1. what method would you suggest for levelling? should we take the opportunity with replacement of the subfloor to level with shims between plywood and joists? should we "shave" a little off the higher joists instead? or is the former a more reliable and easier way?
2. how in the heck do you read a level? we have a big orange one. we know that when the bubble is outside of the middle, the floor's not level. but HOW out of level, I'd like to know. what does it mean when the bubble goes out of the double rings to the right or left all together, as opposed to going into the double rings, and stopping there? I've looked everywhere for the answers!
3. when we do lay the cementious board, can I just affix it to the plywood with liquid nails and be done with it, or must I also screw it into the plywood and, ideally, into the joists as well? I'd like to avoid the extra work of filling the screw-dents with thin set.
[This message has been edited by girldog (edited February 22, 2001).]