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Technical - Double Roman

Double Roman

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Technical Data
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Minimum roof pitch*
17.5° Smoothfaced at 100 mm headlap
22.5°  Smoothfaced at 75 mm headlap
30° Sandfaced at 75 mm headlap
Headlap (minimum)
75 mm
Headlap (maximum)
120 mm
Batten spacing at maximum gauge
345 mm
Batten spacing at minimum gauge                
300 mm
Size of tile
420 x 334 mm
Covering capacity at maximum gauge
10.4 tiles per m² (at 100 mm headlap)
9.7 tiles per m² (at 75 mm headlap)
Cover width
300 mm
Profile depth
50 mm
Hanging length
398 mm
Weight as laid
46.8kg per m² (at 100 mm headlap)
43.7 kg per m² (at 75 mm headlap)
Weight per 1000
4.5 tonnes
Weight per tile
4.5 kg
Weight per pallet (including pallet/packaging)
1.0 tonnes
Quantity per pallet
228
Battens per m²
2.91 m
Batten size - up to 450 mm rafter centres
38 x 25 mm
Batten size - up to 600 mm rafter centres
50 x 25 mm
Nail size/type for tiles
65 x 3.75 mm aluminium ring shank clout head
Nail size/type for tile clips
55 x 3.35 mm aluminium ring shank clout head
BRE Green Guide rating
A+
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Note: Unless otherwise stated, data is based on tiles laid at a minimum headlap.
 
*Rafter length restrictions apply at minimum roof pitch. Please contact Technical Services for further information.
 
*Concealed ventilators must not be used on roof pitches below 22.5°
 
 

Tile Fixing

Sandtoft roof tiles/slates must be laid and fixed to comply with BS 5534: the British Standard Code of practice for slating and tiling, and BS 8000: Part 6: the British Standard Code of practice for workmanship on building sites.
To ensure compliance with these Standards we strongly recommend that either the recommendations given in the Sandtoft Zonal Method User’s Guide and Zonal tables must be followed where available or a calculated fixing specification must be obtained using Sandtoft’s Fixing SPEC service.
 
For further information go to Fixing SPEC or contact Sandtoft Technical Services on 0844 9395 999.