Loose crumbling mortar between the brick joints of a chimney indicates its exposure to weather extremes have taken its toll so it’s a good idea to inspect it once a year. Tuckpointing is the process of repairing mortar brick joints and it’s an important preventive maintenance project. If mortar is left unchecked and continues to disintegrate, you'll need expensive replacement work down the road, so when you see signs of loose mortar, don’t hesitate to fix it or get it fixed.

Tuckpointing is an important preventive maintenance project. Photo courtesy of Gene Hamilton/TNS