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.
I have been working on my basement trying to take care of the Radon issue. The 1st time I contacted them with a question on a product they answered back that they didn't carry one for my issue. They were honest about it. The 2nd time I contacted them on what would work on the cracks, they told which product would work the best. I ordered it and it came in a couple of days. More companies need to know what products work best and what product will not work. It was nice to deal with knowledgeable people. Thank You
The first order I placed was shipped out and delivered fast. This last order has had the label created for several days, and still has not shipped. I haven’t received any updates on what the hold up is.
We do our best to ship orders the same day they are placed. Once your order leaves our facility, delivery times depend on the carrier’s performance. FedEx and UPS typically deliver within 1–3 business days, depending on your location.
Shipping Information: https://www.radonseal.com/shipping-and-return-policy.htm
Kind Regards,
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Customer Support
RadonSeal
C
Consumer美国 · 1 review · Experienced 2026-07-22 ·
★★★★★
Scam
I just received my pro concrete wall repair kit $900. The company literally ripped me off they filled the box with food service bags like thousands of little plastic bags, and some assembly pieces for what looks like furniture. This company is a scam artist. Do not and I repeat do not order anything through this company.
Reply from RadonSeal2026-07-22
Good Afternoon,
Thank you for taking the time to speak with you today. To summarize our conversation:
1. The additional boxes shown in your photos are not part of your order, and we do not carry or ship those types of boxes. They appear to have been misdelivered to your address by FedEx. Our shipment is the box with the PRO FOUNDATION sticker on the outside.
2. Unfortunately, our shipping team mistakenly switched the shipping labels for your order and another customer's order. That customer ordered four PRO cartridges and accidentally received your PRO Kit, while you received his shipment.
3. To make this right, we are reshipping your correct order today. It should arrive in approximately two business days.
We sincerely apologize again for the mistake and appreciate your understanding.
Kind Regards,
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Customer Support
RadonSeal
The sealer shipped quickly. My shipment arrived before I was leaving town. Perfect timing.
Reply from RadonSeal2026-07-22
We appreciate you taking the time to leave a review. If you ever need assistance, please don’t hesitate to reach out.
We’re always happy to help.
Cheers,
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Customer Support
RadonSeal
Super fast delivery, product worked as advertised, quick and easy application and cleanup
Reply from RadonSeal2026-07-22
You were only one state away from one of our locations, so it’s not surprising your order arrived just two days after you placed it. We’re glad to hear the application went smoothly for you!
Regards,
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Team RadonSeal
This was not my first time buying products from this company. Once again I received a great quality product that did exactly what it was made to do. This company always sales high quality products.
Reply from RadonSeal2026-07-22
Thank you very much! We truly appreciate your kind words and your taking the time to share them.
Cheers,
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Customer Support
RadonSeal
We are home builder on the Gulf Coast and red Clay is just effective life in building homes here. This product has been the difference in a home selling and not. Science versus brute force wins every time. We will be keeping this in stock from now on.
Reply from RadonSeal2026-07-22
Red clay stains can be incredibly difficult to remove, even with powerful cleaners. We’re glad to hear our product worked so well for the stains you were dealing with!
Cheers,
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Patrick - Product Tech
RadonSeal
Could call and get information on two specific products!
Could call and get information on products from a REAL PERSON!!! No AI- please keep it that way!!!! They are so knowledgeable and patient with all questions and concerns.
Reply from RadonSeal2026-07-22
A real person with patience can be hard to find these days!
We do our best to answer every question and help however we can. And, just like you, we're homeowners too, so we understand the questions and concerns that come with tackling these kind of projects.
Thanks so much for your kind words!
Cheers,
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Team RadonSeal
All customer service representatives are knowledgeable and helpful....
Reply from RadonSeal2026-07-22
We hope so! We’ve been doing this 30 years, so we’d like to think we’ve learned a thing or two. 😄 Thanks so much for your review!
Cheers,
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Team RadonSeal
It was easy and all the products were explained so I knew I was getting what was what I needed.
Reply from RadonSeal2026-07-22
Thank you for your review! We’re glad we could explain the products clearly and help you choose exactly what you needed. We appreciate you taking the time to share your experience!
Cheers,
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Team RadonSeal
The product is very easy to use and shipping is fast
I have always had fast shipping and the product works very well. still dry after two years and this year it has been a soaker.
Reply from RadonSeal2026-07-22
We agree with your sentiment. This year has definitely been a soaker! So much so that a couple of our colleagues have had to use our own products to address water problems in their own homes. Water always wins! The best we can do as homeowners is keep it at bay. 😄
Thanks for your review!
Kind Regards,
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Team RadonSeal
Easy to order and product was everything we hoped for
We used Lastiseal Stainand Sealer and it makes our 25 year old patio look like new!
Reply from RadonSeal2026-07-22
We appreciate you taking the time to leave a review!
If you have any pictures of the finished surface, please email them to us. We’d love to share them online to help others see the results.
Cheers,
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Team RadonSeal
Customer service rep called us back the very next day. He was very helpful.
Reply from RadonSeal2026-07-22
We do our best to get back to you as quickly as possible.
Thanks so much for taking the time to leave a review!
Kind Regards,
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Customer Support
RadonSeal
good shipping and ION-BOND ARMOR was easy to install Thank U
Reply from RadonSeal2026-06-25
Thank you for your review!
We’re glad to hear the shipping went smoothly and that our Ion-Bond Armor was easy to apply.
We appreciate your business and support!
Cheers,
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RadonSeal
Ordered twice now you get everything you need. And plenty of information and seems to be working only about 6 months since I sealed the first crack and no leaks yet
Reply from RadonSeal2026-07-22
There’s no better way to seal a crack than with a quality polyurethane or epoxy injection kit. Glad we could help you out!
Kind Regards,
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Customer Support
RadonSeal
Thank you for taking the time to leave a review, and good to hear the repair went as planned.
We appreciate your business and support!
Regards,
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Customer Support
RadonSeal
