|
 BritLock Slate |
|
UK Registered design No. 2017033 |
|
Minimum roof pitch |
17.5° at 120 mm headlap
22.5° at 75 mm headlap |
|
Headlap (minimum) |
75 mm |
|
Headlap (maximum) |
120 mm |
|
Batten spacing at maximum gauge |
285 mm |
|
Batten spacing at minimum gauge |
240 mm |
|
Size of tile |
360 x 340 mm |
|
Covering capacity at maximum gauge |
13.9 tiles per m² at 120 mm headlap
11.7 tiles per m² at 75 mm headlap |
|
Cover width |
300 mm |
|
Profile depth |
11 mm |
|
Hanging length |
354 mm |
|
Weight as laid |
19.5 kg per m² at 120 mm headlap
16.4 kg per m² at 75 mm headlap |
|
Weight per 1000 |
1.4 tonnes |
|
Weight per slate |
1.4 kg |
|
Weight per pallet (including pallet/packaging) |
0.7 tonnes |
|
Quantity per pallet |
500 |
|
Battens per m² |
4.2 m at 120 mm headlap
3.5 m at 75mm headlap |
|
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 slates |
38 x 2.95 mm aluminium ring shank (supplied) |
|
Nail size/type for tile clips |
N/A |
Note: unless otherwise stated, data is based on tiles laid at minimum headlap.
A natural weathering of the recycled slate will result in a change to the exposed
surface, replicating the appearance of natural slate. Contact Sandtoft Technical Services
for further information or to request a mini-sample which shows the comparative
change to the surface appearance due to weathering, the rate of which depends
on the local environment, climate and aspect of the roof.
Slight colour variations may exist between batches. Slates should be randomised
on site to achieve a consistent appearance when installed.
Rafter length restrictions apply at minimum roof pitch. For projects where the
rafters are below the minimum recommended roof pitch, please contact Sandtoft
Technical Services on 0844 9395 999.
*Concealed ventilators must not be used on roof pitches below 22.5°.
Tile Fixing
Sandtoft roof 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.
