How To Fix Roof Flashing Around Chimney

Clean any leaves or other debris out of the gap between the flashing and chimney.

How to fix roof flashing around chimney.

Roof shingle over step flashing. 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. Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing.

Place a small drop of caulk where the roof and chimney meet at the chimney corner. Chimney flashing is usually found under the shingles at a 90 degree angle. To repair loose roof chimney flashing. Http amzn to 2ajekf4 visit us at.

Use special masonry caulk to seal the joints between the flashing and the chimney. Step flashing on roof peak. Set the flashing aside. Fit an 8 inch 20 3 cm piece of square step flashing over the chimney s front corner.

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. Http amzn to 2cjy6ev get the reinforcement fabric here. Use a chisel to remove any hardened roofing cement. Leaks around fireplace chimneys are common and can be hard to identify the source.

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. 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. The only way to repair flashing is to replace it. Pound the flashing into the grooves and fasten with the drive in expanding anchors.

Place the step flashing over the caulk and onto the chimney. Hammer 2 roofing nails into the flashing and roof. Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right. Applying roofing cement to gaps between metal flashing and the chimney.

Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in.