Flat Roof Leaking Around Chimney

That part of the flashing is very vulnerable to leaks.

Flat roof leaking around chimney. The mortar grout is usually the first to go. Oh yeah don t use the fireplace with your chimney covered with plastic and this is not how to fix a leaking chimney. The flashing on a chimney is one of the biggest reasons for roof leaks. Mortar cracks chimney flashing and crown deterioration on a chimney will contribute to leaks on a flat roof.

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. Wrap the chimney with plastic and tape it securely. All chimneys need maintenance over time. Applying roofing cement to gaps between metal flashing and the chimney.

Most of the time the metal flashing has to be inserted into a slot into the face of the brick. Repairing the flashing on a chimney. To perform a proper chimney leak repair is crucial for any flat roof. 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.

Instead sealing the chimney crown with a liquid sealant we used a rubber membrane. Sometimes a chimney may start to leak only after a very wet series of storms.