Welsh slate sizes

Traditional sizes that are not listed above and random diminising slates can be . Slates are then dressed to their final size with traditional chamfered edges, graded for thickness and packed for despatch. The Slate Industry of North and Mid Wales Traditional names and sizes of Slates. This system of naming slate sizes after female nobility was devised by . Slate sizes range from length by width (Small Doubles) and by ( Narrow Ladies) up to by (Duchesses) and by (Princesses). The values shown in the Slate Coverage chart above are calculated using nominal sizes and incorporate a 5mm jointing gap.

All slates are sorted by hand and graded according to size , thickness . Bangor Blue slates come in standard sizes of 500x300mm (x 12”)- note other sizes are available . Most commonly used for external and internal cladding requirements. Size Imperial Inches, Cost per Slate : ££, Slates needed per m² at mm head lap. The most commonly used slate size in Britain is 5x 250mm. Large quantities of all sizes available.

Every slate is sorted and hand graded. Slate is a fine-graine foliate homogeneous metamorphic rock derived from an original. Occasionally, as in the purple slates of North Wales , ferrous reduction. In areas where slate is plentiful it is also used in pieces of various sizes for . Although slate replacement roofs are expensive, the superiority of materials and.

The slates were graduated according to thickness, size , and exposure, the. Today, slate is only quarried in Vermont, Pennsylvania,. Standard sizes for roofing slates in the U. In the old days quarries produced all sizes of rectangular slates. Welsh Slate - James Herdman Roofing.

Made in Wales from over recycled slate , this tops the range in both performance and looks with a proven track record on. See all available colours and sizes in this range . Aberllefenni welsh slate is still available in small sizes to make nameplates and plaques. Whether you are constructing a new roof or maintaining and repairing, we have a selection of Roof Tiles and Slate in a variety of different colours and styles. Able to be cut into an array of different sizes , slate is also a premium material . A History of Slate with a particular emphasis on the Quarrying and Mining of Slate in North Wales.

Our slate is a flat angular product that comes in blue, green, plum grey and is available in both 40mm 20mm sizes. This is a question we get asked all the time. In order to calculate the amount of roof slate you will require, an accurate measurement . Slate sizes , widths, lengths, colors, shapes, and thicknesses can all vary, but the headlap is a constant that must be maintained.