--- product_id: 348576302 title: "MasonryDefender Chimney Flashing Sealer - Flexible Coating That Protects Chimney Flashings from Water Leaks" brand: "masonrydefender" price: "S$216" currency: SGD in_stock: true category: "Masonry Defender" url: https://www.desertcart.sg/products/348576302-masonrydefender-chimney-flashing-sealer-flexible-coating-that-protects-chimney-flashings store_origin: SG region: Singapore --- # flexible, crack-resistant coating 100% waterproof seal easy brush-on application MasonryDefender Chimney Flashing Sealer - Flexible Coating That Protects Chimney Flashings from Water Leaks **Brand:** masonrydefender **Price:** S$216 **Availability:** ✅ In Stock ## Summary > 🛡️ Seal the deal, stop the leaks, and protect your home like a pro! ## Quick Answers - **What is this?** MasonryDefender Chimney Flashing Sealer - Flexible Coating That Protects Chimney Flashings from Water Leaks by masonrydefender - **How much does it cost?** S$216 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/348576302-masonrydefender-chimney-flashing-sealer-flexible-coating-that-protects-chimney-flashings) ## 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 - • **Broad Coverage:** Covers 14 sq. ft. per half gallon, giving you more protection with less product. - • **Flexible Durability:** Remains pliable over time, resisting cracks and chips for lasting defense. - • **Fast Dry & Cure Time:** Dries to touch in under an hour and fully cures within 12 hours—get back to life faster. - • **Effortless Application:** Brush on smoothly with no mess—perfect for DIY pros and weekend warriors alike. - • **Ultimate Leak Protection:** Stops water penetration where chimneys meet roofs—no more drip drama. ## Overview MasonryDefender Chimney Flashing Sealer is a flexible, waterproof coating designed to protect chimney flashings and roof penetrations from water leaks. Easy to apply with a paint brush, it stays flexible over time to prevent cracking and covers 14 sq. ft. per half gallon. Dries quickly and cures fully within 12 hours, providing long-lasting, reliable protection against water damage. ## Description MasonryDefender Chimney Flashing Sealer is a flexible, waterproof coating that is applied to chimney flashings (where the chimney meets the roof ) to protect against water leaks. This permanently flexible membrane is easy to apply with a paint brush and will last for years. Available in black. This product not only seals chimney flashings, but can also be used around any other protrusions in roofs including skylights or vents. It provides a long lasting coating that is ready to use and can easily be applied with a paint brush. Covers 14 sq. ft. per half gallon (assuming 2 coats). Dries to touch in 30 - 60 minutes. Product cures completely within 6 - 12 hours depending on temperature/humidity. Caution: Do not use in cold, damp, rainy weather or product may wash away. Allow at least 12 hours of dry, clear weather for proper curing. ## Features - Seals & Waterproofs Chimney Flashings - Stops Water Penetration Where Chimneys Meet the Roof Line - Flexible - Won't Crack or Chip - Stays Flexible Over Time, Doesn't Harden and Become Brittle - Helps Prevent Chimney Leaks - Chimneys Frequently Leak Where the Roofline Meets the Chimney - Seal it to Stop Water Fast - Easy to Apply With a Paint Brush - Simply Paint Product Around Base of Chimney for Long Lasting Protection - Available in Black & Covers 14 Sq. Ft. Per Half Gallon Container ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08F832CKL | | ASIN | B08F832CKL | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.6 4.6 out of 5 stars (148) | | Customer reviews | 4.6 4.6 out of 5 stars (148) | | Date First Available | 25 July 2021 | | Date First Available | 25 July 2021 | | Item Weight | 2.46 Kilograms | | Manufacturer | SaverSystems | | Manufacturer | SaverSystems | | Package Dimensions | 17.09 x 16 x 14.71 cm; 2.46 kg | | Package Dimensions | 17.09 x 16 x 14.71 cm; 2.46 kg | ## Images ![MasonryDefender Chimney Flashing Sealer - Flexible Coating That Protects Chimney Flashings from Water Leaks - 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.sg/products/348576302-masonrydefender-chimney-flashing-sealer-flexible-coating-that-protects-chimney-flashings](https://www.desertcart.sg/products/348576302-masonrydefender-chimney-flashing-sealer-flexible-coating-that-protects-chimney-flashings) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-15*