How To Fix Roof Flashing Around Chimney

Set the flashing aside.

How to fix roof flashing around chimney. Bend a piece of cap flashing to fit around the top corner of the chimney and add the cap flashing across the back of the chimney. Place the step flashing over the caulk and onto the chimney. To repair loose roof chimney flashing. Place a small drop of caulk where the roof and chimney meet at the chimney corner.

Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Chimney flashing is usually found under the shingles at a 90 degree angle. Http amzn to 2ajekf4 visit us at. Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right.

Chimney roof leaks are usually caused by gaps or cracks between the metal flashing used to join the chimney to the roof and the chimney. Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing. Use a chisel to remove any hardened roofing cement. Use special masonry caulk to seal the joints between the flashing and the chimney.

Fit an 8 inch 20 3 cm piece of square step flashing over the chimney s front corner. Roof shingle over step flashing. Clean any leaves or other debris out of the gap between the flashing and chimney. Pound the flashing into the grooves and fasten with the drive in expanding anchors.

Before going up on the roof to do the replacement it is recommended that measurements are taken around the chimney so that the flashing can be ordered. Use masonry nails or screws to reattach the flashing tight. Apply a generous amount of roofing cement behind the flashing. It is attached to one side of the chimney and one side on the roof.

If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend. Applying roofing cement to gaps between metal flashing and the chimney. Leaks around fireplace chimneys are common and can be hard to identify the source. Bend the corner flashing tightly around the corner.

Step flashing on roof peak.