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Freedom Gray Copper is a proprietary finish with a special alloy. It is standard architectural copper
produced in accordance with ASTM B370 that has been coated both sides with a proprietary tin/zinc alloy. Although the coating contributes to the products excellent corrosion resistance, it is applied for aesthetic purposes only. The finish provides a soft earth tone gray color that you will notice with Freedom Gray Copper. The tin/zinc-coated areas will prevent the substrate copper from oxidizing and producing green patina stains normally associated with uncoated copper. However, like other gray metals Freedom Gray Copper can produce a gray or black stain on light colored masonry and unpainted cedar shingles.
When Freedom Gray Copper is first installed there may be aesthetic differences between adjacent panels or pieces. Some may appear darker than others and/or there may be non-uniform patterns, textures or lines. This can cause concern regarding the quality of the product and long-term appearance of the structure. Following is an explanation of why such differences may occur and their long-term effect.
the surface is covered and some not. The uncovered (or exposed) tin/zinc alloy begins to weather and darken immediately upon exposure. With Freedom Gray Copper the covered areas undergo little or no color transformation until the paint is removed by the weathering exposure. It is important to understand that the paint is a transitional coating and is not permanent. As the tin/zinc alloy is exposed any initial differences fade and disappear.
Freedom Gray Copper is a natural material that develops natural patina. Just as with plain and prepatinated copper there will always be differences in shades and hues. As with Freedom Gray Gutter these are not an indication of defective material and they are not a reason to reject the material. In many respects it is the variations that give Freedom Gray Copper its unique life, vitality and aesthetics. Aesthetics that cannot be achieved with painted steel or similar metals. In Freedom Gray Copper Gutter the Z-T alloy is applied to the copper substrate on both sides with a coating thickness of approximately 0.5 mils. The alloy is a composition of approximately 50% tin and 50% zinc.
Copper Gutter do not store in a manner or location so that water or moisture may remain between sheets or shapes prior to installation. Do not store on bare ground under a tarp or in other manner that may cause condensation to form on or between sheets or shapes. In the absence of oxygen, standing water may cause water stains. With Freedom Gray Copper watch for water stains and scratches should not affect the life or durability of Freedom Gray Copper; however they can be aesthetically unattractive. Handle carefully in a safe manner to avoid and reduce scratching, dents and damage.
