|
 20/20 Interlocking Plain Tile |
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Minimum roof pitch |
15° at 100mm headlap
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Headlap (minimum) |
75 mm |
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Headlap (maximum) |
120 mm |
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Batten spacing at maximum gauge** |
255 mm |
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Batten spacing at minimum gauge |
210 mm |
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Size of tile |
330 x 226 mm |
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Covering capacity at maximum gauge |
22.7 tiles per m² at 100mm headlap
20.5 tiles per m² at 75mm headlap |
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Cover width |
191 mm |
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Profile depth |
16 mm |
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Hanging length |
300 mm |
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Weight as laid |
47.67kg per m² at 100mm headlap
43.1kg per m² at 75mm headlap |
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Weight per 1000 |
2.1 tonnes |
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Weight per tile |
2.1 kg |
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Weight per pallet (including pallet/packaging) |
1.1 tonnes |
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Quantity per pallet |
480 |
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Quantity per row/band |
40 |
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Quantity per mini pack |
10 |
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Quantity per layer |
120 |
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Mini packs per row |
4 |
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Battens per m² |
4.3m at 100mm headlap
3.9 m at 75mm headlap |
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Batten size - up to 450 mm rafter centres |
38 x 25 mm |
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Batten size - up to 600 mm rafter centres |
50 x 25 mm |
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Nail size/type for tiles |
45 x 3.35 mm aluminium ring shank clout head |
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Nail size/type for metal tile clips |
55 x 3.35 mm aluminium ring shank clout head |
Nail size/type for plastic tile clips |
55 x 3.35 mm aluminium ring shank clout head |
For projects where the rafters are below the minumum recommended roof pitch,
please contact our Technical Services for advice
Rafter length restrictions apply at minimum roof pitch.
Concealed 20/20 ventilators must not be used on roof pitches below 22.5°.
Note that the miniumum recommended roof pitch for concealed tile vents is 22.5°.
However, we will shortly be introducing a low profile cowl ventilator into our
range suitable for use at 15°.
** Clay tiles are subject to small variations in size because of drying and firing
shrinkage in the manufacturing process. Before deciding on the batten gauge and
linear coverage, the roof tiler should inspect each batch of tiles to ensure that
the correct minimum headlap and sidelap are achieved. For further guidance please
contact Sandtoft Technical Services on 0844 9395 999.
Note: unless otherwise stated, data is based on tiles laid at minimum headlap.
Tile Fixing
Sandtoft roof tiles 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.
