--- product_id: 238713604 title: "MasonryDefender Chimney Flashing Sealer - Flexible Chimney Sealant Protects Against Water Leaks - 2.2 kg" brand: "masonrydefender" price: "$151.57" currency: USD in_stock: true category: "Masonry Defender" url: https://www.desertcart.us/products/238713604-masonrydefender-chimney-flashing-sealer-flexible-chimney-sealant-protects-against-water store_origin: US region: United States of America --- # covers up to 14 sq. ft. per 2.2 kg 100% waterproof barrier flexible, crack-resistant formula MasonryDefender Chimney Flashing Sealer - Flexible Chimney Sealant Protects Against Water Leaks - 2.2 kg **Brand:** masonrydefender **Price:** $151.57 **Availability:** ✅ In Stock ## Summary > 💧 Seal smart, stay dry—your chimney’s best defense against leaks! ## Quick Answers - **What is this?** MasonryDefender Chimney Flashing Sealer - Flexible Chimney Sealant Protects Against Water Leaks - 2.2 kg by masonrydefender - **How much does it cost?** $151.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/238713604-masonrydefender-chimney-flashing-sealer-flexible-chimney-sealant-protects-against-water) ## Best For - masonrydefender enthusiasts ## Why This Product - Trusted masonrydefender brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Maximized Coverage:** Generous 2.2 kg container covers up to 14 sq. ft., delivering premium protection without frequent reapplications. - • **Sleek Black Finish:** Discreetly blends with roofing materials for a professional, clean look that stands out for all the right reasons. - • **Seal with Confidence:** Creates a rock-solid waterproof shield where your chimney meets the roofline—no more leaks, no more worries. - • **Flexibility That Lasts:** Engineered to stay pliable and crack-free over time, ensuring your home stays protected season after season. - • **Fast & Effortless Application:** Brush on easily with no special tools—perfect for busy pros who demand quick, reliable results. ## Overview MasonryDefender Chimney Flashing Sealer is a flexible, long-lasting black sealant designed to create a waterproof barrier at chimney rooflines. It resists cracking and brittleness, covers up to 14 sq. ft. per 2.2 kg, and applies easily with a brush, making it an essential solution for preventing water damage and maintaining your home’s structural integrity. ## Description MasonryDefender Chimney Flashing Sealer - Flexible Chimney Sealant Protects Against Water Leaks - 2.2 kg - desertcart.com ## Features - SEALS CHIMNEY FLASHINGS: Creates a waterproof barrier to stop water penetration where chimney meets roof line. Ideal for chimney flashing and roof flashing sealant needs. - FLEXIBLE LONG-LASTING SEAL: Won't crack or chip. This chimney sealer stays flexible over time and resists becoming brittle, ensuring durable protection for years. - PREVENTS CHIMNEY LEAKS: Helps prevent leaks at the roofline by sealing vulnerable areas fast. Use as a chimney waterproofing sealant to protect your home from water damage. - EASY APPLICATION PROCESS: Simple to apply with a paint brush. Just paint the chimney flashing sealer around the base for long-lasting, weather-resistant coverage. - BLACK FINISH & COVERAGE: Available in black and covers up to 14 sq. ft. per half gallon container. Perfect for chimney roof flashing and masonry surfaces. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08F832CKL | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #77,269 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #282 in Hardware Sealers | | Customer Reviews | 4.5 4.5 out of 5 stars (142) | | Date First Available | August 4, 2020 | | Item Weight | 5.3 pounds | | Manufacturer | SaverSystems | | Package Dimensions | 6.46 x 6.1 x 5.39 inches | ## Images ![MasonryDefender Chimney Flashing Sealer - Flexible Chimney Sealant Protects Against Water Leaks - 2.2 kg - Image 1](https://m.media-amazon.com/images/I/61me+oHtigL.jpg) ## Questions & Answers **Q: Should you use fabric reinforcement tape with this? Like is recommended with FlashSeal?** A: Are you talking about the mesh material. First cut your pieces or have a pair of scissors I find her easier to use. Get a cheap paint brush take your time paint above flashing onto the brick above the flashing and lay the mesh over. You got about 10-20 seconds to play with it …after that she gets hard to work with, and you’ll make it look worse. If you need to do a second coat wait until it dries then go back and put a second coat. If you try to go back and add more before it’s dry you’ll just mess it up. This is the type of information it takes years to acquire through trial and error. if you don’t do it right, it’s a pain to remove and then you’re really getting into a sticky situation. So recap. Depending on the size of the chimney, and I would do med/ large sections at a time. I have your pieces ready put your first coat on lay you mesh pieces and make sure you put your second coat thick enough that you can’t see the mesh. ## Frequently Bought Together - MasonryDefender Chimney Flashing Sealer - Flexible Coating That Protects Chimney Flashings from Water Leaks - MasonryDefender Chimney Crown Sealer - Brushable Sealant Fixes Cracked Chimney Tops & Prevents Chimney Leaks - MasonryDefender Chimney Brick Sealer, Clear Water-Based Siloxane Sealer - Breathable Waterproofer for All Exterior, Vertical Masonry Surfaces - 1 Gal --- ## 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.us/products/238713604-masonrydefender-chimney-flashing-sealer-flexible-chimney-sealant-protects-against-water](https://www.desertcart.us/products/238713604-masonrydefender-chimney-flashing-sealer-flexible-chimney-sealant-protects-against-water) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-06*