Structural Slate Co. (The)
222 E. Main St.
Pen Argyl, PA 18072-1616
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| Toll Free: | 800-677-5283
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| Phone: | 610-863-4141
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| Fax: | 610-863-7016 |
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Overview:
Founded in 1918, The Structural Slate Company promotes the use and sale of PA Natural Slate products. Standard products consist of flooring, roofing, fireplace facings, mantels & hearths, as well as Architectural products, such as copings, facing panels, window sills, treads & risers, counter tops & vanities, etc. All products are "custom manufactured" to specification and quotations are free of charge. A drafting department is available to assist anyone from Architect to Homeowner with design and recommendations.
Our Definition of Slate
Being a durable, time-tested stone, Slate may be the answer to some of your design problems. Resistance to acid and water penetration make Slate desirable for many applications.
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Chemical Composition and other physical properties of slate.
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Because Pennsylvania Natural Slate is a very durable material, a finish is not necessary to protect the material. However, due to aesthetic considerations, a particular sealer, impregnator, oil, etc. may be required.
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Slate Flooring (Interior) - Slate flooring is normally installed over a concrete slab, wood sub-floor or existing flooring.
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Documentation and Installation Diagrams available.
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Window sills usually refer to exterior, rather than interior slate installations. For exterior applications, Clear grade slate should be used. Slate for exterior use should conform to A.S.T.M. C-629 for Class I slate.
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Slate Paving & Flagging (Exterior) - Slate paving / flagging is normally installed over a concrete slab of 4" thickness.
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Anchors & Fasteners - generally refer to mechanical installation techniques for slate panels on vertical installations. Stainless steel is recommended for exterior installations. A minimum of four (4) anchors per stone up to twelve (12) square feet in area is recommended, with two (2) additional anchors for every additional eight (8) square feet in area. Weight, wind load, shear factors, etc. should be considered to determine the size and number of mechanical anchors.
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Window stools usually refer to interior, rather than exterior slate installations. For interior applications, Clear grade or Ribbon grade slate may be used. Slate for interior use should conform to A.S.T.M. C-629 for Class II slate.
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Because "Natural Slate" is practically immune to all common chemicals, it is probably the least exacting of floors in the matter of maintenance. Any of the usual cleaners may be used on slate with safety, though strong alkaline solutions or acids may affect the grout joint. Being dense and practically non-porous, slate is not affected by strong detergents or ammonia.
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Copings and wall caps are usually an exterior application. However, interior wall caps and planters are not an unusual application for slate. Slate for exterior use should conform to A.S.T.M. C-629 for Class I slate and interior applications are Class I or Class II.
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Panel and/or Facia applications are usually exterior slate installations. For exterior applications, Clear grade slate should be used. Slate for exterior use should conform to A.S.T.M. C-629 for Class I slate. Interior panel applications should conform to A.S.T.M. C- 629 Class I or II.
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Treads and risers are supplied in 3/4", 1", 1 1/4", 1 1/2" & 2" Thicknesses. Other thicknesses are available to comply with special field requirements.
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Slate for Counter Tops, Lavatory Tops and Vanities is usually an interior application. Slate for exterior use should conform to A.S.T.M. C-629 for Class I. Interior applications can be Class I or II, however, Ribbon Grade should not be used for chemistry labs.
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Last Update: 2007-10-09
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