---
product_id: 35716395
title: "Plus Deep-Penetrating Concrete Protectant Sealer, Reduces Basement Moisture & Radon Gas, Strengthens Concrete, Outdoor/Indoor, Paintable - 5 Gals"
brand: "radonseal"
price: "₨19695"
currency: SCR
in_stock: true
reviews_count: 8
category: "Radon Seal"
url: https://www.desertcart.sc/products/35716395-plus-deep-penetrating-concrete-protectant-sealer-reduces-basement-moisture-radon
store_origin: SC
region: Seychelles
---

# Reduces moisture & radon gas 4" deep concrete penetration Permanent internal bonding Plus Deep-Penetrating Concrete Protectant Sealer, Reduces Basement Moisture & Radon Gas, Strengthens Concrete, Outdoor/Indoor, Paintable - 5 Gals

**Brand:** radonseal
**Price:** ₨19695
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal deep, breathe easy, and fortify your concrete like a pro!

## Quick Answers

- **What is this?** Plus Deep-Penetrating Concrete Protectant Sealer, Reduces Basement Moisture & Radon Gas, Strengthens Concrete, Outdoor/Indoor, Paintable - 5 Gals by radonseal
- **How much does it cost?** ₨19695 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/35716395-plus-deep-penetrating-concrete-protectant-sealer-reduces-basement-moisture-radon)

## Best For

- radonseal enthusiasts

## Why This Product

- Trusted radonseal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Permanently bonds inside concrete, resisting hydrostatic pressure without peeling or fading.
- • **Deep Concrete Defense:** Penetrates up to 4 inches to seal pores and block moisture & radon gas intrusion.
- • **Effortless Application:** Water-based, zero VOC, and applies easily with standard sprayers or rollers—no special tools needed.
- • **Strengthens & Protects:** Hardens surfaces to prevent dusting, efflorescence, and damage from freeze-thaw cycles.
- • **Paint-Ready & Breathable:** Seals internally without trapping moisture, allowing natural drying and perfect prep for coatings.

## Overview

RadonSeal Plus is a cutting-edge, water-based concrete protectant that penetrates deeply (up to 4") to permanently seal and strengthen concrete surfaces indoors and outdoors. It effectively reduces basement moisture and radon gas infiltration while hardening concrete against environmental damage. Easy to apply with common tools, it prepares surfaces for painting without trapping moisture, ensuring long-lasting protection and enhanced durability.

## Description

RadonSeal Plus Deep-Penetrating Concrete Protectant Sealer, Reduces Basement Moisture & Radon Gas, Strengthens Concrete, Outdoor/Indoor, Paintable - 5 Gals - desertcart.com

Review: Customer service - We had to work with customer service on our purchase and the team was great. Easy to use.
Review: Good Product and Helpful Customer Service - I bought three 5 gallon buckets (one at a time) of this to seal my basement. I had planned just to do one area of floor and the walls with my first bucket but liked it so much I ended doing all walls and floors in my basement. I also used one bucket of Ion Bond Armor for the room I really wanted sealed and used the extra on the most damp walls after using this sealer. I had to remove a lot of old sealer paint and other stuff on the 60 year old walls. I bought the Bosch Concrete Surface Grinder and ground off all the stuff down to bare concrete before spraying the sealer. After spraying it pushed a lot of the white stuff back out. I bought the cleaner and planned to use it to clean the walls after sealing, but it did not work at all in my case. I spent a lot of time on the phone with Radon Seal and they were very helpful. You have to understand that every basement project is slightly different and there are unique snags. It seems in my case I waited too long to use the cleaner (only two weeks) but I may have had calcium carbonate form. I ended up just using the grinder to clean the walls. I highly recommend the Bosch Concrete Grinder but cannot recommend the Radon Seal Cleaner. After sealing and putting Ion Bond the floors are really well sealed. However, I was under the impression that it would leave the surface able to be painted but in my case water beads up and stays for more than an hour. I have been afraid to try to paint like this, but I am happy with the sealed concrete and may not need to paint. I tried to call Radon Seal to discuss painting after sealing but we must have got wires crossed since they did not return my call, which is unusual given the long phone calls I had with them previously. I will try to cal them again when I have time. All said, I would definitely recommend this sealer and the Ion Bond Armor as well as the Bosch Concrete Surface Grinder. I would not recommend the cleaner. I bought the crack filler foam kit but have not used it yet. One other thing, these guys have a very good web site with tons of information. They said that their main customer service problem is people who buy the stuff but do not go to the Radon Seal web site to read all the information before they start the project. You need to make sure the concrete is bare and will absorb water. I had a couple spots that I did not grind enough and when I said the sealer not soaking in I got the grinder out and went over that spot again and it went fine. You need to realize that doing this is a big project. Granted I had some pretty messy old walls to start with, but the grinding and prep work took a huge amount of time. I have been on the project nearly three months, most of the time grinding. However, putting the sealer on will take about 50 minutes a coat (two or three) plus waiting two or three hours then hosing and scrubbing to make sure there is not excess left clogging the surface. In my case I did this in stages and there were eight or ten days devoted to spraying the sealer since I had to move stuff around to be able to clear an area for working on. 11/27/2014 update. I painted two walls in my garage that were sealed with RadonSeal Plus and Ion Bond Armor. I used Behr Concrete and Masonry Paint (the one with no water proofing). I had been concerned about painting because the floor which was sealed the same way beads up water for many hours and I thought the paint might not sink in enough. The paint sent on well and after a month or two it seems to be holding up without any signs of lifting or pealing. I also have been able to patch some holes with epoxy enhanced patching concrete and it seems to attach well to the already sealed concrete walls and floors. The basement seems to be well sealed now. During the late summer I did not see a huge humidity drop and continued to run my dehumidifier. Without the dehumidifier it seemed to have about 55% RH, possibly due to air still coming in through my garage which under the house and part of the basement. I also have two sump pump pits with water in them that are not yet covered to block evaporation. In years past, without a dehumidifier, the labels peeled off of my wine bottles. Now, in the winter, the RH in the basement is less than the main floor, both with no dehumidifier. There is no sign of any moisture on the walls or eflourescence coming out of the concrete. All said, it was a huge amount of work but I am pleased with the result.

## Features

- Penetrates Concrete (up to 4") – Seals the internal matrix of concrete, by blocking pores and capillaries, reducing negative-side water seepage, moisture, water vapor, and radon gas. Ideal for basement floors, foundation walls, slab-on-grade, and both indoor and outdoor poured concrete slabs and walls.
- Hardens & Strengthens Concrete – RadonSeal Plus reinforces concrete surfaces to minimize dusting, efflorescence, and damage from road salts, de-icing chemicals, and freeze-thaw cycles.
- Easy-to-Apply Formula – Water-based. Zero VOCs. No special tools needed. Simply apply with a standard handheld, pump-up, low-pressure sprayer. A roller can also be used when spraying is not practical.
- Permanent – Bonds deep within the concrete, becoming an integral part of the structure. Resistant to hydrostatic water pressure, it does not form a surface film and will not peel, fade, or yellow.
- Non-Slip – RadonSeal Plus absorbs deep into concrete to seal from within without altering the surface appearance or slip coefficient.
- Paintable & Protective – Applied before coatings, RadonSeal prepares and seals concrete surfaces while protecting them. Ideal for use prior to concrete paints, epoxy coatings, clear coatings, overlays, or adhesives.
- Does Not Trap Moisture – Unlike traditional concrete sealers, RadonSeal Plus seals concrete internally without trapping moisture at the surface, allowing the concrete to dry naturally.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B013P3QE1W |
| Best Sellers Rank | #149,373 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #367 in Hardware Sealers |
| Brand | RadonSeal |
| Color | Clear |
| Date First Available | January 18, 2012 |
| Global Trade Identification Number | 00856255006027 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item model number | 110 |
| Manufacturer | Novion |
| Material | Blended Silicate |
| Number of Items | 1 |
| Style | PLUS |
| Surface Recommendation | Floors,Walls |
| Unit Count | 640 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** RadonSeal
- **Item Form:** Liquid
- **Material:** Blended Silicate
- **Style:** PLUS
- **Water Resistance Level:** Waterproof

## Images

![Plus Deep-Penetrating Concrete Protectant Sealer, Reduces Basement Moisture & Radon Gas, Strengthens Concrete, Outdoor/Indoor, Paintable - 5 Gals - Image 1](https://m.media-amazon.com/images/I/81ZrBdkqy1L.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: can this be used on concrete roofs where the rain water is channeled to a storage cistern for drinking water?**
A: Yes, RadonSeal can be used for this application. No problem. There is no concern about leaching or water contamination.

**Q: How well does this work for seepage between the floor and foundation wall?**
A: Very well. Used it once on walls and floor never saw any wetness after that?

**Q: Can this be used over painted basement walls**
A: RadonSeal is a penetrating sealer. This type of product can only be applied to bare & porous surfaces. All paints, previously applied sealers, and other materials that may prevent sealer penetration should be completely removed before treatment.

**Q: Can this product eat away at a basement concrete floor causing solf spots, chipping and cracking. is it possible if over used that it may destroy the**
A: Not at all. My floor and walls are stronger then ever. It purges out dirt and loose dust when first applied but stengthens the concrete after it cures.I think the curing process takes a couple of days to a week. I just swept and washed the dirt away

## Customer Reviews

### ⭐⭐⭐⭐⭐ Customer service
*by B***S on January 9, 2026*

We had to work with customer service on our purchase and the team was great. Easy to use.

### ⭐⭐⭐⭐⭐ Good Product and Helpful Customer Service
*by J***E on August 30, 2014*

I bought three 5 gallon buckets (one at a time) of this to seal my basement. I had planned just to do one area of floor and the walls with my first bucket but liked it so much I ended doing all walls and floors in my basement. I also used one bucket of Ion Bond Armor for the room I really wanted sealed and used the extra on the most damp walls after using this sealer. I had to remove a lot of old sealer paint and other stuff on the 60 year old walls. I bought the Bosch Concrete Surface Grinder and ground off all the stuff down to bare concrete before spraying the sealer. After spraying it pushed a lot of the white stuff back out. I bought the cleaner and planned to use it to clean the walls after sealing, but it did not work at all in my case. I spent a lot of time on the phone with Radon Seal and they were very helpful. You have to understand that every basement project is slightly different and there are unique snags. It seems in my case I waited too long to use the cleaner (only two weeks) but I may have had calcium carbonate form. I ended up just using the grinder to clean the walls. I highly recommend the Bosch Concrete Grinder but cannot recommend the Radon Seal Cleaner. After sealing and putting Ion Bond the floors are really well sealed. However, I was under the impression that it would leave the surface able to be painted but in my case water beads up and stays for more than an hour. I have been afraid to try to paint like this, but I am happy with the sealed concrete and may not need to paint. I tried to call Radon Seal to discuss painting after sealing but we must have got wires crossed since they did not return my call, which is unusual given the long phone calls I had with them previously. I will try to cal them again when I have time. All said, I would definitely recommend this sealer and the Ion Bond Armor as well as the Bosch Concrete Surface Grinder. I would not recommend the cleaner. I bought the crack filler foam kit but have not used it yet. One other thing, these guys have a very good web site with tons of information. They said that their main customer service problem is people who buy the stuff but do not go to the Radon Seal web site to read all the information before they start the project. You need to make sure the concrete is bare and will absorb water. I had a couple spots that I did not grind enough and when I said the sealer not soaking in I got the grinder out and went over that spot again and it went fine. You need to realize that doing this is a big project. Granted I had some pretty messy old walls to start with, but the grinding and prep work took a huge amount of time. I have been on the project nearly three months, most of the time grinding. However, putting the sealer on will take about 50 minutes a coat (two or three) plus waiting two or three hours then hosing and scrubbing to make sure there is not excess left clogging the surface. In my case I did this in stages and there were eight or ten days devoted to spraying the sealer since I had to move stuff around to be able to clear an area for working on. 11/27/2014 update. I painted two walls in my garage that were sealed with RadonSeal Plus and Ion Bond Armor. I used Behr Concrete and Masonry Paint (the one with no water proofing). I had been concerned about painting because the floor which was sealed the same way beads up water for many hours and I thought the paint might not sink in enough. The paint sent on well and after a month or two it seems to be holding up without any signs of lifting or pealing. I also have been able to patch some holes with epoxy enhanced patching concrete and it seems to attach well to the already sealed concrete walls and floors. The basement seems to be well sealed now. During the late summer I did not see a huge humidity drop and continued to run my dehumidifier. Without the dehumidifier it seemed to have about 55% RH, possibly due to air still coming in through my garage which under the house and part of the basement. I also have two sump pump pits with water in them that are not yet covered to block evaporation. In years past, without a dehumidifier, the labels peeled off of my wine bottles. Now, in the winter, the RH in the basement is less than the main floor, both with no dehumidifier. There is no sign of any moisture on the walls or eflourescence coming out of the concrete. All said, it was a huge amount of work but I am pleased with the result.

### ⭐⭐⭐⭐ Product peeling up from surface.
*by W***. on August 9, 2025*

I don’t understand why this product is peeling up from the floor. I’ve etched and mopped the concrete and still seeing this. Update: I didn’t realize that it needs to go on thick. Letting thin layers dry completely didn’t work for me. But it work and doesn’t peel up if I applied successive layers before the prior dried but after the first dried enough that it would run. I’ve revised my rating from 1 star to 4.

## Frequently Bought Together

- RadonSeal Plus Outdoor/Indoor Concrete Deep Penetrating Protectant Sealer, Reduces Moisture, Strengthens, & Reduces Radon Gas Levels, 5 Gallon Bucket
- Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White
- RadonSeal Efflorescence Remover - Cleans Efflorescence, Mortar Haze, Lime, and Rust Stains

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-01*