How To Build A Brick Fireplace Inside. Build the firebox itself with nine inch refractory mortar and firebrick laid on edge. Brick fireplace ideas often hinge on a great mantel.
He draws a line along the back to establish the 20 in. The large 8 by 8 cut of wood makes a perfect statement piece to hang over a fireplace. How to build an indoor brick fireplace step 1.
Mike begins by snapping a chalkline to mark the front face of the fireplace.
Use the glass door frame as a template for the sizing. Mark the dimensions of the fireplace against the wall and the footprint of the fireplace on the floor using. It can really make or break your brick fireplace look. A prefab fireplace generally has a firebox of cast refractory panels and usually some metal is visible in the room all around.