Chimney Crown Drip Edge

The thinnest part of precast concrete crowns must be at least 2 inches.

Chimney crown drip edge.

Chimney crown and masonry protection. Chimney repair and crown forms. Chimney water proofing. New cap on an existing roman brick chimney.

The chimney crown should extend up to a minimum of 2 5 inches beyond the chimney wall and a drip edge should be provided at the bottom of the overhang part of chimney crown. The crown should be made of concrete only and mortar should not be used. If the form doesn t have a built in drip edge you can cre. The crown should extend at least 2 past the outside wall and contain a drip edge underneath.

Check for a flashing below or a capillary break in the underside of the drip edge. Masonry accessories and cleanout doors. A chimney crown needs a drip edge so that water drips away from the chimney not down its surface. Water can run horizon tally but it can t run horizontally and then back up again.

Do not make the crown flush with the outside chimney wall. Narrow by 15 products. Concrete is stronger and can withstand temperature fluctuations and weather exposure better than mortar. Dean brandhagen chimney services http flue guru wett certified wood heat p.

This prevents water from running along the underside of the cap and getting back to the masonry. Look for an overhang drip edge and where there is none damage to mortar and masonry leading to higher maintenance and repair costs is a possibility. The flashing should extend past the sides of the chimney and form a drip edge underneath the overhang of the crown. Yearly inspections can help prevent costly chimney repairs.

Use concrete for construction not mortar. Chimney repair and crown forms. Chimney cap crown drip edge the brick institute of america bia recommends chimney caps of pre cast or cast in place concrete a minimum of 2 inch thick with a projection of 2 1 2 inch beyond the face of the masonry surround so that water shed from the top will not run down the face of the brick. Chimney crown and masonry protection.