Diy Chimney Crown Repair

Build your cap frame use 2x4 lumber to make your new concrete form.

Diy chimney crown repair.

A chimney crown is a concrete cap that tops the masonry walls of a brick chimney to shed water and seal the chimney s flue to the masonry. It doesn t have to be that way. Diy chimney crown repair. Large cracks on the chimney crown between 1 8 and 1 inch in diameter can be repaired with pre mixed cement patch or mortar.

A cracked chimney crown or spalling bricks can easily cost 1 000 to repair. By simply sealing the bricks and the crown and adding a chimney cap you ll greatly extend your chimney s life. Inject the repair mix into the crack with a squeeze bottle or force into the crack with a putty knife. And if left untreated the damage can accelerate quickly and cost you upward of 3 000.

To avoid bonding problems between old brick and new concrete be sure to clean off all dust and debris from the old brick. The crown is the part that acts as the protector of the chimney and you can easily repair it at home without incurring great expense. Chip off old mortar from the existing chimney crown but using a hammer chisel and wire brush. Concreting cracks if you do not want to make a new crown you could simply fill up the cracks that are visible.

A solid crown in good repair prevents water damage from. I show you all the steps i used chipping out the old crown cutting plywood if you are worried about moisture use 1 2 hardie bac.