--- product_id: 711198387 title: "Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal" brand: "radonseal" price: "¥8744" currency: JPY in_stock: false category: "Radon Seal" url: https://www.desertcart.jp/products/711198387-lastiseal-brick-and-masonry-sealer-1-gal-for-all-sustainable store_origin: JP region: Japan --- # Water-based, eco-friendly formula Penetrates up to 10.2 cm for deep sealing 20-year waterproof protection warranty Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal **Brand:** radonseal **Price:** ¥8744 **Availability:** ❌ Out of Stock ## Summary > 🛡️ Seal smart, live worry-free—20 years of invisible strength! ## Quick Answers - **What is this?** Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal by radonseal - **How much does it cost?** ¥8744 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/711198387-lastiseal-brick-and-masonry-sealer-1-gal-for-all-sustainable) ## 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 - • **Invisible Armor:** Seals and strengthens without altering your brick or stone’s natural look—no gloss, no color change. - • **Long-Term Defense:** Backed by a 20-year warranty, it protects against freeze-thaw damage, spalling, and dusting. - • **Safe & Sustainable:** Non-toxic, non-flammable, and odorless—ideal for eco-conscious professionals. - • **Versatile Protection:** Perfect for indoor/outdoor use on brick, concrete, stone, grout, and even wood surfaces. - • **Effortless Application:** Spray, roll, or brush on with zero hassle for a flawless finish every time. ## Overview Lastiseal by RadonSeal is a premium water-based masonry sealer that penetrates deeply (up to 10.2 cm) into brick, concrete, stone, and masonry surfaces. Offering a 20-year waterproof warranty, it protects against freeze-thaw cycles, spalling, and dusting without changing the appearance of your surfaces. Safe, odorless, and easy to apply via spray, roll, or brush, Lastiseal is the go-to solution for long-lasting, invisible protection both indoors and outdoors. ## Description lastiseal is a unique, off-standards, sealing finish for bricks, concrete, mortar, stones and porous building materials benefits from a guaranteed waterproofing of 15 years. This water-based, polyester-polymer and polyurethane coating, penetrates up to 10.2 cm in brick, mortar, plaster, concrete and masonry. lastiseal fills the pores of the internal bond, the substrate and polymerization of hard plastic inside. A surface will seal the water and unless too rough, pearl for years to come. Unparalleled protection and longevity? Unlike paint or putty, lastiseal will not change the appearance or your brick, concrete or masonry. lastiseal does not form a surface film and leaves no glossy or colored finish on the surface. After drying (24 hours), the seal is almost permanent. Safe, Indoor/Outdoor Seal: Brick Walls and Floors, Indoor and Outdoor, Concrete Cellar, Concrete, Pavers, Driveways, Pool Decks, Patios, Stones, Tiles, Mortar, Koi Pound, Porous ## Features - Water-based, No Odor, Non-Toxic, Non-Flammable - Easy Application – Spray, Roll, or Brush - Protects outdoor/indoor brick, concrete, masonry, grout, and even wood! - Bonds and strengthens, protects against freeze-thaw, prevents spalling, dusting ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007C6PQWM | | Brand Name | RadonSeal | | Compatible Material | brick, concrete, stone, masonry | | Customer Reviews | 4.4 4.4 out of 5 stars (224) | | Item Form | Strip | | Manufacturer | RadonSeal | | Material Type | Plastic | | Model | 141 | | Part Number | 141 | | Style Name | classic | | UPC | 728028188219 | | Unit Count | 128.0 Fluid Ounces | ## Product Details - **Brand:** RadonSeal - **Item form:** Strip - **Material:** Plastic - **Style:** classic - **UPC:** 728028188219 ## Images ![Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal - Image 1](https://m.media-amazon.com/images/I/41JnFhlPKKL.jpg) ![Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal - Image 2](https://m.media-amazon.com/images/I/51JyJDI8N7L.jpg) ![Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal - Image 3](https://m.media-amazon.com/images/I/51Yvgb71AfL.jpg) ![Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal - Image 4](https://m.media-amazon.com/images/I/61KZRAgYQgL.jpg) ![Lastiseal Brick and masonry sealer (1-gal) | for all sustainable purposes, brick, concrete, stone and masonry sealer | 20 year warranty per Radonseal - Image 5](https://m.media-amazon.com/images/I/51A21fK3OWL.jpg) ## Frequently Bought Together - LastiSeal Brick & Masonry Sealer - All Purpose Brick, Concrete, Stone, & Masonry Sealer for Interior/Exterior Use - 15-Year Service Life (1-Gal) - Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White - MasonryDefender Chimney Crown Sealer - Brushable Sealant Fixes Cracked Chimney Tops & Prevents Chimney Leaks --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/711198387-lastiseal-brick-and-masonry-sealer-1-gal-for-all-sustainable](https://www.desertcart.jp/products/711198387-lastiseal-brick-and-masonry-sealer-1-gal-for-all-sustainable) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-18*