My experience of random width slating in diminishing courses graduated slating in american terms differs from that of american slaters.
Random width slate roof.
For example ssq riverstone random roofing slate can cover between 22m and 24m per tonne using an overlap of 75mm to 100mm.
Above is a random width slate roof pa black slates.
In a random width roof also known as a variable slate roof the widths of the slate will vary in size.
Although possible for a uniform size slate roof multicolored slate roofs are most commonly achieved using a random width installation.
Slate tiles were provided in a variety of lengths and widths for this project 20 x random width 18 x random width 16 x random width and 14 x random width.
An excellent explanation of random width natural vermont roofing slates in the following quote from the slate book by brian stearns alan stearns and john meyer.
The characteristics of random slating are.
Slate lengths which reduce up the roof slope.
The textural effect is created by periodically inserting two slates on top of each other where one slate would normally be.
A diminishing course effect roofing slates of the same width but in courses of progressively shorter length is achieved by ordering slates of random width and in the various lengths required.
Evenly diminishing margins.
Random width slating in diminishing courses uk style.
Slate tiles are set in courses where the roofer periodically inserts two slates on top of each other to.
A random width slate roof offers more texture and less uniformity than a standard slate roof.
This variable slate pattern creates added architectural detail to the traditionally installed slate roof.
The architectural grade slate which ranged in thickness from 3 8 to 1 2.
Forever green roofing installed a blend of 70 unfading and 30 semi weathering green from north country slate this slate roof will definitely stand out.
The margin of a slate is the height of the exposed part.
Multicolored blended slate roofs where a variety of colors is available it is common practice to blend mixtures of various colors together to create a multicolored slate roof.
Even though the two styles share some of the same attributes random width slate roofs are cut to one length and thickness in a variety of widths.
The consignment of slates is sorted into length sets by the slater and laid from the largest at the eaves to the smallest at the ridge.
A variety of widths will generally be provided by the quarry.