A 24 12 slate 600mmx300mm demands only 13 continue reading.
Roofing slates per square metre.
Here is an example of how the roofing measurement process works on a basic duo pitched roof.
This calculator will estimate the following number of slates required per square metre.
Slate roofs national slate association 1926.
One advantage of going for a british or spanish product is that it will meet european standards bs en.
A man with crawling boards moving over your roof can create even more damage through no fault of his own.
If you only have a very few missing or cracked tile or slates with no apparent ingress it may be best to leave well alone.
For example if you re using a 20 10 slate 500mmx250mm you will require 21 slate per m2.
Slate roofs national slate association 1926.
Slate roofing 3 16 inch slates.
Decent quality examples come in at around 25 30 per m2 which is keen enough to compete with plain clay tiles.
The amount of slates you need per square metre m2 depends on which slate size you re using.
The values shown in the slate coverage chart above are calculated using nominal sizes and incorporate a 5mm jointing gap.
The advantage is that just like interlocking tiles far less per metre are needed.
The exact material you use will have an impact on the cost of the roof with basic felt solutions costing around 50 per square metre for the material itself and more high end materials such as modern grp a form of fibreglass going up to 90 per square metre but allowing unlimited options in terms of colour and generally being more long lasting.
Slate roofing 3 8 inch slates.
Holing gauge for holing slates.
Roof span 2 x roof pitch constant for rafter rafter length.
Tile batten gauge for slate.
To calculate the weight per square metre simply multiply the weight per slate given below by the number of slates per square metre for the same slate listed above.
Slate roofing 1 4 inch slates.
600 300 24 12 13 slate per m2 500 250 20 10 21 slate per m2 450 250 18 10 23 slate per m2 400 250 16 10 27 slate per m2 we ve built a simple tool to calculate the amount of slate you need for your roof.
Flat roof replacement costs.
Slate roofs national slate association 1926.
The number of roof slates that are needed depends on the slate size and the lap in mm.
We recommend the addition of at least 5 wastage.
This table shows the required number of slates per square metre for effective coverage.
If the roof pitch is 35 the roof span is 6 5m wide and the roof length is 12 6m using the reference guide graphic above the calculation for the slope would look like this.
Across a full roof with a tiled area of 170m2 this could equate to a saving of 1 700 or more compared to home grown slate.
Simply select the size of slate you need and enter the size of your roof in m2 into the box.
