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.

Diy chimney crown repair.

Watch as i remove an old cracked chimney cap or crown made of cement and pour a new one in place. 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. 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. 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. Diy chimney crown repair. Build your cap frame use 2x4 lumber to make your new concrete form. Curing time typically ranges from four to six hours but it may take longer for wider cracks.

And if left untreated the damage can accelerate quickly and cost you upward of 3 000. Large cracks on the chimney crown between 1 8 and 1 inch in diameter can be repaired with pre mixed cement patch or mortar. Inject the repair mix into the crack with a squeeze bottle or force into the crack with a putty knife. To avoid bonding problems between old brick and new concrete be sure to clean off all dust and debris from the old brick.

A solid crown in good repair prevents water damage from. A cracked chimney crown can lead to water infiltration in.