--- title: Fire-Resistant Facade Membrane | Breathable & UV-Resistant | Oskorp description: Discover Oskorp EmberEnvelope, a breathable, UV-resistant facade membrane designed for high-rise buildings requiring enhanced fire protection. Ensure safety and durability with our A2-rated solution. image: https://oskorp.com/hubfs/AdobeStock_253391891.jpeg --- [![Oskorp-Logo-Light-web](https://oskorp.com/hubfs/Oskorp-Logo-Light-web.png)](https://sales.oskorp.com?hsLang=en) - [ABOUT](https://oskorp.com/about?hsLang=en) - [ABOUT OSKORP](https://oskorp.com/about?hsLang=en) - [GET STARTED](https://oskorp.com/customers?hsLang=en) - [DISTRIBUTORS](https://oskorp.com/distributors?hsLang=en) - [RETAILERS](https://oskorp.com/retail?hsLang=en) - [CONTRACTORS](https://oskorp.com/contractors?hsLang=en) - [DIY](https://oskorp.com/diy?hsLang=en) - [HISTORY](https://oskorp.com/the-oskorp-history?hsLang=en) - [PARTNERS](https://oskorp.com/partners?hsLang=en) - [UNITEE](https://unitee.info/) - [HEAD-PRO](https://oskorp.com/head-pro?hsLang=en) - [HANNO](https://oskorp.com/hanno?hsLang=en) - [PRODUCTS](https://oskorp.com/products?hsLang=en) - [PRIVATE LABEL](https://oskorp.com/distributors?hsLang=en) - [PRODUCT OVERVIEW](https://oskorp.com/products?hsLang=en) - [ADHESIVE](https://oskorp.com/adhesive-tapes?hsLang=en) - [ONE4ALL](https://oskorp.com/one4all?hsLang=en) - [ONEBOND HYBRID](https://oskorp.com/onebond?hsLang=en) - ROOF (OUTSIDE) - [PLATINA PEEL & STICK](https://oskorp.com/platina?hsLang=en) - [GOLDWRAP](https://oskorp.com/goldwrap?hsLang=en) - [ONEBOND](https://oskorp.com/onebond?hsLang=en) - ROOF (INSIDE) - [VARISMART DUO](https://oskorp.com/varismart-duo?hsLang=en) - [VAPORFIX 2](https://oskorp.com/vaporfix-2?hsLang=en) - [WINDOW SEALING](https://oskorp.com/window-sealing?hsLang=en) - INTERIOR - [BATHSHIELD PRO](https://oskorp.com/bathshield?hsLang=en) - [LOFT-LINE](https://oskorp.com/loft-line?hsLang=en) - [CONSTRUCTION FILM](https://oskorp.com/construction-film?hsLang=en) - [HOUSE WRAP](https://oskorp.com/goldwrap?hsLang=en) - [GOLDWRAP](https://oskorp.com/goldwrap?hsLang=en) - [FIREWALL (A2)](https://oskorp.com/ember) - [TAPES (AGRICULTURE)](https://oskorp.com/es/farmers-tape?hsLang=en) - [FARMER'S TAPE](https://oskorp.com/es/farmers-tape?hsLang=en) - [BULL DUCT TAPE](https://oskorp.com/bull-tape?hsLang=en) - [SERVICE](https://oskorp.com/service?hsLang=en) - [WUFI](https://oskorp.com/wufi?hsLang=en) - [TRAININGS](https://oskorp.com/training?hsLang=en) - [MARKETING](https://oskorp.com/marketing-kit?hsLang=en) - [PARTNER PROGRAM](https://oskorp.com/partner-program?hsLang=en) - [CONVERSIONS](https://oskorp.com/conversions?hsLang=en) - [NEWS](https://oskorp.com/blog?hsLang=en) [CONTACT US](https://oskorp.com/contact?hsLang=en) OSKORP EMBERENVELOPE # Built to protect what matters most. Oskorp EmberEnvelope is a highly breathable and UV-resistant facade membrane of fire protection class A2-s1,d0 for permanent sealing of external facade areas behind open or closed facade claddings. Its non-combustibility makes it the perfect product solution for high-rise facades with increased fire protection requirements. [DOWNLOAD FLYER](https://oskorp.com/hubfs/Oskorp%20A-class%20WRB.pdf?hsLang=en) [TDS](https://oskorp.com/hubfs/TDB_Oskorp%20Facade%20Black%20A2_2025-04.pdf?hsLang=en) INTERESTED IN NUMBERS? ## Take a look at our technical Data   - #### Application - #### Usage Purpose - #### Technical data - #### Disclaimer Oskorp Facade Black A2 is applied directly from the roll in horizontal or vertical alignment on the facade. Use double-sided adhesive tape strips or mechanical fixings as staples to attach Oskorp Facade Black A2 to the substrate. Membrane joints and overlaps must be carried out with an overlap of at least 10cm. They can be sealed by using the suitable adhesive tape OskorpT Facade tape A2. Use the façade substructure or counter battens to secure ME017 to the facade from the outside in the long term. Oskorp Facade Black A2 is especially suitable as breathable facade membrane for buildings with increased fire protection requirements. In combination with the Oskorp Facade tape A2, it is used as an external breather membrane to cover entire façade areas which require a good weather resistance and the reaction to fire classification class A2-s1,d0 according to EN13501-1. ![image-png-3](https://oskorp.com/hs-fs/hubfs/image-png-3.png?width=1266&height=520&name=image-png-3.png)   *The technical data has been compiled on the basis of the latest state of the art; however, due to the variety of substrates and object conditions, the user is not released from his obligation to test the material for its suitability for the intended use under the respective object conditions in a professional and workmanlike manner.* FAQ ## Need clarification? ### What makes Oskorp EmberEnvelope different from standard WRBs? Oskorp EmberEnvelope is classified as **A2-s1,d0** under EN 13501-1 — meaning it’s **non-combustible** with **no flaming droplets or smoke development**. Most standard WRBs are B-Class or lower and cannot match its fire performance, especially for high-rise or code-regulated projects. ### Can Oskorp EmberEnvelope be used behind open-joint façades? Yes. Thanks to its **black UV-resistant surface** and 9-month open exposure rating, Oskorp Firewall is an excellent choice for ventilated rainscreens and open cladding systems. ### Is the membrane breathable? Yes. EmberEnvelope is **highly breathable** and **vapor-open**, allowing moisture to escape from the wall assembly while still being watertight (W1 rating) and windproof. ### Where is Oskorp EmberEnvelope required? EmberEnvelope is ideal for: - **High-rise buildings** - **Schools, hospitals, airports** - **Mixed-use and commercial façades** - **Any project** where **non-combustibility** or **fire regulations** require A2-rated materials. ### Is it easy to install? Absolutely. EmberEnvelope is flexible and durable with **high tensile strength**, making it robust on site. For best performance, we recommend pairing it with our **EmberSeal** Tape. [![Oskorp-Logo-White-web](https://oskorp.com/hubfs/Oskorp-Logo-White-web.png)](https://oskorp.com?hsLang=en) Oskorp Inc.  3838 Tamiami Trail N #416 Naples, FL 34103, USA ### Resources - [News](https://oskorp.com/blog?hsLang=en) - [Privacy Policy](https://oskorp.com/privacy-policy?hsLang=en) - [Terms & Conditions](https://oskorp.com/terms-and-conditions?hsLang=en) - [Limited Warranty](https://oskorp.com/warranty?hsLang=en) - [Contact](https://oskorp.com/contact?hsLang=en) © 2024 Oskorp Inc. All rights reserved [Privacy Policy](https://oskorp.com/privacy-policy?hsLang=en) [Powered by Atlas - a B2B SaaS HubSpot theme](https://www.kalungi.com/atlas-hubspot-theme-for-b2b-saas-software)