Transcript
Design
This rectangular island has two appliances up top and two storage areas
below. The structure, made from 6-inch concrete block, is built on a
concrete slab that has been reinforced. The walls are faced with brick and
the countertop is tiled. The total amount of usable counter space is about
4 feet, but the design can easily be adapted if your yard can accommodate a
longer island.
The countertop is substantial looking due to the 3-inch edging and 4-inch
backsplash. The substructure is a layer of 2-inch reinforced concrete laid
over 1/2-inch concrete backerboard. The substructure of the backsplash is 4-
inch-thick block, making it wide enough to hold plates or serving pieces.
Preparation
Before starting any work, buy all of the items in the prducts and materials
list below and have them on hand as you construct the barbecue island. A
professional-looking masonry job calls for exacting work, so you will want
to test fit the grill, burners, and storage doors as you go along to ensure
a good fit. Before purchasing the ceramic tile, calculate how many tiles
you will need for the surface area of the counter and backplash (as well as
the bullnose tiles) and add 10 percent for waste.
1 Before excavating for the footing, check local building codes to see how
thick the slab must be to support the weight of the finished structure. For
this island, the perimeter footing is 8 inches wide by 2 feet deep. Before
pouring the concrete, run the gas line and, if you wish, electrical line to
the area. Then finish the slab.
2 Let the concrete cure for several days before beginning to build the
island's walls. The back and side walls will be solid concrete block; the
front wall will have openings for the doors. Before setting the blocks in
mortar, test fit the grill, cooktop, and doors to make sure they fit.
3 Face the block wall with the brick, applying mortar to the bricks as well
as to the concrete block. Take care to create straight and consistent
mortar lines. When you get to the tops of the door openings, install angle
irons onto that layer of brick and then brick on top of them.
" "
4 Cut concrete backerboard to form the base of the countertop. Make sure
the edges of the pieces come flush with the outer edges of the brick. Then
cut the pieces to accommodate the grill and cooktop and test fit the
cooking units. Using a trowel, spread mortar onto the blocks and brick and
then set the backerboard on top. Check for level at several points. Where
the backerboard is unsupported, place 2 by 4s underneath every foot or so.
Then build a form from 2 by 4s to line the perimeter of the backerboard.
Mix a batch of sand-mix concrete and layer it on top of the backerboard to
a thickness of 2 inches. Smooth the slab with the trowel.
5 Allow the concrete to cure and then remove the temporary supports and the
2-by-4 form. Place the tiles on the concrete, make whatever cuts are
necessary, and then set the tiles in thinset mortar that has been
reinforced. The bullnose tiles line the front and side edges and go on top
of the backsplash. When the mortar has hardened (after a day or so), apply
grout between the tiles.
6 Set the grill and the cooktop in place and make all the connections to
the gas line. Then install the storage doors. Finally, caulk around the
cooking units and the doors to make them watertight.
Products & materials list:
Gas grill
Gas cooktop with two burners
Doors for two cabinets
Gas line, shutoff valve, and connections
Concrete blocks
Rebar
Mortar mix
Brick manufactured to look used
3" angle irons
1/2" concrete backerboard
Sand-mix concrete
2x4s
Countertop tile
Reinforced thinset mortar
Grout
Silicone caulk