Expert: Bruce E. Johnson - 5/4/2009

Question
Bruce,
I have a back garage wall (2x4) which I want to add a 36" door. There is 1 cinder block layer above slab then of course the sill plate (2x4). First, will you confirm it is OK to remove sill plate for door and sit door on directly on cinder block? Second is it perferred to remove the block so door will be at level of slab? If so what do I need to do to prep area under door where block was removed? Thank you for your help.
Jeff

Answer
Hi Jeff, I would remove the masonry down to the slab and set the door at that level.  Otherwise you will be wishing you did when you want to move something through the door that is heavy or on a moving dolly.  To do this, simply remove the masonry to a point level with or slightly below the slab and then fill the remaining masonry with concrete, smooth it out and then when it is set up install your door and threshold. I like to put a good heavy bead of caulking under the door threshold as I install it.  This helps keep water out. I hope this information helps feel free to write again regarding this or other matters, sincerely bruce e johnson..bejohnsonconsulting.com