Roof Slates Per M2 Calculator

We ve built a simple tool to calculate the amount of slate you need for your roof.

Roof slates per m2 calculator.

This table shows the required number of slates per square metre for effective coverage. Per square smaller roofing slates actually weigh more than larger slates and come in at around 800lbs square while larger slates 12 24 weigh about 700lbs square. The most popular slate size in southern england is 500 x 250mm and 400 x 250mm in the north of england and scotland. The amount of slates you need per square metre m2 depends on which slate size you re using.

Our slate calculator will do the rest remember when checking out to add 10 more onto the total in order to cover wastage. Simply multiply the length of your roof deck by the width and you ve got the square meterage. Slate half slates. One advantage of going for a british or spanish product is that it will meet european standards bs en.

The values shown in the slate coverage chart above are calculated using nominal sizes and incorporate a 5mm jointing gap. Total linear run of tile batten in metres. A 24 12 slate 600mmx300mm demands only 13 slate per m2. Slate sizes can start as small as 6 12 inches and be as large as 16 24.

This calculator will estimate the following number of slates required per square metre. How many roof tiles do i need. 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. Decent quality examples come in at around 25 30 per m2 which is keen enough to compete with plain clay tiles.

For example if you re using a 20 10 slate 500mmx250mm you will require 21 slate per m2. The following tools estimate the area of a roof as well as the amount of materials necessary to construct a roof of a given area. Once you know the square meterage of your roof the next stage is to calculate how many tiles you need. 3 97 x 12 6 x 2 100 04m total roof area when you know this you can work out all the materials needed to complete your project.

If your roof is rectangular or square getting this measurement should be easy. This would mean your roof deck was 24 square metres. Simply select the size of slate you need and enter the size of your roof in m2 into the box. The house base area is the area of land that the house covers and for more complex shapes can be estimated using the area calculator.

On average slate measured at approximately 1 4 inch thick weighs between 700 and 800 pounds per square. Please enter the dimensions in the white fields below and click calculate to show the results. From your chosen size of slate and headlap calculated using our headlap tables use this coverage table to calculate how many slates per m2your roof will require. The number of roof slates that are needed depends on the slate size and the lap in mm.