Stucco repair in Huntsville, Alabama.
Cracks, holes, impact damage, and walls that have been patched once already — on traditional hard‑coat stucco, on one‑coat systems, and on older walls nobody has looked at properly in years. Filling a crack is the easy half. Reading it correctly first, and matching the finish when you close it back up, is what decides whether anyone can tell you were there.
Reading a crack
Three kinds of cracks, and what each one is telling you.
Nearly every crack we get called about falls into one of three patterns. The pattern matters far more than the width. Walk the wall in low, raking sun — early morning or late afternoon — and you will see a pattern that is invisible at noon.
| What you are looking at | What it usually means | How urgent |
|---|---|---|
| Fine cracking spread across the whole face of a wall. Hairline — about the width of a hair — in a web, a map, or a pattern like crazed pottery. It covers an elevation rather than running in one line. | Shrinkage, most of the time. Finish coat that went on thin, was mixed too wet, or dried too fast in sun or wind, then kept moving with the seasons. The wall behind it is usually sound. | Low. Cosmetic on its own. It does hold water at the surface and collect dirt and mildew, so it is worth closing — but it is maintenance, not an emergency. |
| Diagonal cracks running off the corners of windows and doors. One clean line at roughly forty‑five degrees away from the corner of an opening, top corners first as a rule, and often on the same corner of more than one window. | Stress concentration. An opening is a hole in the wall, and load and movement concentrate at the corners of a hole. Usually a control joint that was never put in, corner reinforcement missing behind the finish, framing shrinkage, or movement below. | Medium, and climbing. These open and close with the weather instead of staying put, and they sit right over the flashing at the head and sill — which is where water gets behind a wall to begin with. |
| Straight cracks in a regular, repeating pattern. Evenly spaced vertical or horizontal lines, sometimes squaring off into a grid. The spacing gives it away: sixteen or twenty‑four inches apart, or lining up with the joints between sheets of sheathing. | The wall is telegraphing what is behind it. Even spacing follows framing members, fastener lines or panel joints — so the problem is in the assembly, not the finish. Lath that was not pulled tight, sheathing joints that were not broken up, or a substrate that moves. | High — for diagnosis. The crack may be narrow, but it is a report on how the wall was built. Skinning over the face without opening a section to find what is moving is the surest way to see the same lines again. |
Width on its own is a weak signal. A wide crack inside a shrinkage web is often less serious than a narrow one running off a window corner. What matters is the pattern, whether it changes between summer and winter, and whether somebody has filled it before. A crack that was repaired once and came back on the same line is not a crack problem — it is a cause problem, and it belongs in the second tier below.
The part people ask about first
Matching happens on the wall, not out of a catalog.
People are right to worry about this. A repair can be structurally perfect and still be the first thing a visitor notices from the driveway. Stucco finishes are not products off a shelf — they are made by hand, on site, by a particular motion at a particular moment in the set. Matching one means reproducing the motion.
So the match gets made against your wall, with sample boards: small panels finished with different mixes and different handling, held up to the existing surface in daylight and judged dry. Wet stucco lies about its color. The board that disappears against the wall is the one that goes up.
The textures we are usually matching
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Sand or float finish
Aggregate worked into the surface with a sponge or a rubber float. The grade of the sand and how hard it is floated decide whether it reads fine, medium or coarse. The most common finish around here, and the one where a wrong sand grade shows up fastest.
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Dash
Thrown at the wall and left alone — off a brush or out of a hopper gun. Light, medium or heavy depending on the mix and the air pressure. Matching a dash finish is matching the throw more than the material.
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Lace, or lace and skip
Troweled on, thrown back over in patches, then flattened while it is still soft, leaving raised islands with smooth tops. Very common on houses built through the 1980s and 1990s.
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Knockdown
Sprayed on, left until the shine goes off it, then flattened with a trowel. The timing is the texture. A minute early and it smears; a minute late and it tears.
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Skip trowel
Thin material dragged with a loose, flat trowel so it skips across the surface and leaves low broken plates. Reads finer and flatter than lace, and it is easy to overdo.
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Smooth, or Santa Barbara
Steel‑troweled flat in a fine finish, usually with a slight hand‑worked undulation to it. The hardest one of all to patch, because there is no texture to hide a joint in.
Color is the second half of it
Two walls of the same house rarely hold the same color. South and west elevations take the most sun and fade first, so the north side is not a fair sample for a patch on the west side. If the wall carries integral color in the finish coat, the match is mixed into the material. If it has been coated or painted at some point — and most walls past about fifteen years old have been — the match is made in the coating instead.
Where a whole elevation has faded, chalked or crazed, patching to match a color that is itself uneven is often the wrong answer. Recoating the elevation with an elastomeric acrylic coating is cleaner: it stays flexible, so it bridges hairline cracks instead of splitting over them the way ordinary house paint does; it sheds water while still letting the wall dry outward, so nothing gets sealed in; and it holds its color and resists mildew in this humidity. Do that and the whole wall is one color again, with nothing left for the repair to be compared against.
The standard we work to is not that the patch is strong. It is that you cannot find it. A structurally perfect repair in the wrong texture still reads as a patch from the street, and from the street is where everybody sees your house.
Where you probably are
Three levels of stucco repair.
Almost every wall lands in one of these three. Working out roughly which one you are looking at makes the first phone call a lot shorter — and tells you whether this is a this‑year job or a this‑week one.
Cosmetic hairline cracking
The wall is sound, the cracking is shallow, and nothing about it has changed in years. Cracks get opened slightly so the filler has something to grip, filled with a flexible patching material, re‑textured into the surrounding finish, and the elevation gets coated so the repair has no edge left to show.
Cracking that is active, or that came back
The tell is history. It was filled before and it opened again in the same line, or it visibly changes width between summer and winter. Something is still moving or still wet, and it will keep working through anything laid over the top of it. Here the first job is finding the cause — a failed sealant joint, flashing at the roof‑to‑wall line, a control joint that was never cut, a weep screed buried by a flower bed — and the repair gets scoped after that, not before.
A failed section
It sounds hollow when you knock on it, crumbles at the edge of the crack, has come away from the wall, or is soft to press. This one does not get patched. The failed area comes off back to a sound edge, what is behind it gets looked at and replaced where it is wet or rotten, new lath and water‑resistive barrier go back where they belong, and the wall is rebuilt in coats — scratch, brown, finish — then textured into what is already there.
Straight talk
A patch does not fix whatever fed the crack.
Stucco is a wall covering. It cracks because something made it crack, and in twenty‑five years that something is nearly always movement or water — usually water.
Water gets in at the edges, not through the middle of a wall: a failed sealant joint at a window, a missing kick‑out flashing where a roof runs into a wall, a weep screed buried under mulch so the bottom of the wall has no way to drain. Once water is behind the stucco it has nowhere to go, and in this climate a wall takes water on faster than it can give it back.
Fill the crack and you have covered the symptom for a season. The wall keeps getting wet, the sheathing behind it keeps softening, and the crack reopens on the same line — which is how most people end up calling somebody a second time about the same window.
So before we scope a repair we want to know what caused it. Sometimes the honest answer is nothing much: shrinkage from twenty years ago that has been stable ever since, and a straightforward repair is the right call. Often it is one detail on the outside of the wall that takes an hour to correct and would have cost the wall.
Shaped and matched
Detail work, done so it does not read as a repair.
The same skill that matches a patch into an existing wall is the one that builds a shape onto it. Both come down to working the material in place until it looks like it was always there.
Show us the wall.
Send a photo and we will tell you what you are looking at — what system it is, what is likely causing it, and whether it needs doing now.