Carbon Fiber Grid Stitch Concrete Crack Repair System

Take a bite out of concrete crack repair. A true structural repair for flat, vertical, and overhead cracks.

StitchDog stitches installed across cracks on a Hawaii parking structure
StitchDog SDR 4000 Starter Kit with Dual Component Applicator Gun
StitchDog SDR 4000 Crack Repair Kit contents
StitchDog Carbon Fiber Grid Stitches, 30 pack

Parking structure crack repair, Hawaii. Read the case study

Up to 75%less than remove-and-replace
1,000,000+stitches sold since 2017
Flat · Vertical · Overheadone system, two epoxies
Won't rustoutperforms steel rebar when bonded in concrete

Shop StitchDog®

Kits, stitches, and tools

New to StitchDog®? Start with a Starter Kit. It includes the Dual Component Applicator Gun.

StitchDog SDR 4000 Crack Repair Kit contents
Flat cracks · Refill

SDR 4000 Kit

The refill kit for flat-crack repairs, for crews who already own a Dual Component Applicator Gun. Low-viscosity SDR 4000 epoxy penetrates deep...

$133.40
StitchDog SDR 4020 Crack Repair Kit contents
Vertical & overhead · Refill

SDR 4020 Kit

The refill kit for vertical and overhead repairs, for crews who already own a Dual Component Applicator Gun. High-viscosity SDR 4020 gel...

$133.40
StitchDog Carbon Fiber Grid Stitches, 30 pack
Add-on stitches

12" Carbon Fiber Grid Stitch (CFGS), 30 Pack

Extra stitches for larger repairs. Each CFGS uses Epoxy Riveting Technology (ERT): the open grid lets epoxy flow completely through the stitch,...

$220.50
StitchDog Dual Component Applicator Gun
Tool

Dual Component Applicator Gun (SDR-DCG)

A durable, well-balanced, heavy-duty applicator gun with a high thrust ratio for smooth, even dispensing. Works with StitchDog® SDR 4000 and SDR...

$82.00

Which epoxy do I need?

SDR 4000Flat, horizontal cracks

Low-viscosity epoxy that flows deep into the crack. Slabs, decks, floors, sidewalks, and parking structures.

SDR 4020Vertical and overhead cracks

High-viscosity gel that holds in place. Foundations, walls, pools, columns, beams, and ceilings.

Why StitchDog®

True crack repair, not crack filling

Crack filling

Most "repairs" just clean and fill the crack. Fillers creep and fatigue, and fail over time from temperature swings, freeze-thaw, expansion and contraction, and seismic movement.

StitchDog® repair

Carbon fiber stitches locked in structural epoxy span the crack. The load spreads evenly across stable concrete on both sides, stopping creep, fatigue, and re-cracking.

Fast return to serviceInstall with a saw, a vacuum, and the applicator gun.
Everything in one kitEpoxy, mixing tips, stitches, gloves, and install card.
Built for any structureFoundations, pools, walls, decks, columns, beams, sidewalks.
Bulk kits availableContractors on larger projects: ask about bulk pricing.
How StitchDog works in 4 steps: fill the crack, set the stitches, level the surface, grind surface clean

See it installed

Five simple steps to a structural crack repair.

Flat Crack Repair
Vertical Crack Repair

What customers say

"As a concrete overlay installer, the biggest issue with existing concrete our customers want us to coat is cracks. For years we have turned down work because of cracks. Finally, we have a permanent solution for fixing cracks."
Mike Ash · RAD Concrete Coatings
"It has been six months and not one of the 280 plus lineal feet of cracks has come back."
Willie White · CPSC, Honolulu
"It gave us the strength we needed to provide the customer with a long-lasting repair. The reps were knowledgeable and were available onsite to give us the expertise needed to perform a solid installation."
Justin Peck · Pektek Coatings

Best structural repair on the market

"I have been using this product and the 4020 for overhead and vertical repairs for years, never had a failure. I live in an extreme freeze/thaw region and Stitchdogs has worked every time… Only way I will guarantee that THAT crack will not come back."
Coatingsguru · Amazon review · December 2022

Highly Recommend

"I needed a concrete stitch kit for my foundation before retiling. … Paul was amazing!! He offered assistance every step of the way. Walked me through exactly how to apply their product and tips to get best results. He even rushed my order so that I could get my project completed on time. … And the concrete stitching was insanely easy to apply."
Ashley K. · Verified Amazon purchase · March 2020

Awesome product and support!

"So happy I found this company and their product. I've had several big cracks in my house (thanks to the original owner!). Stitch dog offered so much help when it came to using this product, with suggestions and procedures so that the DIY person can do it without any headaches. I've been in touch with them and had to order more epoxy. Thumbs up all the way!"
Mike P. · Verified Amazon purchase · July 2020
"Used to stabilize cracks on our pool deck that was breaking the deck texture. William expedited my last kit much appreciated"
Amazon customer · Verified Amazon purchase · May 2025

FAQ

What's in a StitchDog® kit?

(1) epoxy tube set, (2) mixing tips, (10) 12" carbon fiber grid stitches, heavy-duty work gloves, and an installation guideline card. Starter Kits add the Dual Component Applicator Gun.

Which epoxy do I need?

SDR 4000 for flat, horizontal cracks. SDR 4020 for vertical and overhead cracks.

How far apart do I place the stitches?

Spacing depends on the crack and the application. See the Installation Guidelines, or contact us for help planning your repair.

What tools do I need?

A saw with a diamond blade, a vacuum, and a Dual Component Applicator Gun (included in Starter Kits).

Is StitchDog® code evaluated?

Yes. The carbon fiber grid stitch system is covered by ICC-ES Evaluation Report ESR-3815, originally issued January 2018. See the report and independent IAS lab load test results under Downloads.

Downloads

Our story

StitchDog® was created by the owner of Professional Construction Products after 10 years of frustration trying to repair concrete cracks. Built with carbon fiber from Fortress Stabilization and backed by professional guidance from PCP, more than 1,000,000 stitches have been sold since 2017.