--- product_id: 741853145 title: "PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals" brand: "prosoco" price: "11100 kr" currency: ISK in_stock: true category: "Prosoco" url: https://www.desertcart.is/products/741853145-prosoco-fastflash-waterproof-and-airtight-fluid-applied-flashing-membrane-trusted store_origin: IS region: Iceland --- # 100% Waterproof Seal Cures in Wet Weather Bonds Without Priming PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals **Brand:** prosoco **Price:** 11100 kr **Availability:** ✅ In Stock ## Summary > 💧 Seal it right, seal it tight — the pro’s choice for leak-proof peace of mind! ## Quick Answers - **What is this?** PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals by prosoco - **How much does it cost?** 11100 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/741853145-prosoco-fastflash-waterproof-and-airtight-fluid-applied-flashing-membrane-trusted) ## Best For - prosoco enthusiasts ## Why This Product - Trusted prosoco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rain or Shine Ready:** Bonds and cures even on damp surfaces and tolerates rain immediately after application—no delays on your project. - • **UV-Resistant & Long-Lasting:** Withstands full UV exposure for up to 12 months with no shrinkage, staining, or yellowing—maintain flawless protection. - • **Simplify Complex Installations:** Eliminate the ‘origami’ of tapes and wraps with a fluid-applied membrane that speeds up window and joint flashing. - • **Universal Material Compatibility:** Seamlessly adheres to OSB, plywood, metal, concrete, and more without the hassle of priming. - • **Flawless Waterproofing, Zero Leaks:** Create a durable, weather-tight seal that professionals trust to keep water out. ## Overview PROSOCO FastFlash is a professional-grade, fluid-applied flashing membrane that delivers a waterproof, airtight seal across a wide range of building materials. It cures in wet conditions, bonds without priming, and resists UV exposure for up to 12 months, ensuring durable protection against water and air infiltration in rough openings, joints, and seams. ## Description PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals: desertcart.com: Tools & Home Improvement ## Features - To install windows, avoid the “origami” of building wrap and tapes – because if you don’t get it right, it will leak. This fluid-applied is the high-performance product used by professionals to get the job done right. - Use FastFlash independently or with compatible products PROSOCO Joint & Seam Filler or PROSOCO AirDam to prevent the unwanted movement of water and air through rough openings, joints, seams and penetrations. Produces a durable, weather-tight seal. - Bonds to most common building materials without priming, such as OSB, plywood, glass mat gypsum, magnesium oxide board (MgO), wood, galvanized steel, stainless steel, vinyl, polyvinyl chloride (PVC), concrete, masonry and anodized aluminum substrates. - Bonds and cures in wet weather, on damp substrates, and tolerates rain immediately after application. But, also breathable allowing damp surfaces to dry. - May be fully exposed to UV and weather for up to 12 months. No shrinkage. No staining. No yellowing. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00OBUFLCW | | Best Sellers Rank | #223,026 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #110 in Roof Flashings | | Brand Name | Prosoco | | Color | Red | | Compatible Material | Alloy Steel | | Container Type | Tube, Sausage | | Customer Reviews | 4.8 4.8 out of 5 stars (255) | | Item Form | Paste | | Item Package Quantity | 1 | | Item Type Name | Fastflash | | Item Weight | 1 Pounds | | Manufacturer | PROSOCO | | Material Type | Plastic | | Model | 70400-CASE | | Number of Pieces | 20 | | Part Number | PRS-70400-SAUSAGE | | UPC | 653429020113 653429020168 | | Unit Count | 20.0 Fluid Ounces | | Volume | 348 Fluid Ounces | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Prosoco - **Color:** Red - **Item Form:** Paste - **Item Package Quantity:** 1 - **Material:** Plastic ## Images ![PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals - Image 1](https://m.media-amazon.com/images/I/71EwJ6IjeyL.jpg) ![PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals - Image 2](https://m.media-amazon.com/images/I/61LDCu2aRSL.jpg) ![PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals - Image 3](https://m.media-amazon.com/images/I/61RljearqvL.jpg) ![PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals - Image 4](https://m.media-amazon.com/images/I/61VBUoqb2XL.jpg) ![PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals - Image 5](https://m.media-amazon.com/images/I/81c3e+cSY1L.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Frequently Bought Together - PROSOCO FastFlash | Waterproof and Airtight Fluid-Applied Flashing Membrane - Trusted by Professionals - Albion Engineering Company B12S20 B-Line Manual Sausage Caulking Gun, 20 oz, 12:1 Drive - Prosoco R-Guard Joint and Seam Filler --- ## 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.is/products/741853145-prosoco-fastflash-waterproof-and-airtight-fluid-applied-flashing-membrane-trusted](https://www.desertcart.is/products/741853145-prosoco-fastflash-waterproof-and-airtight-fluid-applied-flashing-membrane-trusted) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-07-18*