How To Patch Floor On A Fireplace

Cut along the scribe mark with a jigsaw or bandsaw.

How to patch floor on a fireplace.

Well as i feared after the burn i cleaned the ashes out and discovered the repair had bubbled up probably from residual moisture in the repair boiling up and creating steam bubbles. After some drying time clean up the joint lines for a smooth finish. Place the board next to the fireplace. Start by scrubbing excess ash and dust from the walls of the fireplace to expose the brick.

Since the repair is on the floor of the firebox i wasn t sure how it would work with the ash coal bed on top of the repair. Fill the gap between the board. Brush and vacuum debris and dust from hearth base. Use a compass to follow the shape of the fireplace and scribe the board.

Then clear any loose mortar from the firebox floor and walls. If the brick is crumbling have it replaced with a new firebrick embedded in refractory mortar. Use demolition hammer with a chisel bit to chip away old hearth and the mortar underneath as shown. Repair the joints using heat resistent mortar.

Http amzn to 1o15lhr how to clean your chimney. If the mortar joints in a firebox are crumbling chisel out the old mortar and replace it with new mortar. If a brick in a masonry fireplace cracks you need to patch it.