Unless it s made of a material with famed longevity like slate a roof depreciates with each year.
Roof slate coverage.
Repair coverage usually takes into consideration depreciation of the roof.
Natural slate coverage how many slates per m 2 back to knowledge base.
It could be as low as 15 for a roof near the end of its service life.
The most popular slate size in southern england is 500 x 250mm and 400 x 250mm in the north of england and scotland.
By taking advantage of the various sizes and types of slatescape roofing slate considerable cost savings can be made.
Slate coverage cost.
Divide the above total by 100 which will give the number of squares of roofing required.
This means you will get a percentage of the replacement cost based on the roof s material and age.
Roof pitch lap.
Allow from 2 to 15 additional slate depending upon the extent to which the roof is intersected by other roofs dormers walls other contingencies etc.
Read your policy carefully.
The shallower the roof pitch the smaller the area of the roof slopes.
The actual cost of a roof per unit floor area of the building is determined by a number of factors including roof pitch slate size and head lap.
Still roofs that perform better will generally cost less to insure because you re less likely to have a claim.
Many insurers won t cover those that are over a quarter century old.