Double Roman Interlocking Tile

Large format with a classic roll profile

  • Supremely functional 
  • Excellent covering capacity
  • Can achieve an A+ rating in the BRE Green Guide to Specification*
  • Accredited to the BES 6001 standard for responsible sourcing

Click on a colour to view a larger version and to select a sample

A modern version of the roll profile seen on roofs throughout Europe for over 2000 years, the Double Roman offers all the functional benefits of today’s interlocking concrete tile technology.

All of our concrete interlocking tiles can achieve an 'A+' rating (the lowest environmental impact) in the Building Research Establishment's Green Guide to Specification (* element ref: 812410007, 812410018, 812410049).

Accreditation to the BES 6001 framework standard for 'Responsible Sourcing' means that projects using our concrete tiles can now achieve extra credits under BREEAM and The Code for Sustainable Homes. Click here to find out more.

*Please note* The British Standard for Slating and Tiling (BS 5534) has recently been updated, making significant changes to tile fixing requirements. To ensure that your roof is compliant to the new standard, our fixing specification service is available and can be accessed by clicking here

If you would like to find out more about our truly complete roof system, underwritten by a 15 year warranty, please click here.

Size of Tile

420mm x 330mm

Minimum Pitch

25° Smooth (75mm headlap)

30° Granular (75mm headlap)

22.5° Smooth (100mm headlap)

Maximum Pitch


Minimum Headlap


Maximum Gauge


Cover Width

300mm (nominal)

Covering Capacity

9.7 tiles /m² at 75mm headlap

10.4 tiles /m² at 100mm headlap

Weight of Tiling

44kg/m² (0.43 Kn/m²) at 75mm headlap

47kg/m² (0.46 Kn/m²) at 100mm headlap

Battens Required

2.9 lin.m/m² at 75mm headlap

3.1 lin.m/m² at 100mm headlap

Batten Size Recommended

38x 25mm for rafters/supports not exceeding 450mm centres

50 x 25mm for rafters/supports not exceeding 600mm centres

Tile Nails

65mm x 3.35mm

Hanging length

397mm (nominal)

Notes Nominal weight of roof tile fittings

If you know the pitch of your roof then please enter it below, if not please leave it blank

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Country of Production


Environmental Management


Quality Management


Health and Safety Management


LCA study

Can achieve an A+ rating in the BRE Green Guide to Specification


Cured under conditions of elevated temperature

Raw materials

Sand, cement, pigments, paints, recycled aggregates and binders


> 60 years


Can be crushed and used as aggregate and/or as an inert bulk fill

Embodied Carbon Rates
Measurement metric No per sq m  Headlap / gauge M₂ conversion
KgCO₂e 9.7  75  9.7
KgCO₂e  10.4  100  10.4
Here at Marley Eternit, we are always on hand to offer practical and experienced support. Whether you have a query, are unable to find what you are looking for or would like to report an issue, drop your details below and we will be in touch.
Please note: we are unable to accept sample requests through this form.