Our swimming pool enclosures feature an anodizing process which provides a finish that is virtually impossible to scratch and lasts longer than the 20 year warranty. From our many years of experience, we know that after 4-5 years of weathering and chemical wear from the pool water, the powder coating finishing starts to peel and crack. There will not be any problems with the anodized finish we use on our swimming pool enclosures. We utilize all stainless steel fasteners and aircraft quality extruded aluminum on the DynaDome pool enclosures.