All slates require a good standard to skill and experience on the part of the slater. Probably the most important components of this is taking care to cope under the dimensional variants from slate to slate. In order to attain it convenient and therefore to ensure the slating price is reasonable; limits are set on the variations in length; width; edge straightness; rectangularity; flatness and thickness; and there are tests per of the. These limits do not apply inside random sized slates as their dimensions are undefined.

expertise and understanding of the roofer

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