Tuckpointing, Done to Match What's Already There

Tuckpointing is the process of grinding out failed mortar joints and packing them with fresh mortar, and on older homes that means matching what's already on the wall, not just filling a gap. We work on the brick ranches, bungalows, and Cape Cods that make up most of the housing stock in Lincolnwood, Niles, Morton Grove, and the near-north suburbs of Chicago, a lot of it original mortar from the 1940s through 1960s.

Why the joints fail before the brick does

Brick is tough. Mortar is the part built to give way first, on purpose, since original construction, mortar is meant to be softer than the brick around it so it absorbs seasonal movement instead of the brick cracking. The tradeoff is that it wears out. Chicago's roughly 40 to 50 freeze-thaw cycles a winter push water into every hairline gap in a joint, and each freeze expands that gap a little further. A joint that looked fine five winters ago can be crumbling under a fingernail now. Left alone long enough, the brick itself starts to spall, which turns a mortar job into a brick-replacement job.

The job, step by step

1. Walkaround and firm quote. We look at every affected wall, note where the mortar has failed versus where the brick itself needs attention, and quote the whole job before starting.

2. Grinding out the old mortar. Failed joints get ground out to a consistent depth, roughly three-quarters of an inch, without chipping the surrounding brick edges. This is where rushed jobs go wrong.

3. Mixing to match. Pre-1970 homes in this area were built with a softer, lime-heavy mortar. Repointing with a hard modern mix on top of that original mortar traps moisture and speeds up brick damage instead of stopping it, so we match the mix to the wall, not just to the color.

4. Packing and tooling the joint. New mortar goes in and gets tooled to the same profile as the joints around it, concave, struck, or raked, so the repair reads as part of the wall instead of a patch.

5. Cure time. Mortar needs a temperature window of roughly 40 to 90 degrees to cure properly. That's why the working season here runs April through October for most jobs; winter work is possible but needs a heated enclosure.

What it costs

Chicago-area tuckpointing runs $12 to $25 per square foot, in line with national ranges of roughly $9 to $25, with labor typically billed at $50 to $100 an hour. Small spot repairs, a handful of failed joints around one section of wall, usually run $50 to $500. A full wall of about 500 square feet typically lands between $6,000 and $12,500. What moves the number: total square footage, how deep the old mortar has to be ground out, scaffolding or lift needs above the first story, and whether we're color-matching an older lime mortar. We quote the actual wall, not a phone estimate.

Do you need a permit?

No, not for routine tuckpointing, in Lincolnwood, Niles, or Morton Grove. Where each village draws the line is different once the scope grows: Lincolnwood requires a permit for chimney work beyond tuckpointing and for brick or stone veneer replacement; Niles requires one once a job becomes a structural chimney rebuild; Morton Grove requires the mason on any permitted job to be licensed and bonded with the village. If your project is chimney-specific, our chimney repair page covers those permit lines in more detail.

When tuckpointing isn't the fix

Not every crack is a mortar problem. A stair-step or horizontal crack running from the corner of a window is often a sign of a rusting steel lintel pushing the brick above it outward, a different repair covered on our lintel replacement page. And a badly leaning or heavily spalled chimney usually needs more than repointing; see chimney repair for when a rebuild is the honest answer. We'll tell you which one you actually have before we quote a fix.

Frequently asked questions

What's the difference between tuckpointing and repointing?

In everyday use around here the words get used interchangeably, and that's fine. Technically, repointing is removing and replacing failed mortar; tuckpointing is a two-color technique that adds a thin raised line down the center of the new mortar to mimic tight, uniform joints. We match whichever look your wall was originally built with.

How long does tuckpointing last?

Properly done repointing on a well-built wall typically holds up for 20 to 30 years before it needs attention again. How long yours lasts depends on the mortar mix we use, the brick underneath it, and how much freeze-thaw exposure that particular wall face gets.

Can you match old mortar color and joint style?

Yes. Homes in Lincolnwood, Niles, and Morton Grove that predate 1970 usually have a lime-heavy mortar mix and a joint profile that modern portland-cement mortar won't match if we're not careful. We test and match color and joint style before starting so the repair blends in instead of standing out.

Is tuckpointing a DIY job?

Small hairline cracks, maybe. Anything beyond that gets risky fast: mixing mortar too hard for the surrounding brick accelerates damage instead of stopping it, and working above the first story means fall protection and proper staging. Most of what we get called out for started as a DIY patch that didn't hold.