Flat Roof Leaking Around Chimney

If your roof still leaks it is not the chimney.

Flat roof leaking around chimney.

Sometimes a chimney may start to leak only after a very wet series of storms. All chimneys need maintenance over time. Instead sealing the chimney crown with a liquid sealant we used a rubber membrane. That part of the flashing is very vulnerable to leaks.

Mortar cracks chimney flashing and crown deterioration on a chimney will contribute to leaks on a flat roof. Oh yeah don t use the fireplace with your chimney covered with plastic and this is not how to fix a leaking chimney. When a roof leaks the problem is often due to leaks in and around the metal roof flashing that protects roof edges valleys and the junctions between roofing and obstructions such as chimneys dormers and vent pipes. The mortar grout is usually the first to go.

Applying roofing cement to gaps between metal flashing and the chimney. Wrap the chimney with plastic and tape it securely. Expert advice on how to repair roof flashing and chimney flashing prevent ice dams and solve other roof flashing problems. The flashing on a chimney is one of the biggest reasons for roof leaks.

Most of the time the metal flashing has to be inserted into a slot into the face of the brick. 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.