If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
Yes, you mortar the first course of blocks, because your slab is unlikely to be flat enough to support the blocks flat, without rocking. In addition, you can make small changes for level at this point.
It is recommended that you motar the first course of bricks but I did not. My slab was not perfectly level but the bricks set on the slab ok so I just filled them with the concrete. I then made sure my hearth was level..It would have been easier if I had leveled the blocks but my results came out well.