f-pNo
2016-01-04 16:45:25
- #1
Hello community.
We built a house in 2015 and shortly after, after a "reasonable" amount of time, we covered the attic floor with OSB boards (including cross battens). Now, in hindsight, you read that OSB was not the best choice and it can lead to mold formation, but I have no desire to tear everything out again. It is an unheated attic. You could now cut open some spots to check if mold has formed, or... that's the question now: Use a moisture meter? I have an electronic one with a metal ball on the front that measures moisture content. I have already measured in several places up there and all values were good... so dry. Would a measurement with it also be possible so that without causing damage, damp spots can be detected from which an increased risk of mold could be derived immediately. OR is that not advisable and you SHOULD unscrew the board and check??
Thanks for your opinion
Hi,
somehow I don't quite understand the question.
What is a "reasonable time" for you? We were once given the tip to wait about 1 year before laying the OSB boards. We stuck to that. Additionally, like , we left a small surrounding gap (it is also very difficult to lay the OSB boards perfectly flush in the valleys). We left about 5-10 cm gap on the sides and 10-15 cm at the gable walls.
Construction of the upper floor ceiling in our case (from below) – no guarantee for accuracy: plasterboard – counter battens – vapor barrier – ceiling joists. Insulation goes between the ceiling joists.
An acquaintance even said: If you have the vapor barrier in place, moisture shouldn’t really penetrate from below. If that is correct – where should the moisture come from?