# Cracks telegraphing: what a fix costs

> What it costs to fix cracks telegraphing through epoxy: per-foot crack repair, recoating and membrane options, with arithmetic for a 400 square foot garage.

Canonical: https://epoxygaragefloorlab.com/cracks-telegraphing-cost/

Last updated: 2026-11-09

Fixing cracks that telegraph through epoxy costs about $10 to $30 per linear foot for routing, filling, and grinding, plus the cost of coating over the repair. On a 400 square foot garage, a full recoat runs $2,000 to $4,800 at $5 to $12 per square foot, and that is often the practical choice because a local patch on a glossy floor shows.

## What the repair involves

Telegraphing is a slab crack showing through a rigid film. The repair has three parts: opening the crack into a clean channel, filling it with a semi-rigid epoxy or polyurethane, and grinding the patch flat before coating.

The per-foot price covers the routing tool, the filler, the grinding, and the labor. It does not cover the recoat, which is priced separately at the coating rate.

That split is why two quotes for "crack repair" can look far apart. One prices the crack work only; the other includes the recoat that follows.

## Cost by scope

| Scope | Unit | Rate | Example |
| :--- | :--- | :--- | :--- |
| Crack routing and fill | Linear foot | $10 - $30 | 20 ft at $20 = $400 |
| Local patch and coat | Square foot | $5 - $12 | 40 sq ft at $8 = $320 |
| Full recoat | Square foot | $5 - $12 | 400 sq ft at $8 = $3,200 |
| Grinding before recoat | Square foot | $1 - $3 | 400 sq ft at $2 = $800 |
| Crack isolation membrane | Linear foot | Quoted | Depends on system |

The local patch and the full recoat use the same coating rate because both involve the same materials and labor per square foot. The difference is the area.

## The arithmetic on 400 square feet

Take a garage with 30 linear feet of cracking. At $20 per foot, the crack work is 30 × $20 = $600.

A local patch of 60 square feet at $8 per square foot is 60 × $8 = $480. The two together are $1,080, and the repair is visible where the patch meets the old film.

A full recoat at $8 per square foot is 400 × $8 = $3,200, plus the crack work at $600, for $3,800. Add grinding if the old film has to come off: 400 × $2 = $800, for $4,600.

So the choice is roughly $1,080 for a visible local repair or $3,800 to $4,600 for a uniform floor. Neither is wrong; they answer different questions about how much the appearance is worth.

## When the local repair is the right call

A local repair makes sense when the crack is in one area, the rest of the floor is sound, and the floor is textured enough to hide the patch. A flake broadcast floor hides a repair far better than a glossy solid color.

It also makes sense when the floor is older and a full recoat is due anyway in a few years. Spending $1,080 now and $3,200 later is worse than $3,800 now, but only if the later recoat was already planned. If it was not, the local repair buys time at a lower cost.

For a garage where the crack is under a parked car and never seen, the local repair is usually enough.

## When the full recoat is the right call

A full recoat makes sense when there are several cracks, when the existing film is thin or worn, or when the finish is glossy and a patch would be obvious.

It also makes sense when the cracks are wide enough that the repair area is a significant fraction of the floor. At that point the local patch is no longer local, and the labor spread favors doing the whole floor.

A membrane belongs in this decision when the cracks are active. It adds a line item but prevents a repeat, and a repeat costs the full recoat again.

## What can push the price up

Crack width and displacement are the first factors. A hairline needs a shallow route and a small amount of filler. A crack with vertical displacement needs more material and possibly a slab assessment.

Access is the second. A crack along a stem wall is slower to route than one in the middle of an open floor.

Coating choice is the third. A metallic finish cannot be patched invisibly, so a crack repair on a metallic floor usually means a full recoat.

Moisture is the fourth. A crack is a water path, and a wet slab under a repair can blister the new film. Mitigation at $2 to $5 per square foot may be needed before coating.

A fifth factor is timing. Crack repair is cheaper when it is done as part of a scheduled recoat than as an emergency after a failure, because the floor is already being prepared and the equipment is already on site.

## Getting comparable quotes

1. Ask for the linear footage of crack repair, priced per foot.
2. Ask whether the quote includes the recoat or only the crack work.
3. Confirm whether grinding is included and at what rate.
4. Ask whether a membrane is recommended and why.
5. Ask how the repair will be blended into the surrounding finish.
6. Ask for the moisture reading if mitigation is not included.

For the repair method behind these numbers, read [cracks telegraphing repair options](https://epoxygaragefloorlab.com/cracks-telegraphing-repair/). For how to avoid the problem, see [cracks telegraphing prevention](https://epoxygaragefloorlab.com/cracks-telegraphing-prevention/), and for the wider cost picture on a new floor, check the [epoxy garage floor cost guide](https://epoxygaragefloorlab.com/epoxy-garage-floor-cost-per-square-foot/).