Smooth surface and square cut edges
A smooth surface and square cut edges give a low profile slate at an economical price, particularly suitable to complex roof geometries down to 15°. This market leading light weight roof slate is now available in five new colours and three shapes providing even more design flexibility. With its low wastage and ease of installation, it's easy to see why it is the product of choice for all types of new build and refurbishment projects.
Used on a variety of applications, Thrutones provide the flexibility to create inspirational roofs and facades, examples include Canon Popham School in Sheffield and the stunning curved roof of the Cavell Centre in Peterborough.
If you would like to find out more about our truly complete roof system, underwritten by a 15 year warranty, please click here.
Click on a colour to view a larger version and to select a sample
600mm x 300mm
500mm x 250mm
Minimum pitch (100mm lap)
Moderate exposure: 22.5°
Moderate exposure 22.5°
Severe exposure: 25°
Severe exposure 25°
Minimum pitch (110mm lap)
Moderate exposure 20°
Severe exposure 22.5°
Low pitch application
15° - 17.5° @ 4m max. rafter length
17.5° - 20° @ 6m max. rafter length
Full roof 35 minimum pitch
100mm lap 13.4
100mm lap 20.0
110mm lap 13.6
100mm lap 20.4 (0.20kN/m2)
100mm lap 21.3 (0.21kN/m2)
110mm lap 20.9 (0.20kN/m2)
100mm lap 4.00
100mm lap 5.00
110mm lap 4.08
38 x 25 mm for rafters / supports not exceeding 450mm centres
50 x 25mm for rafters / supports not exceeding 600mm centres
Slate nails (Copper to BS1202-2) 30mm x 2.65mm
Please click here for further information on batch codes and special considerations
Need a complete roof system? We’ve got you covered. Welcome to the most comprehensive roof system on the market. At Marley Eternit, we’ve pulled together all the elements you need to specify high-performance roofs for any type of scheme into one advanced solution. So now you can source everything – from the battens and underlay, through to the roof covering, components and fixings.
If you know the pitch of your roof then please enter it below, if not please leave it blank
Unfortunately your search criteria has not returned any viable results. Please review your selections and try again.
Enter your address, town, or postal code to find stockists near you
Can achieve an A+ rating in the BRE Green Guide to Specification
Manufactured under high pressure and air cured
Cement, silica, fibres, pigments and fillers
> 60 years
Fibre cement is a 100% recyclable building material