--- product_id: 18312923 title: "ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon" brand: "chimneyrx" price: "520.35 DT" currency: TND in_stock: true reviews_count: 9 category: "Chimneyrx" url: https://www.desertcart.tn/products/18312923-chimneyrx-300054-brushable-flashing-repair-sealant-black-elastomeric-waterproof-coating store_origin: TN region: Tunisia --- # Bonds to shingles, brick & metal Elastomeric waterproof barrier Brush-on easy application ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon **Brand:** chimneyrx **Price:** 520.35 DT **Availability:** βœ… In Stock ## Summary > πŸ’§ Seal smart, stay dryβ€”your roof’s new best friend! ## Quick Answers - **What is this?** ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon by chimneyrx - **How much does it cost?** 520.35 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/18312923-chimneyrx-300054-brushable-flashing-repair-sealant-black-elastomeric-waterproof-coating) ## Best For - chimneyrx enthusiasts ## Why This Product - Trusted chimneyrx brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Quick-Dry Efficiency:** Dries in just 12 hours, so your repairs are done fast. - β€’ **Leakproof Flexibility:** Elastomeric formula stays pliableβ€”no cracks, no leaks. - β€’ **Effortless Application:** Brushable texture means no mixing, no messβ€”just smooth sealing. - β€’ **Reliable Weather Shield:** Protects vents, skylights, and chimneys from harsh rain and weather. - β€’ **Universal Surface Bonding:** Seals asphalt shingles, aluminum flashing, brick & more with permanent adhesion. ## Overview ChimneyRx 300054 is a black elastomeric waterproof sealant designed for durable, flexible leak protection around chimneys, vents, and skylights. It bonds permanently to multiple roofing materials including asphalt shingles, aluminum flashing, and brick. Brush-on application requires no mixing and dries within 12 hours, covering approximately 14 sq ft per 1/2 gallon. Its crack-resistant formula ensures long-lasting weatherproofing, making it an essential fix for professional-grade roof maintenance. ## Description desertcart.com: ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon : Industrial & Scientific Review: Great Product to Solve/Prevent Leaks Around Chimney Flashing - I really like this product! I like to maintain the flashing around my masonry chimney and I've always done it with a dab of some product here and there, but it is easy to miss an area that might have a gap if it is small. Last year we had an 11" rain here in WI and sure enough, just a small amount of water did leak in around the chimney. With this product you "paint" it over the entire flashing and where it meets the roof and the brick, so there are no missed areas - the entire thing is coated. The product applied quite easily - it's is fairly thick, but it did go on and brush out with a regular paint brush. I followed the instructions and masked the roof and the brick with duct tape and then applied the product. Once done, just remove the tape and you have an amazing looking job! In the on-line instructions the coverage is listed at 14 - 18 sq ft at a thickness of 1/8" for the 1 gallon size. In the desertcart listing it is listed as 12 sq ft, but the product is only 1/2 gallon, so that is not correct. I did 10 sq ft and used about half of the 1/2 gallon container. I would think I must have applied it about 1/16" thick. It is very hard to get an exact thickness when you are applying it. Review: It works! - Loved this product. Fixed leaky chimney! ## Features - ELASTOMERIC WATERPROOF SEALANT: Seals chimney flashing with a durable, flexible barrier; this chimney sealant prevents leaks around chimneys, stacks, vents, and skylights, providing protection against water and harsh weather - STAYS FLEXIBLE, WON'T CRACK: Unlike tar-based sealants, this chimney repair sealer has an elastomeric formula that stays pliable over time, resisting brittleness and cracking that can cause leaks; it requires no mixing or special bonding agents - BONDS TO MULTIPLE SURFACES: This waterproofing sealant adheres permanently to asphalt shingles, aluminum flashing, brick, and other roofing materials for a secure, long-lasting seal - EASY APPLICATION & CLEANUP: Our chimney flashing sealant applies easily with a brush (not included), making repairs quick and simple; cleanup is hassle-free with just soap and water, saving you time and effort - DRY TIME & COVERAGE: This waterproof coating sealant dries in 12 hours under dry weather conditions, with a temperature range of 45-90Β°F; each 1/2-gallon plastic container covers approximately 14 square feet ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0060NKMOU | | Best Sellers Rank | #58,249 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #85 in Industrial Coatings | | Brand | CHIMNEYRX | | Brand Name | CHIMNEYRX | | Color | Black | | Compatible Material | Asphalt Shingles, Aluminum Flashing, Brick, Other Chimney and Roofing Materials, All | | Customer Reviews | 4.5 out of 5 stars 296 Reviews | | Item Dimensions | 12 x 12 x 12 inches | | Item Form | Liquid | | Item dimensions L x W x H | 12 x 12 x 12 inches | | Manufacturer | SaverSystems | | Material | Plastic | | Material Type | Plastic | | Model | BHBUKPPAZINH2401 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 300054 | | Surface Recommendation | Aluminum Flashing, Asphalt Shingles, Brick | | UPC | 709057942645 709057941648 | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** CHIMNEYRX - **Item Form:** Liquid - **Item dimensions L x W x H:** 12 x 12 x 12 inches - **Material:** Plastic - **Water Resistance Level:** Water Resistant ## Images ![ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon - Image 1](https://m.media-amazon.com/images/I/81+13WKLBRL.jpg) ![ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon - Image 2](https://m.media-amazon.com/images/I/71dAEaX5VoL.jpg) ![ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon - Image 3](https://m.media-amazon.com/images/I/71z3FnIeHKL.jpg) ![ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon - Image 4](https://m.media-amazon.com/images/I/71IUh7QJYeL.jpg) ![ChimneyRx 300054 Brushable Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon - Image 5](https://m.media-amazon.com/images/I/71nOuZgw6eL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product to Solve/Prevent Leaks Around Chimney Flashing *by T***R on August 17, 2019* I really like this product! I like to maintain the flashing around my masonry chimney and I've always done it with a dab of some product here and there, but it is easy to miss an area that might have a gap if it is small. Last year we had an 11" rain here in WI and sure enough, just a small amount of water did leak in around the chimney. With this product you "paint" it over the entire flashing and where it meets the roof and the brick, so there are no missed areas - the entire thing is coated. The product applied quite easily - it's is fairly thick, but it did go on and brush out with a regular paint brush. I followed the instructions and masked the roof and the brick with duct tape and then applied the product. Once done, just remove the tape and you have an amazing looking job! In the on-line instructions the coverage is listed at 14 - 18 sq ft at a thickness of 1/8" for the 1 gallon size. In the Amazon listing it is listed as 12 sq ft, but the product is only 1/2 gallon, so that is not correct. I did 10 sq ft and used about half of the 1/2 gallon container. I would think I must have applied it about 1/16" thick. It is very hard to get an exact thickness when you are applying it. ### ⭐⭐⭐⭐⭐ It works! *by M***L on June 27, 2026* Loved this product. Fixed leaky chimney! ### ⭐⭐⭐⭐⭐ Works well *by B***N on October 10, 2025* Worked great. Looks good and sealed the chimney and flashing. ## Frequently Bought Together - ChimneyRx 300054 Brushable Chimney Flashing Repair Sealant – Black Elastomeric Waterproof Coating Leak Protection for Chimneys, Vents & Skylights - Bonds to Shingles, Bricks, & More - 1/2 Gallon - ChimneyRx 300014 Brushable Chimney Crown Repair – Elastomeric & Waterproof Coating for Crowns & Masonry - Fast-Setting & Long-Lasting Protection Crack & Leak Prevention - 1 Gallon - ChimneyRx 300119 Masonry Chimney Water Repellent - Siloxane Based, Non-Film-Forming, Breathable, and Transparent Waterproof Coating for Brick Chimneys & Other Vertical Surfaces - 1 Gallon --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/18312923-chimneyrx-300054-brushable-flashing-repair-sealant-black-elastomeric-waterproof-coating](https://www.desertcart.tn/products/18312923-chimneyrx-300054-brushable-flashing-repair-sealant-black-elastomeric-waterproof-coating) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-08*