--- title: Coating Removal and Substrate Preparation on Historic Window Frames and Casings description: To restore windows and prepare old casings for new paint, several methods may be considered including abrasive blasting, chemical paint strippers, or hand tools image: https://blog.spongejet.com/hubfs/window_blog_header.jpg --- - [+1 603-610-7950](tel:+1-603-610-7950) - [Home](https://www.spongejet.com/) - [Log In](https://www.spongejet.com/login) - [Contact](https://www.spongejet.com/contact/) English Espanol Japanese Korean Chinese Deutsch Netherlands Search - Products - Resources - Web Pages Find the best products for your job [![spongejet](https://blog.spongejet.com/hs-fs/hubfs/Spongejet-Oct2015-Theme/Images/logo.png?width=211&height=49&name=logo.png "spongejet")](https://www.spongejet.com/) - [Home](https://www.spongejet.com/) - [How It Works](https://www.spongejet.com/how-it-works/) - [Videos](https://www.spongejet.com/video-gallery/) - [Why Sponge-Jet?](https://www.spongejet.com/why-sponge-jet/) - 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Windows in these buildings can be very heavy and fragile, with glass components highly susceptible to chipping or fracturing. Window damage is avoided at all costs, as the glass is very costly to replace and reinstall. To restore windows and prepare old casings for new paint, several methods may be considered including the use of chemical paint strippers or hand tools (e.g. wire wheels or bristle blasters). For larger projects, ordinary abrasive blasting can be a solution, but normally all glass must be removed prior to blasting to prevent damage from the media. Sponge blasting is another alternative. With minor precautions, removal of glass components is usually unnecessary.  [**This video**](https://youtu.be/dQbZ4hLlq8Q) shows a blaster quickly and efficiently sponge blast an aluminum window frame up to the glass edge with no protection of the glass. While [Sponge Media](https://www.spongejet.com/store/sponge-media/) allows for blasting directly next to the glass, minor precautions are recommended to prevent accidental damage of the glass. This is possible due to the unique characteristics of Sponge Media micro-abrasive, which drastically reduces rebound and ricochet after collision with the substrate. A blaster can blast with surgical precision due to the increased visibility that Sponge Media’s [dustless blasting](https://blog.spongejet.com/dustless-blasting-low-dust-blasting-and-sponge-media) environment creates, even in small containment areas. - [Tweet](https://twitter.com/share) [Historic Restoration](https://blog.spongejet.com/topic/historic-restoration) [Tech-Terminal](https://blog.spongejet.com/topic/tech_terminal) Search this site on Google Search Google ### Categories - [Case Histories (41)](https://blog.spongejet.com/topic/case-histories) - [Historic Restoration (35)](https://blog.spongejet.com/topic/historic-restoration) - [Tech-Terminal (35)](https://blog.spongejet.com/topic/tech_terminal) - [Executive View (23)](https://blog.spongejet.com/topic/executive-view) - [Lead Abatement (22)](https://blog.spongejet.com/topic/lead-abatement) - [Application Station (21)](https://blog.spongejet.com/topic/application-station) - [Cleaning (18)](https://blog.spongejet.com/topic/cleaning) - [OSHA (12)](https://blog.spongejet.com/topic/osha) - [Safety First (12)](https://blog.spongejet.com/topic/safety-first) - [corrosion (12)](https://blog.spongejet.com/topic/corrosion) - [Stone Restoration (10)](https://blog.spongejet.com/topic/stone-restoration) - [Dustless Blasting (8)](https://blog.spongejet.com/topic/dustless-blasting) - [Fire Damage (7)](https://blog.spongejet.com/topic/fire-damage) - [Marine Industry (7)](https://blog.spongejet.com/topic/marine-industry) - [Robotica (7)](https://blog.spongejet.com/topic/robotica) - [Granite (5)](https://blog.spongejet.com/topic/granite) - [Coal Slag (4)](https://blog.spongejet.com/topic/coal-slag) - [Robotic Abrasive Blasting (2)](https://blog.spongejet.com/topic/robotic-abrasive-blasting) - [Railcar (1)](https://blog.spongejet.com/topic/railcar) see all ### Recent Posts ### Sign up for our blog. ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/find-rep-bg.png) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/find-rep-img.png) [Distributor Locator](https://www.spongejet.com/find-rep/) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/white-paper-bg.png) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/white-paper-img.png) [Resources](https://www.spongejet.com/support/resources-support/resource-library/?k=&type=document-library&document-type%5B%5D=24&searchsubmit=Search+resource) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/online-traing-bg.png) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/online-traing-img.png) [Online Training](https://www.mytestcom.net/app/myTestcomURL.cfm?accountLogin=SpongeJet123&joinPasscode=SpongeJet123) [![spongejet](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/logo.png)](https://www.spongejet.com/) - - - - - [+1 603-610-7950](tel:+1-603-610-7950) - [Contact us](https://www.spongejet.com/contact/) Phone: +1 603-610-7950 | 14 Patterson Lane, Newington, NH 03801 USA - [© 2015 Sponge-Jet, Inc.](https://www.spongejet.com/copyright-info/) - [Contact](https://www.spongejet.com/contact/) - [Support](https://www.spongejet.com/support/) - [Privacy Policy](https://www.spongejet.com/privacy-policy/) - [Terms & Conditions](https://www.spongejet.com/terms-conditions/)