What is Slate?
American Stone LLC - FAQsSlate is a fine-grained metamorphic rock that splits into thin, smooth-surfaced layers. Slate can be used on floors, fireplaces and countertops.
Related QuestionsBENNETT STONE & TILE COMPANYSlate is a fine-grained, metamorphic rock, commonly derived from sedimentary rock shale. It is composed mostly of micas, chlorite and quartz. It is best used for floors, walkways and roofing and recently has been used attractively for kitchen countertops and wet bars. It is a dense composite that is very tough and typically comes in blacks, grays and greens, however other beautiful colors can also be found in slate products. Slate colors within the same color family often vary.Related Questions
NTM: FAQsSlate is a fine-grained, clayey metamorphic rock that cleaves, or splits, readily into thin slabs having great tensile strength and durability; some other rocks that occur in thin beds are improperly called slate because they can be used for roofing and similar purposes. True slates do not, as a rule, split along the bedding plane but along planes of cleavage.Related Questions
Slate Flooring Tile FAQsSlate is a fine-grained metamorphic rock. Itâ??s main constituents are quartz, chlorite, mica & calcite. Slate is formed when ocean or riverbed sediments are compressed and heated by the earth's crust.Related Questions
Untitled DocumentSlate is a fine grained rock formed from layers of shale and clay deposits. Those layers can be detected in the delicate tracery of its texture and in its enchanting palette of colours. Far more than several shades of grey, slate often has hints of green, russet, hazel and plum, giving it enormous potential for fascinating floors.Related Questions
What is a ribbon slate?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...Ribbon slates are Pennsylvania black slates that have small bands running through them. These ribbons contain a high amount of carbon that deteriorates much faster than the rest of the slate. This results in the slate becoming separated at the ribbon, allowing either the slates to fall out or water to penetrate the roof. Even so, ribbon slate roofs have still been known to last 50 to even 100 years if the roof is steep and well shaded.
Related QuestionsIs there a grading system for slate?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...It is very simple. S-1 means the slate will last more than 75 years. S-2 slate is meant to last 45 to 75 years and S-3 slates are meant to last 45 years or less. However, slates of all three grades generally do last longer than their required minimums.
Related QuestionsIs slate a tripping hazard?
Frequently Asked QuestionsIn our opinion, no. We have sold lots of slate, and have never had any complaints that people were tripping on the cleft areas of properly installed slate. We have had some specifiers concerned about it, and have decided not to use slate, but those who went with it, were always happy, to our knowledge. One consideration is that there are usually some pieces within a slate shipment that the tile contractor should sort and not install.
Related QuestionsWhere does slate come from?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...Slate is mined all over the world, from the U.S. to Brazil to China to India and throughout Europe as well as many places in Africa. Even Australia has recently started to quarry slate. Most of these areas potentially have good quality slate. The trick is getting it produced. The question is whether or not the operators know how to quarry and finish the slate to high quality roofing slate.
Related QuestionsHow much does slate weigh?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...Standard thickness slate weighs approximately 800 to 1,000 pounds per square installed. (A square is a 10 foot by 10 foot area.) 3/8" slate weighs approximately 1,500 pounds per square. Every 1/8" of additional thickness increases the weight by approximately 500 pounds per square.
Related QuestionsWhat is the lowest pitch that slate should go on?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...We prefer not to put slate roofs on pitches less than 6/12. We will consider putting on slate roofs that are 4/12 and 5/12 if we double felt (30#) and run a 4" headlap on the slate.
Related QuestionsIs a slate roof fireproof?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...Slate itself is fireproof. A slate roof is one of the most fire resistant roofs that exist. However, the wood deck under the slate is not fireproof. Often fires will jump from house to house as sparks hit adjacent roofs, igniting the surface if it is a flammable material. Many of the raging fires that engulf hundreds of houses every year would not occur if the houses were covered in slate.
Related QuestionsIs DaVinci Synthetic Slate or Shake made from recycled materials?
DaVinci Roofscapes...Frequently Asked QuestionsNo. While other synthetic shingles are manufactured from recycled materials such as tires or milk bottles, it is our opinion that roofing materials are not a good use for recycled goods. Roofing shingles are exposed to extremely harsh conditions (extreme weather, extreme UV, extreme temperature). The only way to assure that a synthetic slate or shake will provide good service for 50 years or more is to produce those shingles to very exacting standards.
Related QuestionsNTM: FAQsSlate is a durable, water and stain resistant material. It has a non-skid surface that makes it ideal for interior and exterior flooring, paving and stair treads. It can also be used as wall cladding, tabletops and bathroom vanities. Almost all slate comes in small slabs and may not be the best choice for kitchen countertops where the appearance of seams are an issue.Related Questions
How do I care for my slate?
NTM: FAQsLike most stones, slate should be sealed to protect it against stains and water. A silicon based stone sealer can be used yearly where stains are a concern. A mild detergent and water is all that is needed for general cleaning. The surface separating layers of sedimentary rock. Marks the termination of one deposit and the beginning of another of different character. Rock tends to separate or break readily along bedding planes.
Related QuestionsHow thick is roofing slate?
FaqStandard thickness roofing slate is 1/4" nominal thickness. Slate is still split by hand, most often with hammer and chisel , sometimes with pneumatic chisel. The experienced eye of the splitter is the primary thickness gauge, and thus that 1/4" thickness will usually vary by at least 1/16" in either direction.
Related QuestionsWhat's with all these slate colors?
FaqSlate comes in many colors, and many variations of those colors. Black, gray, dark gray. Green, purple, red and rusty.
Related QuestionsHow much of the slate shows?
FaqThe portion of the slate that you can see, (not buried under succeeding courses) is referred to as "exposure". Exposure is dependent on the headlap and calculated by: (length minus headlap/ 2). For example, an 18" tall slate will have an exposure of 7-1/2". (18" minus 3") divided by 2 = 7-1/2".
Related QuestionsWhat are slate hooks?
FaqSlate hooks are used for repairs. if you're uncertain about proper repair procedures. Another repair method, still favored by many craftsmen, is to fashion a "bib" from copper.
Related QuestionsHow many slate colors are there and what are they?
The New England Slate Co - Slate Roofing FAQ'sGrey (Gray), Green, Purple, Black and Red. These colors are found in a variety of hues amongst a number of quarries. They can and will vary widely between quarries and geographical location. Some will change color and some will not.
Related QuestionsWill Hallett Gutter Cover® work on cedar or tile (slate) roofs?
Hallet Gutter Cover® - Frequently Asked Questions (FAQ)Yes, but extreme care and caution should be taken when installing and installations may be limited to new roofs only, as these types of roofs may break when lifted to install the gutter cover.
Related QuestionsWhat colors does slate come in?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...Gray, green, purple, black, and red. Sometimes there is a mottling effect, mixing a couple of these colors together, the most common being gray-black, gray-green, and green-purple.
Related QuestionsWhen will the first slate of research projects be announced?
EBI: Frequently asked questionsIt is anticipated that the new EBI programs and projects will be announced by the end of November 2007.
Related QuestionsIs there special framing or structure needed for slate?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...A good solid deck with 16" on center framing is preferred. Most structures are built to handle wind and snow loads that far exceed the weight of slate. However, a weak structure that has too much flex to it will result in a poorly installed slate roof. Ideally, one would use a ¾" thick tongue and groove deck on 2" x 12" rafters 16" on center. However, this is an expensive deck, and would be a rare sight today.
Related QuestionsCan a slate roof that has been covered over by asphalt shingles be salvaged?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...No. When asphalt shingles are applied over slate, the nails are driven through the slates. This method leaves holes in the slate if the nails and shingles are removed. New slate must be applied to ensure a watertight roof. Yes. Even new slate roofs will shed a few slates. It is a good idea to visually inspect a slate roof at least once a year. The owner of the property can do this annual inspection. Any slates that are seen to be missing, sliding, or broken should be replaced.
Related QuestionsAre slates available for repairing old slate roofs?
Frequently Asked Questions about Slate, Tile, Metal Roofing ...Yes. Many contractors have inventories of reclaimed slate with which to repair old slate roofs. Old slate roofs often have weathered to a different color than new slate of the same type. Also, many old slates are thinner than the new slates that are being quarried today. That is why reclaimed slates are often the best choice for repairing an existing slate roof.
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