RadonSeal (radonseal.com) has a 4.7 out of 5 rating on OK.one, based on 66 user reviews collected here. It is listed under Construction & Manufacturing and its reputation is excellent. Praise is nearly unanimous, with 93% rating it 4 stars or higher; The business has replied to 100% of negative reviews. Last updated 2026-08-10.
Good products, fast delivery. Price is a little too high.
Thank you for your review! We’re glad to hear you’re happy with the products and fast delivery. We appreciate your feedback on pricing as well. It helps us continue to improve. Thanks again for your support! Cheers, ----------- Customer Support RadonSeal
Customer service was good as calls were returned in a reasonable amount of time. Shipping was prompt and the product arrived quickly. The Crack seal was the most amazing part of my experience with RadonSeal. I have successfully stopped multiple basement leaks in my 75 year old poured cement basement walls. I would highly recommend this product to anyone looking for a solution similar to my basement cracks. Thank you RadonSeal for this DIY kit that the homeowner can buy to stop leaks at a fraction of the cost of professional repair cost.
Thank you for the detailed review. Good to hear our customer service, shipping, and DIY Crack Seal kit all met your expectations. We truly appreciate your recommendation and your support of us. Kind Regards, ------------------ Customer Support RadonSeal
Haven't used it yet but delivery was fast.
We’re glad the delivery was fast, and we’re here if you need any help with the repair along the way. Kind Regards, ----------------- Customer Support RadonSeal
After researching this subject thoroughly ended up going with the more expensive RadonSeal kits and have been very happy with them. All parts are provided plus a few extra useful items for this project. Delivery was good as well. Would definitely recommend and suggest researching projects on YouTube. The only suggestions i would have is regarding doing cracks in corners of concrete foundation. Flat crack surfaces are definitely easier! Corner cracks are definitely more challenging especially installation of the ports and epoxying in the crack. Large cracks are especially challenging. Maybe a RadonSeal tutorial on various installs would be helpful on their website. Lastly, If there were sizes of corner crack ports or a means to modify for smaller cracks that would be a huge help. They are tough to epoxy in small crack areas. Other than these suggestions i would recommend and give an A+ rating!
Thank you for the detailed review and thoughtful feedback. We appreciate your suggestions regarding corner cracks, smaller installations, and additional tutorial content. This is very helpful, and we’ll be sure to pass it along to our team. Thank you again for your recommendation and support! Cheers, ------------ Customer Support RadonSeal
Got the product I needed and shipped very quickly. Very pleased.
Appreciate you leaving us a review! Kind Regards, ----------------- Customer Support RadonSeal
Great service, hopefully this product works
Thank you for your review! Clay-X is very effective at removing red clay stains, though in some cases those stains can be especially stubborn. If you need any help or guidance during your project, we’re here to support you along the way. Kind Regards, ----------------- Customer Support RadonSeal
The response was fast and the website was easy to use. The delivery was quick and well packaged. Fine job I’d recommend your website. I haven’t applied the product yet but I’m sure it’ll be what I’m looking for.
We’re glad to hear the website was easy to use, delivery was quick, and everything arrived well packaged. Please reach out if you have any questions once you get started with your project. Appreciate your review! Kind Regards, ---------------- Customer Support RadonSeal
Super-fast delivery. I didn't expect it to arrive as soon as it did. Great product and it worked as advertised. I will definitely order this again. Thank you
Your review is appreciated! We’re glad to hear the delivery exceeded your expectations and that the product worked as advertised. Cheers, ------------ Customer Support RadonSeal
Products are great and service is by far the best
Thank you for taking the time to write a review for us. Let us know if you need assistance. Cheers, ------------- Customer Support RadonSeal
We appreciate you taking the time to leave a review. If you need any assistance or have any questions, please do not hesitate to reach out to one of our experts. Thank you for choosing our products, and enjoy your summer!
I only received half my order??? Let me know what's going on Please!
Please know that items must ship in separate boxes and may travel on different UPS routes to reach their destination. According to the tracking information, the first package was delivered on Friday, June 5, and the second package is currently scheduled for delivery today (next business day), Monday, June 8. Kind Regards, ----------------- Cheryl J. Customer Support RadonSeal
Product delivering on time and samples that are available to try before having to purchase a large quantity. Instructions on the product are clear and easy to follow! Thank you!! Looking forward to our next order arriving so we can get on with our project!
We truly appreciate your business and are excited to be a part of your project. If any questions come up along the way, please don't hesitate to reach out to one of our experts. We're always happy to help. Best of luck with your project, and we look forward to serving you again!
prompt response, thorough info on products and applications.Knowledgable staff. rapid order processing.
Thank you for your kind words! We take great pride in providing knowledgeable support, detailed product information, and fast order processing. We appreciate your business. Enjoy your summer!
I bought 2 sets, one for $158 for a small crack, and the second about a set for $430 for a large crack. A small one has already used, excellent quality and excellent equipment of the set. I haven't used the set yet, but I really liked the package. Fast free shipping. It would be great if there was an option to buy additional injection ports
Thank you for your review and for choosing our crack repair kits! We're glad to hear the first kit performed well and that you were pleased with the quality, packaging, and fast shipping. We also appreciate your suggestion regarding additional injection ports and will take that into account. Best of luck with your larger repair project, and please don't hesitate to reach out if you have any questions!
Always room To more grove!
Thank you for your review, and we appreciate your support!
Amazing how quickly I received my order! Really cut the down time.
Thank you for your review, and glad to hear your order arrived quickly! Most orders typically arrive within 1–3 business days in the Central and Eastern United States, and within 3–5 business days in most Western states, although transit times may vary depending on the carrier and destination.
Our apologies. It appears there may have been a typo in the email address provided by another customer, which resulted in you receiving these notifications. We will correct the issue immediately so that you do not receive any further emails. Thank you for bringing this to our attention.
Had the order at my front door very quickly. Great turn around time, awesome kit with instructions included.
Thank you for your great review! We’re glad to hear your order arrived quickly and that you’re happy with the kit and included instructions. We appreciate your support and wish you the best with your project!
Please disregard. I did not intend my message as a review - only as a "heads-up" for RadonSeal. JEF
If your order is taking longer than 3 days to arrive, please review your tracking information for any potential delays or delivery updates. If you notice any issues or need assistance, don't hesitate to get in touch with us, and we’ll be happy to help ensure you receive your product as quickly as possible.
Easy to order and more choices than Amazon
We list our products on Amazon, but you can always cut out the middleman and order directly from us for a more direct purchasing experience.
66 reviews matching