Search  for anything...
RadonSeal

RadonSeal DIY Concrete Foundation Crack Repair Kit (20-ft) - The Homeowner's Solution to Fixing Basement Wall Cracks Like The Pros!

    • Based on 165 reviews
Condition: New
Checking for product changes
$279.00 Why this price?

Buy Now, Pay Later

As low as $46.50 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

Non-returnable due to Hazmat safety reasons

View our full returns policy here.

Availability: In Stock.
Fulfilled by RadonSeal Basement & Concrete Sealers
Arrives Wednesday, Dec 4
Order within 12 hours and 23 minutes
Available payment plans shown during checkout

Features

  • NO DRILLING REQUIRED The low-pressure injection method eliminates the need for drilling.
  • HAIRLINE CRACKS Low viscosity urethane is suitable even for the repair of hairline cracks.
  • NO NEED TO EXCAVATE Save serious money by repairing the crack from the inside.
  • NO SPECIAL TOOLS REQUIRED Use a standard caulking gun to inject.
  • PERMANENT - Prevents water seepage permanently!

Brand: RadonSeal


Item Form: Paste


Manufacturer: Novion


UPC:


Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 10 x 8 x 8 inches; 10 Pounds


Item model number ‏ : ‎ 303


Date First Available ‏ : ‎ February 17, 2014


Manufacturer ‏ : ‎ Novion


Best Sellers Rank: #215,521 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #505 in Wall Surface Repair Products


#505 in Wall Surface Repair Products:


Customer Reviews: 4.4 4.4 out of 5 stars 165 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 4

This item is non-returnable:

Non-returnable due to Hazmat safety reasons

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • First time user, ordered double-kit for 2 cracks, Radonseal rocks!
Review Image by RJG RJG
Review Image by RJG RJG
I order the double kit in order to repair 2 separate cracks. Need: - Radonseal Kit - Plastic drop cloth - At least 10 mixing sticks (HD paint department has 6 in. wooden Paint Stick for 1 qt. (30-Pack)) - Roll of paper towels - Wire brush on Makita drill (or manual wirebrush is fine also, comes with Radonseal kit) - Old rags - Pencils - Bucket of hot water to warm up injection foam (20 min prior to injection) - Stack of Paper Plates (for mixing Epoxy, 3 mixes per plate) - Garden sprayer (to flush ports with water) - Box of gloves (always wear 2 sets at a time, keep bottom layer and switch top layer) - Mask - Goggles (comes with Radonseal kit) - A few old towels Preparation: - Check for caulk tube fitment in your caulking gun before opening tube - Tubes will only compress half its length, due to having 2 chambers - Measure and Mark with Pencil port placement areas (6" apart, not 8") - A dollop is roughly a 5/8" round blob - Use paper plates for mixing - about 3 triangular mixing areas around each plate - Spread plastic under crack work areas Epoxy Steps (the more difficult and tedious of the tasks): - Use separate sticks for A and B Epoxy containers when scooping a dollop on paper plate - Use 3rd stick to mix the A and B dollops together, then also use this stick to apply Epoxy. - Be thorough when putting Exoxy around the port rims (but not in center) - Work quickly to put the Epoxy around the port rim - After pressing a port to the premarked wall, smooth out excess around outside of rim with same mixing stick. - Use up rest of 2-dollop mixture for next port(s). I backbuttered the rim of around 3 ports per 2-dollop mixture. - Always work from lower ports to upper - After placing ports, start from bottom when covering the crack with Epoxy. You don't want to go too wide with crack coverage, you have to judge how much of A and B mixture to use up, relative to the length of the entire crack. - When covering cracks between and around ports, you can scoop slightly bigger dollops - try to evenly scoop the same amount of A and B. - Don't force Epoxy into crack, just paste it over surface and around outside of ports Irrigation Steps (easiest of the tasks): - Have old towels positioned under the lowest port of crack(s) - Wait until Epoxy is fingernail-hard before irrigating - TIP: I used a drill bit smaller than the port diameter to check each port to ensure that there was no buildup of epoxy blocking the center of the port to the wall. You can tell when the drill bit is hitting the cement wall based on depth and also feel of hitting cement versus epoxy. - Using garden sprayer with water, put water into topmost port and confirm that it comes out of all the lower ports. - TIP: Use the port stoppers once water comes out to ensure all ports have water coverage - The idea here is to ensure the crack is wet and that in general most or all of the ports are showing they can leak out water (if water passes through the ports, the resin will also pass through the ports). Resin Steps (the more fun of the tasks, but is also a bit messy - double gloves again): - You should be heating up resin tubes in warm/hot water 20 minutes before dispensing. - Ensure you don't lose the "restrictors" when you open the plastic bag for the tubes. - Put tube into caulking gun before taking off the blue cap and stopper (it may be easier to attach the restrictor and host after the tube is in the gun). - Add restrictor to top of tube, then screw on hose and mixing tip. - Wide end of flexible hose goes over caulking gun tip, smaller end over ports - Use the same flexible hose when switching resin tubes to save the resin in the hose. - Go easy on caulking gun trigger, slowly dispense resin, pausing at times (while foam seeps and expands a bit) - TIP: You can see your dispensing rate (should be slow) by watching the tiny air bubbles flowing through the hose. - Continue dispensing into a port until it oozes out of next higher port, then switch to that port and put a stopper on port just completed. - Repeat until all resin is dispensed from bottom port to topmost port and you can see resin coming out the top of the crack. The foam will keep expanding, even for days after the repair. I found that even with a drenching 2" rainfall a mere 12 hours after repairing both cracks the product still worked flawlessly! ... show more
Reviewed in the United States on March 29, 2024 by RJG RJG
    • Really good with a few minor 'buts'
Product appears to be doing what it is supposed to despite some obvious user issues during my 'install'. Suggestions: use the gloves, it can get messy fast; take your time; press the gun slowly; double and triple check your fitting seals. My order was missing a few things but I made it work. Order comes as two boxes. One box had 15 fittings, the other only 12. One box had a wire brush the other did not. One had gloves and the drop cloth the other did not. And no, not all missing items were the same box. I made it work but it might be an issue for some. The two-part dries way fast so do what the videos say and only mix a small part. And the gloves, well, despite thinking I could do a clean job I have grey epoxy residue distributed across both hands post mineral spirit rub down. I'll see if it works soon enough. Have had 4 inches of rain overnight so ... 17 Aug Update: Have had a number of really, REALLY heavy rains that have saturated the entire area and the walls are dry. Perfectly dry. Have to admit I am surprised. Happily! ... show more
Reviewed in the United States on July 16, 2021 by Michael Dunn
    • Works but could be improved
Take your time and do the prep work. Open up the cracks well, I used a grinder to open up cracks. You may have to inject a lot of water before you see it come out of the lower taps so be patient. Inject to material VERY VERY slowly The good - The product works, I was able to seal a couple good size cracks and they have prevented water from entering the home. The Bad - The "tools" provided are junk, I would suggest having a dozen mixing tools and cheap disposable putty knives on hand as well as several pieces of cardboard or some sort of plastic tray to mix material on. Also get a few pair of good disposable gloves to protect your hands. ... show more
Reviewed in the United States on November 28, 2023 by Ken F. Magdic
    • Awesome Stuff!
This product works amazing and the materials are very high end. I do have to say I am a pretty handy do it yourselfer and this was a time consuming moderately difficult task. I learned why the pros charge so much! My project was a big task however so I bought (1) 20 ft kit and (1) 10ft kit. I had 30 feet of crack to cover with vertical and horizontal cracks on an old foundation with previous old attempts to repair. Watch the youtube video and read the instructions carefully. The mixed epoxy sets up in like 5 – 10 minutes so mix small amounts. Also the epoxy stinks. One of the jars smelled like sulfur so if you are sensitive you will want to wear a p100 or better mask. I had a window open with a fan blowing out so I had fresh air flowing. The kit does come with safety glasses and 2 pairs of gloves but I wore a more comfortable pair of safety glasses and working with the product I did get splash on them. Also have extra pairs of gloves and mixing trays ready and take the time to make sure your epoxy is spread perfect. I had everything on a covered table ready to go in sequence so I could be efficient. When filling the ports with foam - Pin holes would make the foam come out and it made it more time consuming to make sure I got the crack filled. The foam tube does seem to stop about 3/4 of the way in so it doesn't finish a tube like a caulking tube normally would. I still had enough for my project though. Clean up was easy but the epoxy breaks into sharp shards when removing the ports so have a vacuum ready and wear your safety equipment! ... show more
Reviewed in the United States on February 24, 2020 by Tom

Can't find a product?

Find it on Amazon first, then paste the link below.