Umbar bricks are crafted on the Umbaric crafting table from four stone blocks, which yields four bricks. Additionally, these can be smelted to produce cracked Umbar bricks, both of which can then be made into slabs, stairs and walls using regular recipes on the Umbaric crafting table.
In the renewed version only, these bricks can be made with either stone or sandstone (in any combination). There are also mossy variants, made and used in the usual ways.
Two carved variants can also be crafted, one with Umbar bricks, the other with Númenórean Bricks.