Roof truss with wood preservative or without?

Hello,

my building savings contract recently pointed out to me that I should insist on a version of the roof structure without wood preservatives when dealing with the general contractor. I had never thought about this until he said that opinions are currently divided but he prefers the construction method without them. I have understood that the wood is usually simply better suited structurally and more closed.

So now I have included the execution of the roof structure according to DIN 68800 without wood preservatives in the execution planning. But now I have read again that moisture from the construction phase alone causes unprotected wood to mold.

Now I don’t know what to do anymore. I also haven’t found anything on the internet. Does anyone have a tip?

Regards, REDsonic

Inside or outside?

Now, the issue with construction moisture is neither right nor wrong. It is true that a lot of it occurs, but your attic should already be sealed when the screed drying begins... unless you are planning a [Sichtdachstuhl]...

However, under normal circumstances, no wood preservative is necessary in the interior area.