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Crack-Pac 9 oz. Injection Kit (2 Cartridges)

  • Repair fine to medium cracks in concrete
  • Does not shrink and resists oils, salt and mild chemicals
  • Usable with standard caulking tool
  • See More Details

Product Overview

Simpson Strong-Tie offers reliable, easy-to-dispense products for a variety of restoration applications, including structural restoration, pick-proof sealing and water-intrusion prevention. The Crack-Pac two-part, high solids, low-viscosity crack injection epoxy is designed to repair cracks in concrete. The mixed adhesive has the viscosity of light oil and a low surface tension that enables it to penetrate fine to medium width cracks. Resin is contained in the cartridge and hardener is contained in the nozzle. Once the nozzle is threaded onto the cartridge, the hardener is released into the resin-filled cartridge by turning the knob at the base of the nozzle. The two components are mixed by shaking the cartridge.
  • Dispenses with a standard caulking tool, no dedicated dispensing tool needed
  • Low viscosity
  • Clean and easy mixing; no additional tools required
  • Chemically bonds with the concrete to restore strength
  • Resistant to oils, salts and mild chemicals
  • Non-shrink
  • Shop all Simpson Strong-Tie here.
  • California residents

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)
2.625 in


Epoxy Accessory Type
Package Quantity
Product Weight (oz.)
61 oz

Warranty / Certifications

Manufacturer Warranty
Limited Warranty

Questions & Answers


Does this product expand at all when it cures?

Asked by bkbrec September 17, 2018

It does expand, which is what makes it work. It expands into the crack and that is what seals it.

Can I use crack pack epoxy to repair large to small hairline cracks in wood? The crack pack epox...

Asked by DJ March 25, 2018

I do not think it would work in wood because the epoxy expands as it works. Using it in wood could cause the crack to get larger as the epoxy expands. You might try wood filler and then a sealer....polyurethane or varnish, on the wood to keep it water tight. Remember though that wood it porous, so keeping it water tight over time is nearly impossible. Hope this helps.

Do you make a rod hole repair kitt

Asked by Mike October 17, 2017

We're not clear what is meant by a "rod hole repair kit". We would suggest calling in to speak with one of Technical Support reps - 800/999-5099. Thank you!

I have hairline cracks in my limestone steps outside - will this product work?

Asked by Cindi July 13, 2017

The product was designed for and tested on concrete. We do not have any information for its use with limestone. Thank you!

When will this be available again to order online?

Asked by Brooke March 31, 2017

Hi Brooke, this item is currently in stock online. The Homedepot.com will allow you to place the order for whatever quantity is available at the time in the online inventory. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.

Is there a substitute for this product? It is unavailable in stores and to ship

Asked by MWC January 16, 2017

There is currently an inventory issue with the ETIPAC10KT. In the meantime you might consider the ETI-LV (please refer to page 284 of our C-A-2016 Anchoring and Fastening Systems for Concrete and Masonry catalog). The EDT22S will be needed as well to dispense this product. Thank you!

Why cant i add this to my cart?

Asked by Dan September 27, 2016

My floors on the inside of my house have a water based stain on them. Will this product take stain so I can match the floor again?

Asked by Allen February 12, 2016

We have not tested stains on our epoxies. We specifically test this product for water absorption and it does not absorb water to any significant amount. “Water-based stain” is too broad a statement for us to really offer advice. A “solid stain” is really like a paint – what we usually consider a stain is actually a “transparent stain” in the coatings industry. An epoxy will not take a transparent stain as concrete does and will not look the same. A second issue is that most stains do not have good adhesion modifiers to promote bonding to a highly cross-linked epoxy. You may be able to find a good stainable primer that will stick to the epoxy – the repair will still look different than original, but may not be as noticeable. We would recommend testing the primer on something else (cardboard or a small concrete block) to first to see if the primer/stain combination will match. Thank you!

will the kit seal the crack with water seeping thru

Asked by moeman January 10, 2016

No, this kit is NOT for seepage

Crack that only leaks in winter

Asked by MF January 5, 2016

If we are understanding this correctly, this crack was repaired in the past. We are not sure if the leak is due to a new crack forming and would recommend addressing the cause of the crack before trying another repair. Thank you!

Crack-Pac 9 oz. Injection Kit (2 Cartridges) - page 2

Customer Reviews

  • 4
    out of 31 reviews
  • 83% recommend this product
Filter by:
Showing 1-10 of 31 reviews
Injected about 48’ over a couple of years.
I have injected about 48’ at different times. I used the expandable H20. It is messy but works as advertised. The only problem I encountered was one of the cracks was larger and some of the material got pumped through the wall and out into the backfill. It did stop the water, but you must stabilize your walls from moving before injecting them, or they will crack again. I want everything straight, clean and tidy. This product is not that. I had to relax and accept that it was messy and a little free form. I used plastic spoons and cheap small plastic storage containers for mixing the epoxy. I mixed small amounts and threw them away after each use. The epoxy time is limited so don’t mix too much at one time. This sure beats the cost of hiring a contractor (I’ve done commercial construction for 45 years).
by KShrack
Worked as advertised!!! This was my first time using this product. I would recommend it to anyone...
Worked as advertised!!! This was my first time using this product. I would recommend it to anyone! Follow the directions!! Here are some more tips… 1. Prepare the crack by aggressively scrubbing it with a heavy bristle wire brush. If need be use a hammer and chisel to break away any protruding concrete like the edge from the forms used to pour the foundation. When finished, use a shop-vac to collect all dust and chunks loosened during the prep process. 2. Get some paper towels for easy and fast cleanup. Also get several pieces of cardboard for mixing the epoxy. Box flaps worked great! 3. You get about 4 mixing sticks. Use one for tub A and use one for tub B and One for mixing. You can wipe the ones you used for A&B clean to reuse again and again. By the same token you can reuse the mixing stick over and over. 4. To minimize epoxy waste, Mix small batches 50/50 of A&B Epoxy for both injection port attachment and crack coverage. You have approximately 3 minutes to apply the mixed epoxy before it starts gel and harden. Follow the spacing recommendations for applying the injection ports and overlap the crack by about an inch on each side and completely surround the injection ports with epoxy. If you spill or drip epoxy onto any of the ports wipe it off immediately with a paper towel. Make sure all injection ports work by opening and closing them before the epoxy sets up. When done cleaning and inspecting leave all of the ports open (pushed in) . Be patient and let everything cure for at least 24 hours. 5. Before you mix the injection tubes test fit the tube in your caulking gun. The nozzle on the tube is about 5/8” diameter and was too big for my caulking gun. I modified the slot in my caulking gun to accept the tube. Since you mix the tube in steps prior to loading the tube into your caulking gun, you would be SOL if it doesn’t fit in your caulking gun. One tube was enough for about 4’ of wall. 6. It is recommended that you have some A&B epoxy at the ready in case there are leaks. I did have a couple of very small leaks but nothing that warranted more epoxy to seal them. 7. Follow the instructions for injecting, ie start at the bottom port and work your way up closing each port along the way. 8. As far as time goes... Due to small batch epoxy mixing, it took a total of about an hour to apply the injection nozzles and cover the crack with epoxy. On the injection side, it only took about 20 minutes. Have fun!
by MoMan480
3 people found this helpful
Worst Product I have EVER Used
I am a professional in the fiberglass industry that works with epoxy and injections as a 20 year career: this is the worst thing I have ever had to deal with. I regret trying to fix a 1/16" crack four feet long in my basement cold room with this product. DO NOT BUY. Buy a product with a thicker injection or fast acting expansion ability. I did everything the package stated, watched the videos and even watched online how-to's to be sure. I let the paste over epoxy cure for 24 hours. I started to apply the tube of sealant through the ports and after the first full tube was done and as soon as I started on a new tube I found a pin hole in the paste over leaking: I stopped applying the injection, closed everything and immediately applied more paste over to the hole. Problem is the injection is expanding and now the paste over will not set over the hole. I am going to end up with a complete tube of injection expand and go hard before the hole is plugged. I tried even holding one of the mixing sticks over the pin hole but the paste over won't set with the injection on it; it's actually dissolving the paste over I think. That is worst problem: now I have expanding injection epoxy all over the floor, most of one tube's worth. Other issues: - round ended thin sticks are useless for mixing - gloves provided are big enough for a yeti, but tear trying to get them over work gloves - mixing the hardener from the tube into the caulking-style tube almost took a paint mixer to work - the injection ports don't close all the way - the tube of injection does not drain all the way leaves a lot of injection in the tube you can't use - jars of paste over are hard to use: tubes would be better
by AnubisFiberglass
12 people found this helpful
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
This stuff worked exactly as advertised. I read the...
This stuff worked exactly as advertised. I read the instructions several times to make sure I understood them, and then followed them exactly. I got the results I wanted.
Product worked exactly as I expected, filled the crack in...
Product worked exactly as I expected, filled the crack in foundation and dried very hard. Instructions weren't crystal clear, but they were understandable.
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
I am not a professional at fixing foundations and this...
I am not a professional at fixing foundations and this was my "do-it-yourself" attempt. I failed to mix the two epoxy substances together in the beginning and thus I botched the job. It's, of course, my fault, but the directions could have been much clearer about this. Perhaps future directions can put this step up front in bold letters
by CA
This was an easy product to use and it works...
This was an easy product to use and it works excellent! My friend is planning on using it on his basement.
by HomeDepotCustomer
The kit is very good. Comes with everything you need,...
The kit is very good. Comes with everything you need, depending on the size and length of crack. I did watch video on YouTube from Simpson on how to do it. Very helpful after reading the instructions.
by Cameron
Showing 1-10 of 31 reviews