Hi all. I drilled 25mm holes through the joists under the bathroom but I will need arms like a gorilla to pull the 22mm pipe through. I tried sanding the edge of the pipe and vaseline in the holes but still too difficult. The difficulty is caused by the holes not being horizontal. I think I will have to block the holes. The only method I can think of is 25mm (perhaps sanded or turned down to 24mm) dowel glued with Araldite.
Then I will cut slots for the pipework.
Am I doing the right thing or is there another technique I could try?
Arthur