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Q: We live in the Florida, and had the original windows replaced with aluminum frame windows. After only about a year, the paint is starting to get bubbles in it and peel or flake off. What is causing the paint to fail? Do know of anyone who can perform inspections on our windows? A: The surface may appear to have an adequate amount of coating applied, however most often the cut joints in the construction phase are not addressed, and these edges are exposed to the elements and then begin to corrode. I suspect upon closer inspecting the joints under magnification you will see an insufficient or total lack of paint on these edges. In a typical aluminum manufacturing process the aluminum is extruded out into long sections, chemically cleaned to remove any surface contaminates such as dirt, oxidation, or processing lubricants. The surface is then coated with a chemical pre-treatment coating to resist corrosion. Then it is painted with a suitable liquid paint or powder coating. After the painting process, these long sections of aluminum are then cut to the desired length and fabricated into frames. It is here that we see most failures occur. Once the material is cut, the new edge becomes exposed and is unprotected. Corrosion will creep up under the paint and cause the surface underneath to corrode causing the paint film to bubble and peel. We are available to travel to your location, perform several inspection tests and confirm the application of the coating complies to the window manufacturer’s specifications. Please contact us for any additional information.
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© 2008 - Ron Joseph, Paint Consultant in Saratoga, California |
