---
product_id: 27298944
title: "LastiSeal Brick & Concrete Sealer 2.5-gal – Flat Finish. Waterproofs & Strengthens Brick, Concrete, Pavers. Interior/Exterior."
brand: "radonseal"
price: "R6523"
currency: ZAR
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.za/products/27298944-lastiseal-brick-and-concrete-sealer-2-5-gal-flat-finish
store_origin: ZA
region: South Africa
---

# 15 years protection Waterproof up to 4 inches 250 sq.ft coverage LastiSeal Brick & Concrete Sealer 2.5-gal – Flat Finish. Waterproofs & Strengthens Brick, Concrete, Pavers. Interior/Exterior.

**Brand:** radonseal
**Price:** R6523
**Availability:** ✅ In Stock

## Summary

> 🔒 Seal the Deal with LastiSeal!

## Quick Answers

- **What is this?** LastiSeal Brick & Concrete Sealer 2.5-gal – Flat Finish. Waterproofs & Strengthens Brick, Concrete, Pavers. Interior/Exterior. by radonseal
- **How much does it cost?** R6523 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/27298944-lastiseal-brick-and-concrete-sealer-2-5-gal-flat-finish)

## 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

- • **Lasting Defense:** Experience up to 15 years of invisible protection with just one application.
- • **Weather Warrior:** Defends against rain, snow, and freeze/thaw cycles, ensuring year-round safety.
- • **Eco-Friendly Formula:** Water-based, non-toxic, and safe for people, plants, and pets.
- • **Strength Meets Style:** Not only seals but strengthens porous materials, enhancing durability and longevity.
- • **Versatile Application:** Perfect for patios, driveways, and more—protects both indoor and outdoor surfaces.

## Overview

LastiSeal Brick & Concrete Sealer is a high-performance, water-based solution designed to waterproof and strengthen various porous materials, including brick and concrete. With a flat finish and up to 15 years of protection, it forms a durable barrier against water damage and staining, making it ideal for both residential and commercial applications. Easy to apply and safe for the environment, LastiSeal is your go-to choice for long-lasting masonry protection.

## Description

Full description not available

## Features

- Long-Lasting, Invisible Protection: Up to 15 years of protection in a single application; lasts 10 x longer than acrylic sealers; twice as long as silane/siloxane; natural/flat finish.
- Hardens and Strengthens: LastiSeal not only seals but strengthens porous materials like dusty concrete, antique brick, and sandstone, improving durability and extending the life of masonry.
- Protects Concrete, Brick, Pavers, & Porous Stone: LastiSeal forms a durable, water-resistant barrier that penetrates up to 4 inches preventing water damage, cracking, and staining.
- Unique Formula: Water-based, polyester and polyurethane penetrating polymers; will not peel, yellow, or fade; treated surfaces can be painted with acrylic or epoxy; non-film forming; non-slip.
- Weather-Resistant for all Seasons: Whether facing rain, snow, or harsh freeze/thaw cycles, LastiSeal keeps your brick and concrete surfaces safe from weather-related damage year-round.
- Easy to apply, fast-drying formula: Apply with a hand-pump sprayer or roller; dries quickly; no solvents, nonflammable, no odor; people, plant, and pet safe.
- Versatile: Use LastiSeal on patio pavers, walkways, driveways, brick walls & facades, pool decks, chimneys, fireplaces, & more; protects a wide range of outdoor and indoor applications.
- Perfect for residential and commercial waterproofing: Whether for homes, businesses, or industrial properties, LastiSeal provides reliable waterproofing for brick and concrete surfaces, ensuring protection in any setting.
- Effective against water and efflorescence: Prevents water absorption and the formation of efflorescence, helping to preserve the integrity and appearance of your outdoor and indoor masonry.
- Excellent Coverage Rates: Up to 250 sq.ft per gallon.

## Product Details

- **Material:** Polyurethane & Polyester Blend
- **Brand:** RadonSeal
- **Style:** Penetrating Sealer
- **Item Weight:** 23 Pounds
- **Water Resistance Level:** Waterproof

## Images

![LastiSeal Brick & Concrete Sealer 2.5-gal – Flat Finish. Waterproofs & Strengthens Brick, Concrete, Pavers. Interior/Exterior. - Image 1](https://m.media-amazon.com/images/I/61bJFkkdwCL.jpg)

## Questions & Answers

**Q: What's the cleaning procedure prior to using LastiSeal? I have pavers and usually just pressure wash a few days before**
A: If the pavers are generally clean and in good shape, then pressure washing is not always necessary. As noted on the instructions:

SURFACE CONDITIONS

Substrate should be dry prior to sealer application. Brick, concrete and porous masonry may require SEVERAL days to dry after heavy rain or pressure washing. Avoid rain for 24 hours after sealer application. Ambient air and surface temperatures must be above 45º and below 100º F during the application and for 24 hours after. Avoid applying to hot surfaces in direct sunlight, or in strong winds and excessive humidity. New concrete should be allowed to cure for at least 28 days.

SURFACE PREP

Surfaces must be clean, bare and porous. Remove paints, sealers, curing compounds, adhesives, oil, grease, mold, efflorescence and other contaminants that might interfere with the penetration of the sealer. Hard-troweled concrete surfaces require chemical etching or mechanical abrasion to increase porosity. A sufficiently porous surface should readily absorb the sealer. Use PowerEtch Concrete Etcher & Cleaner to obtain a proper surface profile. If chemical cleaners or concrete etchers are used, be sure to throughly rinse and remove them prior to sealer application. Mask surfaces not intended to be sealed. Vacuum or blow off excessive dust and loose particles.

Cheers,
----------
Craig - Product Tech
RadonSeal

**Q: Will it work for a brick patio that we are enclosing for an Arizona room or porch**
A: LastiSeal will seal any porous masonry. Bricks, blocks, sandstone, limestone....if its porous, LastiSeal is an excellent choice.

**Q: Can this product be used in cold climates?  I read that sealers on brick in cold climates can trap the water and cause the brick to flake.**
A: I am using it in Wilmington, NC so can not give any feedback of using it in cold weather. It is doing exactly what I wanted it to do though

**Q: Does concrete sealer work on rock walkways?**
A: LastiSeal Brick & Concrete Sealer is a nano-chemical, PENETRATING sealer. It can be applied to POROUS surfaces/materials; poured concrete, concrete blocks, brick, mortar, pavers, limestone, sandstone, etc. It is not advised to use this product over rock surfaces. Rock is dense and simply will not absorb the product internally.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Results are not obvious
*by D***7 on October 15, 2024*

I applied this to very old patio bricks, and it has actually helped divert rain runoff to a center drain. The applied matte finish it is undetectable from bare brick. It’s not magic, but if you have good drainage already, this helps prevent mildew/algae and keeps water out of porous brick. It also seems to help wash soil and other debris away. When applied and allowed to dry, it is hard to tell the difference between treated and untreated surface, so you need to mark where you start and stop if you do not do the whole thing in one pass. It is super easy to apply if you use a $20 garden sprayer and wash the sprayer out between applications.

### ⭐⭐⭐⭐⭐ Just what  I needed
*by W***3 on July 22, 2025*

Sealed the stone behind and under my wood stove with 2 coats. Had enough left for my son in law to do their stone fireplace surround. Made the white stone nice and smooth with no discoloration and sealed the grout.

### ⭐⭐⭐⭐⭐ Good product!
*by K***D on February 18, 2025*

Seals great!

## Frequently Bought Together

- LastiSeal Brick & Concrete Sealer 2.5-gal – Flat Finish. Waterproofs & Strengthens Brick, Concrete, Pavers. Interior/Exterior.
- 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 - Waterproofs & Strengthens Brick, Concrete, Pavers, Porous Stone - Flat/Natural - 5 Gals

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-24*