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    3. Roof Penetration Flashing This type is crucial around vents, chimneys, and skylights. Proper installation of penetration flashing is vital to prevent leaks around these vulnerable areas.


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    1. Surface Preparation The success of soldering hinges on proper surface preparation. Before soldering, it is essential to remove any oils, dirt, or oxidation from the surface. For galvanized iron, this often means using a wire brush or sandpaper to clean the area. It's also critical to remove the zinc coating at the joints to promote better adhesion.


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