The color of slate also varies by location, and is determined by its chemical and mineral makeup. Slates considered “unfading” experience only minor changes in color over time as they are exposed to the elements. Slates classified as “semi weathering” or “weathering” show a noticeable color change, often resulting in striations in the slates that give each roof it’s own unique appearance. Slate roofs weigh considerably more than shingle or metal roofs, so this must be taken into consideration when building a new structure or re-roofing an existing structure.
Many slate roofs are composed of slates of the same color, standard thickness (¼” to 3/8”), and of the same length and width. However, thicker slates can be used over the entire roof, or mixed with slates of standard thickness, lengths and widths to achieve an uneven “Old World” look. Different color slates can also be used together to create a unique appearance.
In terms of initial cost, slate is one of the most expensive roofing options. However it is much more economical when one considers that a properly installed and maintained slate roof can last for generations. PSR is able to assist the owner, architect and builder in planning for and choosing the slate that will best fit the desired style and look.
In addition to its visual appeal, natural slate is also one of the most durable of all roofing materials. Slates are available in a variety of colors and sizes, giving the consumer many looks from which to choose. Roofing slate is quarried in large blocks, then split by hand into individual pieces of consistent thickness. Slate is available from quarries all over the world, yielding slate with varying characteristics. One of the most important characteristics is the density of the slate. A softer slate will crack more easily during shipping, installation, and when exposed to the elements, making for a roof that is not as sound. Another factor to consider is whether or not there are undesirable mineral deposits in the slate that will mar the look, and possibly compromise the integrity of the roof.
Palmetto State Roofing, Inc. can also identify and locate replacement slate for the repair of your existing roof. In South Carolina, Palmetto State Roofing, Inc. is the slate roof specialist.