roofing slate


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roofing slate

[′rüf·iŋ ‚slāt]
(materials)
Hard varieties of slate varying in size from 12 × 6 inches (30 × 15 centimeters) to 24 × 14 inches (60 × 35 centimeters), and from ⅛ to ¾ inch (3 to 19 millimeters) in thickness.

slate

A hard, brittle metamorphic rock consisting mainly of clay minerals, characterized by good cleavage along parallel planes; used extensively as dimension stone in thin sheets for flooring, roofing, panels (both decorative and electrical), and chalkboard, and in granular form as surfacing on composition roofing.
References in periodicals archive ?
Its high quality also means we are able to make very large roofing slates that other manufacturers have difficulty making.
Managing director Alan Smith said that the rise in exports had been driven by the company's roofing slate products, which are regarded as the highest quality available.
As much as half the roofing slate is sold to heritage replacement markets in the UK, Australia and New Zealand.
A premium product from the two quarries is roofing slate, but aggregates for the UK construction industry is also important to the business.
The company employs 270 producing roofing slate at Penrhyn, plus a further 180 at its Cwt y Bugail and Gloddfa quarries at Blaenau Ffestiniog.
Chris Law,managing director of Welsh Slate (left),formally hands over the roofing slate the company has donated to the Toe Gobaith yng Nghymru hospice to trustee Dafydd Wigley Picture: STACEY ROBERTS
n Elidir is formed of ancient Cambrian rocks -once the sands and shales of a seabed but later the source of roofing slate.
Woodburning stove "It is a focal point of the living room, sitting on a hearth made from reclaimed roofing slates, with a log basket off to one side and an old railway lamp off to the other.
All roofing slates quarried in Vermont carry the highest rating available, which is an S1 grade.
All roofing slates, structural timber and floor boards are also saved for future use.
As for roofing slates, they shut down quarries in Scotland and Wales and we now import most of them from Spain.