In a newly purchased house we've just pulled up the carpets in the attic/loft in preparation to lay food flooring. The floor needs some levelling and, in addition, there is a 6 x ? beam running across the floor which protrudes at least 1/8" above the rest of the floor. So how should I go about levelling this floor?
A) Pull up the existing particle board and install shims on the crossbeams and then re-lay new particle board. The shims would be appropriately cut to level the floor as well as to bring it up to the level of the protruding beam.
B) Use a levelling compound to level out the existing floor as best as possible then lay 1/8" fiber board or plywood to bring the floor up to the level of the protruding beam.
As this is a project I would (ideally) like to do myself, option B seems like the most appealing.
Thanks in advance