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    2. Adhesion Properties The roughness of galvanized iron can significantly influence the adhesion of coatings and paints. A rougher surface might provide better mechanical bonding for additional coatings, while a smoother surface may require different types of preparations for optimal adhesion. Suppliers must be familiar with these properties to advise their clients effectively.


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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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