So if I screw squared timber into the roof structure or floorboards onto the squared timber, I prefer to pre-drill. I definitely do not take the risk of splitting a rafter in my roof structure.
The 50mm ventilation is stated like that in my handover documentation for the house. It would be stupid if I deviate from that. The point is that moisture that may arise in a special situation can escape.
And to end the debate for me. Sure, the professional can sometimes do it better than me and faster. But whether under increasing pressure he really does it better... and not just faster. I sometimes have my doubts. Given my income situation, it looks like I have to work a good 3, almost 4 hours for a craftsman’s hour at 70, 80 EUR. In my case mostly field service, so the whole day or even the entire week, sometimes a whole month away from home. You really reconsider if you can’t do it yourself.
And it doesn’t have to be 100%, especially not if you do it yourself. This standard is relatively new, I claim it only came into fashion in my generation (born 1983), rather later.
Everything has to be immediate. If the kitchen gets 2 ovens, they have to be there at move-in, otherwise please install blanks. Absolutely no inserts are allowed to remain empty for several months, etc.
Don’t get me wrong. If you can afford it, please. That’s what craftsmen live on. But most just can’t afford it. That’s why the loans are spiraling out...
That’s going to blow up in "our" faces...