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Process & What to Expect

How long does repointing a chimney take?

Quick answer

Most chimney repointing jobs take one to three days from start to finish, though the exact time depends on how much of the chimney needs new mortar, how the crew accesses the roofline, and the weather. A small touch-up on a few deteriorated joints can wrap up in a single day, while a full re-point of an entire chimney stack usually spans two to three days including cleanup.

Repointing means grinding out the old, failed mortar to a consistent depth, usually around three-quarters of an inch, and packing fresh mortar back into the joint in thin layers that are tooled to match the original profile. That grinding step takes longer than most people expect, since rushing it can chip brick edges or leave old mortar behind that keeps the new mortar from bonding. A careful crew works section by section rather than racing across the whole chimney at once, checking each finished joint before moving to the next.

Access adds real time on a steep roof or a chimney that sits above a second story, since scaffolding or roof jacks have to go up and come down safely before and after the work. Weather matters too: mortar needs air above about 40 degrees to cure properly, so a stretch of cold or rainy days in the Blue Ridge foothills can stretch a two-day job into a longer window while the crew waits for a workable stretch.

Chelo's Brick & Stone also uses the time on the roof to check other parts of the chimney while access is already set up, like the crown, the cap, and the flashing where the chimney meets the roofline, since those are exactly the spots that let water in and speed up mortar failure all over again. Catching a cracked crown or an open flashing seam during a repointing visit can save a second trip up later, which is part of why the estimate looks at the whole chimney rather than just the joints that prompted the call. A homeowner in Hillsville, Galax, or anywhere else on the I-77 corridor who's waited a season or two to address failing joints often finds the crew recommends fixing a related issue at the same time, simply because the scaffolding is already up.

Frequently asked questions

Does the fireplace need to be out of use during repointing?
Not usually. Most repointing happens on the exterior chimney stack above the roofline, so you can typically still use the fireplace once the mortar has had a few days to set up and there's no active work happening overhead.
Can repointing be done from the ground without scaffolding?
Lower sections near the roofline sometimes can, but most chimney work requires roof access, scaffolding, or roof jacks to reach the stack safely and get the joints tooled correctly without rushing.

Keep reading

More on this from Chelo's Brick & Stone.

Service

Chimney Repair

See how we diagnose and repair chimneys in the Blue Ridge foothills.

Glossary

Repointing

What repointing means and how it differs from a full rebuild.

Answer

How messy is a repointing job?

What to expect from dust and debris during the work.

Have a masonry question of your own?

Chelo's Brick & Stone serves Hillsville, Galax, Wytheville, Fancy Gap, and Independence, VA. Call for a straight answer and a free on-site estimate.