerant. Merchandise which have a high moisture tolerance is usually specified with readings as significant as 6%. Chemical DPCs are injected into your partitions to make a h2o-repellent barrier. https://lorenzolxaeh.uzblog.net/a-secret-weapon-for-damp-46229117