---
product_id: 7487207
title: "LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish"
brand: "radonseal"
price: "¥168691"
currency: JPY
in_stock: true
reviews_count: 9
category: "Radon Seal"
url: https://www.desertcart.jp/products/7487207-lastiseal-brick-and-concrete-sealer-5-gal-deep-seals-strengthens
store_origin: JP
region: Japan
---

# Water-resistant & breathable Penetrates porous masonry 15-year deep protection LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish

**Brand:** radonseal
**Price:** ¥168691
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal your legacy with 15 years of invisible strength!

## Quick Answers

- **What is this?** LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish by radonseal
- **How much does it cost?** ¥168691 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/7487207-lastiseal-brick-and-concrete-sealer-5-gal-deep-seals-strengthens)

## 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

- • **Natural Flat Finish:** Preserves authentic texture and appearance—no glossy or slippery surfaces here.
- • **Versatile Masonry Armor:** Perfect for brick, concrete, pavers, porous stone, and historic restoration projects.
- • **Breathable Water Resistance:** Blocks water intrusion while letting trapped moisture escape—no peeling, no flaking.
- • **Unmatched 15-Year Durability:** Deep-penetrating formula becomes part of your masonry, not just a surface coat.
- • **Effortless Application & Cleanup:** Water-based, low-odor formula applies easily with sprayer or roller and cleans up with water.

## Overview

LastiSeal Brick & Concrete Sealer is a premium, water-based polyester/polyurethane formula that deeply penetrates porous masonry surfaces like brick, concrete, and stone to provide up to 15 years of durable, breathable protection. It strengthens from within, reduces dusting and wear, and preserves the natural flat finish without peeling or flaking. Ideal for residential, commercial, and historic masonry restoration, LastiSeal offers a long-lasting, easy-to-apply solution that outperforms traditional topical sealers.

## Description

LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish - Masonry Forms - desertcart.com

Review: Is It Possible to Give SIX STARS?!!!! - This stuff is unbelievable! We are the second owners of our entire brick home and were devastated to have wind driven rain coming through the exterior brick veneer and into the living spaces (we didn’t find out til after settlement the p.o.s. builders (Providence Builders: owner K. Annas and supervisor foreman M. Kirby of Hickory, NC) had their builders licenses CONFISCATED by the N.C. Atty General!!!) Our research as well as our experience told us other sealers break down quickly under UV sunlight and products requiring mineral spirits cleanup are a nightmare when using sprayers. Very trepidatiously we ordered our first 5 gallons and followed the “wet on wet” technique described by reviewer “Coltrane”. We sprayed it on, gave it some time to soak in and BEFORE the previous layer started to “dry” out, we’d go over it again, with another light spray (picture the patience it requires to use light coats through a can of spray paint, in order to get a truly good (no runs) finish). WELL, HURRICANE FLORENCE JUST RIPPED THROUGH HERE AND, GUESS WHAT - WE ACTUALLY WATCHED AS THE EXTERIOR WALLS WE APPLIED LASTI-SEAL HAD THE WIND-DRIVEN RAIN DROPS LITERALLY “BOUNCING OFF” INCHES OFF THE WALL. And, no leaks through the veneer in those areas. That was it - we are now in the process of spraying the entire house with Lasti Seal (satin). Starting with the monolithic brick veneers with a NorthEastern exposure. It is going to be a huge product but,we are convinced Lasti-Seal is literally going to save our home! (Oh yeah, we had our chimney sweeps get up on the roof and apply LastiSeal to our brick chimney and they are amazed - so, look for LastiSeal to soon be picked up by chimney sweeps across the nation, I have no doubts (the stuff they endorse now breaks down under UV sunlight.) Finally, the fact that this stuff is water cleanup makes it ALMOST too good to be true. But, it ain’t and it is true! UPDATE: 2020-05-24: well, It’s coming on 2 and 3 years since we “wet on” technique-hand pump sprayed LastiSeal onto our monolithic, NorthEast facing lake home’s vertical brick veneer walls and massive brick veneer chimney chase and we can honestly attest, LastiSeal saved our home! I came back to buy some more because Tropical Storm Arthur just blew through and CLEAR EVIDENCE as to the effectiveness of this LastiSeal product was discovered in THE ONE SMALL AREA I did not spray LastiSeal back in 2017-18 - a 2’ tall by 5’ wide rectangle where we had a firewood rack on a lower back deck which I did not empty and move but which is no longer there. For 4 straight days we had non-stop rain pushed by NNE winds off our lake as if Mother Nature decided to pressure wash the Earth - THE ONLY SPOT where the brick veneer was saturated was that 2’x5’ spot I missed spraying with LastiSeal several years back!!!!!!! Since I’m here, I happened to see a 1* review complaining about LastiSeal supposedly not working on sandstone steps and I can only say the only place we have had Leaks continue is on our front porch steps BUT NOT DUE TO ANY FAULT OF the LastiSeal but rather, BECAUSE OF PIN-size AND LARGER HOLES left by shoddy masons, a disreputable builder and the same Lack of Craftsmanship cited in our original review (above). I am so so,d on this darn stuff that the next time we pressure wash and seal the massive (50+ yards by 8’ tall brick veneer retaining wall along our driveway we are forgoing ever using any “silica” or “siloxane” -based sealers (which are BROKEN DOWN BY after several years by UV light) and sticking with the LastiSeal - the product MORE THAN PAYS FOR ITSELF IN THE LONG RUN! Best o’ Success to any poor souls trying to stop leaking masonry!
Review: Finally a waterproofing that WORKS?! - For now REALLY like, test of time will tell. I never give 5 stars. Always room for improvement but after a month very good. Went on FINE with hand sprayer. Edit: After 5 months STILL working Toss the others and don't waste your time with them.

## Features

- DEEP SEALS & STRENGTHENS FROM WITHIN – Deep-penetrating polyester/polyurethane formula cures within the pore structure of brick, concrete, block, mortar, and porous stone to help strengthen masonry from within. Helps reduce dusting and wear while extending the service life of treated surfaces.
- LONG-LASTING 15-YEAR PROTECTION – Designed to provide up to 15 years of protection on properly prepared porous masonry surfaces. Unlike topical sealers and surface coatings that can wear away over time, LastiSeal penetrates below the surface and becomes part of the substrate. Will not peel, chip, or flake.
- WATER-RESISTANT YET BREATHABLE – Helps reduce water absorption and moisture intrusion while allowing trapped moisture vapor to escape. Unlike film-forming coatings, LastiSeal penetrates below the surface to help protect masonry without sealing in moisture. Helps reduce conditions that contribute to efflorescence and concrete dusting.
- FOR BRICK, CONCRETE, BLOCK & POROUS STONE – Designed for brick, concrete, pavers, mortar, grout, stucco, concrete block, cinder block, CMU, split-face block, limestone, sandstone, cultured stone, & other absorbent masonry surfaces. Ideal for chimneys, retaining walls, driveways, patios, pool decks, walkways, and other exposed masonry structures.
- NATURAL FLAT FINISH – NO FILM, NO GLOSS – Preserves the natural appearance and texture of brick, concrete, pavers, block, and porous stone without creating a glossy coating or slippery surface. Because LastiSeal penetrates below the surface, it does not form a film that can peel or flake.
- IDEAL FOR AGING & WEATHERED MASONRY – Deep-penetrating formula helps preserve older brick, concrete, mortar, and porous stone by reducing water absorption and supporting long-term masonry protection. Popular for restoration, preservation, maintenance, and historic masonry projects.
- WATER-BASED & EASY TO APPLY – Apply with a low-pressure sprayer or paint roller to interior and exterior masonry surfaces. Low-odor, non-flammable formula is ideal for garages, patios, driveways, chimneys, retaining walls, and other residential or commercial applications.
- IDEAL FOR CHIMNEYS, RETAINING WALLS & MASONRY RESTORATION – Designed for chimneys, retaining walls, brick facades, masonry walls, stone structures, and other porous masonry exposed to weather and moisture. Popular for residential maintenance, historic masonry restoration, preservation projects, and long-term protection of aging masonry surfaces.
- RESIDENTIAL, COMMERCIAL & INDUSTRIAL USE – Suitable for homes, warehouses, workshops, commercial buildings, industrial facilities, maintenance shops, and other high-exposure masonry environments. Designed for long-term protection of concrete, brick, block, mortar, and porous stone surfaces.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007C4QEMK |
| Best Sellers Rank | #387,420 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,104 in Hardware Sealers |
| Brand | RadonSeal |
| Brand Name | RadonSeal |
| Color | Clear/Flat finish |
| Compatible Material | Concrete, Clay Brick, Pavers, Porous Stone |
| Customer Reviews | 4.1 out of 5 stars 189 Reviews |
| Included Components | 2 x 2.5-gal jugs |
| Item Dimensions | 13 x 10 x 15 inches |
| Item Form | Liquid |
| Item Weight | 45 pounds |
| Item dimensions L x W x H | 13 x 10 x 15 inches |
| Manufacturer | Novion |
| Material | Polyester/Polyurethane Polymers |
| Material Type | Polyester/Polyurethane Polymers |
| Model | 140 |
| Number of Items | 2 |
| Part Number | 140 |
| Style | Flat/Natural Finish |
| Style Name | Flat/Natural Finish |
| Surface Recommendation | Concrete, Brick, Pavers, Masonry, Stone |
| UPC | 856255006065 |
| Unit Count | 640 Fluid Ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** RadonSeal
- **Item Weight:** 45 Pounds
- **Item dimensions L x W x H:** 13 x 10 x 15 inches
- **Material:** Polyester/Polyurethane Polymers
- **Style:** Penetrating Sealer

## Images

![LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish - Image 1](https://m.media-amazon.com/images/I/71nfj0jsO5L.jpg)
![LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish - Image 2](https://m.media-amazon.com/images/I/81bjXDAQ+dL.jpg)
![LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish - Image 3](https://m.media-amazon.com/images/I/813eI6ZG6VL.jpg)
![LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish - Image 4](https://m.media-amazon.com/images/I/91aGCJj9MnL.jpg)
![LastiSeal Brick & Concrete Sealer (5 Gal) – Deep Seals and Strengthens Brick, Concrete, Pavers & Porous Stone – 15-Year Protection – Natural Flat Finish - Image 5](https://m.media-amazon.com/images/I/81rwYFuH5KL.jpg)

## Questions & Answers

**Q: Will this still allow efflorescence to come up in pavers? I don't want to trap efflorescence in the stones, but I want to protect them immediately.**
A: This product appears to meet its description, it's absorbed into to brick & nothing appears to go in or come out. It seals well. I've had it on the walls for one year. You're welcome.

**Q: Beyond sealing does LastiSeal bring out the color of my concrete pavers? Gloss??**
A: Very little gloss. I don't know if it will bring out the color of your pavers as I just on the  concrete garage floor and driveway.

**Q: does it have a gloss finish**
A: No. The intention of the sealer is penetrate into porous building materials (hence the word porous) without changing the look or friction of the surface.

**Q: Will this product turn white/cloudy when exposed to water?**
A: Not at all. It's a milky color in the bottle but it doesn't turn anything white that I applied it to. What I did notice was the mortar between the bricks feels differently when I run my finger across it. Little grains that used to rub off before don't now. And the water seems to run right off

## Customer Reviews

### ⭐⭐⭐⭐⭐ Is It Possible to Give SIX STARS?!!!!
*by A***R on September 18, 2018*

This stuff is unbelievable! We are the second owners of our entire brick home and were devastated to have wind driven rain coming through the exterior brick veneer and into the living spaces (we didn’t find out til after settlement the p.o.s. builders (Providence Builders: owner K. Annas and supervisor foreman M. Kirby of Hickory, NC) had their builders licenses CONFISCATED by the N.C. Atty General!!!) Our research as well as our experience told us other sealers break down quickly under UV sunlight and products requiring mineral spirits cleanup are a nightmare when using sprayers. Very trepidatiously we ordered our first 5 gallons and followed the “wet on wet” technique described by reviewer “Coltrane”. We sprayed it on, gave it some time to soak in and BEFORE the previous layer started to “dry” out, we’d go over it again, with another light spray (picture the patience it requires to use light coats through a can of spray paint, in order to get a truly good (no runs) finish). WELL, HURRICANE FLORENCE JUST RIPPED THROUGH HERE AND, GUESS WHAT - WE ACTUALLY WATCHED AS THE EXTERIOR WALLS WE APPLIED LASTI-SEAL HAD THE WIND-DRIVEN RAIN DROPS LITERALLY “BOUNCING OFF” INCHES OFF THE WALL. And, no leaks through the veneer in those areas. That was it - we are now in the process of spraying the entire house with Lasti Seal (satin). Starting with the monolithic brick veneers with a NorthEastern exposure. It is going to be a huge product but,we are convinced Lasti-Seal is literally going to save our home! (Oh yeah, we had our chimney sweeps get up on the roof and apply LastiSeal to our brick chimney and they are amazed - so, look for LastiSeal to soon be picked up by chimney sweeps across the nation, I have no doubts (the stuff they endorse now breaks down under UV sunlight.) Finally, the fact that this stuff is water cleanup makes it ALMOST too good to be true. But, it ain’t and it is true! UPDATE: 2020-05-24: well, It’s coming on 2 and 3 years since we “wet on” technique-hand pump sprayed LastiSeal onto our monolithic, NorthEast facing lake home’s vertical brick veneer walls and massive brick veneer chimney chase and we can honestly attest, LastiSeal saved our home! I came back to buy some more because Tropical Storm Arthur just blew through and CLEAR EVIDENCE as to the effectiveness of this LastiSeal product was discovered in THE ONE SMALL AREA I did not spray LastiSeal back in 2017-18 - a 2’ tall by 5’ wide rectangle where we had a firewood rack on a lower back deck which I did not empty and move but which is no longer there. For 4 straight days we had non-stop rain pushed by NNE winds off our lake as if Mother Nature decided to pressure wash the Earth - THE ONLY SPOT where the brick veneer was saturated was that 2’x5’ spot I missed spraying with LastiSeal several years back!!!!!!! Since I’m here, I happened to see a 1* review complaining about LastiSeal supposedly not working on sandstone steps and I can only say the only place we have had Leaks continue is on our front porch steps BUT NOT DUE TO ANY FAULT OF the LastiSeal but rather, BECAUSE OF PIN-size AND LARGER HOLES left by shoddy masons, a disreputable builder and the same Lack of Craftsmanship cited in our original review (above). I am so so,d on this darn stuff that the next time we pressure wash and seal the massive (50+ yards by 8’ tall brick veneer retaining wall along our driveway we are forgoing ever using any “silica” or “siloxane” -based sealers (which are BROKEN DOWN BY after several years by UV light) and sticking with the LastiSeal - the product MORE THAN PAYS FOR ITSELF IN THE LONG RUN! Best o’ Success to any poor souls trying to stop leaking masonry!

### ⭐⭐⭐⭐ Finally a waterproofing that WORKS?!
*by S***E on July 18, 2015*

For now REALLY like, test of time will tell. I never give 5 stars. Always room for improvement but after a month very good. Went on FINE with hand sprayer. Edit: After 5 months STILL working Toss the others and don't waste your time with them.

### ⭐⭐⭐⭐⭐ very good product
*by L***A on February 18, 2017*

I own a farm house, built in 1880 with a 135 year old brick foundation. I was noticing water puddles in the basement after heavy rains, which I knew was not good, in addition to brick dust on the perimeter. I called the company who manufacturers this product to discuss my situation. They were very accessible and willing to spend the time to provide advise. While they couldn't give me a guarantee on 135 year old brick, they told me the product was my best bet over anything I'd find at Lowes/Home Depot. I gave them my square footage and they inform me very accurately how much sealer to order. They also advise me to re-point the bricks in the weak spots prior to applying, to use "softer" mortar than today's standard based on the brick's age, and that on the first pass the bricks would absorb the most. Give it 24 hrs and then apply a second coat. The product was shipped to me quickly once ordered. My contractor followed all these steps and the sealer was applied by the end of October in preparation for winter. 4 months later, after A LOT of rain and snowfall, I have yet to see any water in the basement. It seems to have worked great and I am grateful. The absolute best part for me was the sealer is clear, not a paint that covers and changes the brick coloration. That was an important point for me aesthetically. I hope this sealer holds up, but I am pleased it solved a difficult problem at a reasonable price and the company was knowledgeable and pleasant to interact with regarding my questions.

## Frequently Bought Together

- LastiSeal Brick & Concrete Sealer - Waterproofs & Strengthens Brick, Concrete, Pavers, Porous Stone - Flat/Natural - 5 Gals
- Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White
- LastiSeal Brick & Concrete Sealer 2.5-gal – Flat Finish. Waterproofs & Strengthens Brick, Concrete, Pavers. Interior/Exterior.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-29*