Roof tile sizes how many roof tiles per square metre

Close up view of the roof showing valley ridge with Acme Single Camber used

Roof tile sizes: how many roof tiles are needed per square metre?

The number of roof tiles needed per square metre varies and can range from less than 10 to more than 60. Standard plain roof tiles typically measure 265x165mm. With a minimum headlap of 65mm and a maximum batten gauge of 100mm, these tiles will give a covering capacity of 60 tiles per metre squared. 

Roof tiles, however, come in a vast range of shapes and sizes, and roof structures can also vary greatly. Factors such as the size of your selected roof tile, whether the tiles are interlocking, roof pitch, required headlap and batten gauge can all affect the number of roof tiles required. Determining precisely how many roof tiles are needed for a project will require careful calculation based on all these factors.

Comparing roof tile sizes and coverage capacity

The table below can help you determine approximately how many roof tiles are needed per square metre for a project. Pantiles and interlocking tiles are usually larger than plain tiles, so fewer tiles are required. 

For a rough estimate of how many tiles are needed, multiply the size of the roof (in metres squared) by the roof covering capacity (see chart below).

So, for example, the calculation for a 100m2 roof covered in Marley Acme tiles would be:
100x60=6,000 tiles

 Marley roof tile sizes and covering capacity
 Product Material Type Tile size (mm) Minimum headlap (mm) Maximum gauge (mm) Roof covering capacity (tiles/m²)
 Acme Clay Plain 265 x 165 65 100 60 (100mm gauge)
Ashdowne Clay Handmade plain 265 x 165 65 100 60 (100mm gauge)
Canterbury Clay Handmade plain 265 x 165 65  100 60 (100mm gauge)
Eden Clay Pantile 342 x 247 72 270 17.2 (72mm headlap)
Hawkins Clay Plain 265 x 165 65 100 60 (100mm gauge)
Lincoln  Clay Interlocking pantile 370 x 247 75 295 15.3 (75mm headlap)
Anglia  Concrete Interlocking pantile 387 x 230 75 312 15.7 (75mm headlap)
17.1 (100mm headlap)
Ashmore  Concrete Plain 267 x 333 77 190 17.5 (77mm headlap)
19 (92mm headlap) 
Double Roman  Concrete Double Roman 420 x 330 75 345 9.7 (75mm headlap)
10.4 (100mm headlap)
Duo Edgemere  Concrete Inerlocking slate 420 x 330 75 (22.5° and above)
100 (below 22.5°)
345  9.7 (75mm headlap)
10.5 (100mm headlap)
Duo Modern  Concrete Interlocking 420 x 330 75 345 9.8 (75mm headlap)
10.6 (100mm headlap)
Ecologic Ludlow Major  Concrete Interlocking 420 x 330 75 345 9.8 (75mm headlap)
10.6 (100mm headlap)

Edgemere

Concrete Interlocking 420 x 331 75 (22.5° and above)
100 (below 22.5°)
345 9.7 (75mm headlap)
10.5 (100mm headlap)
Ludlow Major  Concrete Interlocking 420 x 330 75 345  9.8 (75mm headlap)
10.6 (100mm headlap)
Ludlow Plus Concrete  Interlocking  387 x 230  75  312  9.7 (75mm headlap)
10.5 (100mm headlap)
Mendip  Concrete  Interlocking double pantile 420 x 330 75 345  9.7 (75mm headlap)
10.5 (100mm headlap)
Modern  Concrete  Interlocking  420 x 330 75 345  9.7 (75mm headlap)
10.5 (100mm headlap)
Plain  Concrete  Interlocking  267 x 165  65 100  9.7 (75mm headlap)
10.5 (100mm headlap)
Riven Edgemere  Concrete  Interlocking slate  420 x 330  75 (22.5° and above)
100 (below 22.5°) 
345  9.7 (75mm headlap)
10.5 (100mm headlap)
Wessex  Concrete Interlocking 420 x 330 75 345 9.7 (75mm headlap)
10.4 (100mm headlap)

If the roof specification differs from the standard details (for example, batten gauge or headlap are different), please contact our technical team for advice.

Other types of tiles

When calculating how many roof tiles are needed for a project, be sure to also consider the other types of tiles that are required to complete the roof. 

For example, there are hip and valley tiles, verges, angle tiles, ridges, stop ends and ventilation tiles. These products are available in a variety of colours, materials and designs to ensure compatibility with your roof tile of choice.

Roof tile sizes, amounts and other specification advice from Marley

As experts in roof tiles, Marley offers a complete roofing system with everything you need to build a safe, secure and attractive roof - and our products are backed by a market-leading warranty and excellent technical support

Whether you need assistance determining the best roof tile size and type for a project or calculating how many roof tiles are required per square metre, our technical team is on-hand to answer your questions. Please contact us for specification help.