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| Do slates change color with age (1/2/2011) |
| Yes. Weathering or semi-weathering green and gray slates can develop brownish and pinkish tints, due to iron in the slate. At the time of new installation, the percentage that will turn color is unpredictable. It can be as little as 5 to 10 percent or nearly 100%. The only way to predict for certain what a roof will look like (if one wishes to have a weathering slate) is to install a reclaimed slate which has already undergone the weathering process. Unfading slates also change colors to some degree. Some can turn a deeper shade and some can become slightly washed out looking. Weathering slates will change colors almost immediately after installation and may continue to change for years, while unfading slates change colors more gradually and subtly. |
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