Sandtoft BritSlate Duchess and BritSlate Countess
Two plain slate alternatives to BritLock,
also made using 80% natural UK slate. BritSlate offers the random visual appearance of natural slate without the need for costly sorting and holing.
- A double lap slate with all the proportions and detail as natural slate
- Can perform at pitches of 20°
- BRE Green Guide rating A
- Manufactured using 100% green electricity
- Manufactured in the UK’s first carbon neutral roof tile factory
_
Technical Info:- BritSlate
Britslate Countess 510 x 255 – Technical Data
Minimum roof pitch
22.5°*
Size of slate
510 x 255 mm
Cover width
255 mm
Profile depth
6 mm
Weight per 1000
1.3 tonnes
Weight per slate
1.3 kg
Weight per crate (including pallet/packaging)
1.4 tonnes
Quantity per crate
1000 tiles
Batten size – up to 600 mm rafter centres
50 x 25 mm
Nail type/size for slates
38 x 2.95 mm aluminium ring shank clout head
Note: Unless otherwise stated, data is based on slates laid at minimum headlap
Britslate Duchess 610 x 305 – Technical Data
Minimum roof pitch
20°
Size of slate
610 x 305 mm
Cover width
305 mm
Profile depth
6 mm
Weight per 1000
2.0 tonnes
Weight per slate
2.0 kg
Weight per crate (including pallet/packaging)
1.5 tonnes
Quantity per crate
750 slates
Batten size – up to 600 mm rafter centres
50 x 25 mm
Nail type/size for slates
38 x 2.95 mm aluminium ring shank clout head
Note: Unless otherwise stated, data is based on slates laid at minimum headlap.
*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.
After installation, 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.
*Concealed ventilators must not be used on roof pitches below 22.5°
Moderate Exposure
Rafter pitch
20°
22.5°
25°
30°
35°
40°
45°
69°
Headlap (minimum)
Duchess
Countess
130
–
115
115
90
90
75
75
75
75
65
65
65
65
–
65
Coverage (m²)
Duchess
Countess
13.7
–
13.2
19.8
12.6
18.7
12.2
18.0
12.2
18.0
12.0
17.6
12.0
17.6
–
17.6
Batten Gauge (mm)
Duchess
Countess
240
–
247
197
260
210
267
217
267
217
272
222
272
222
–
222
Battens per m²
Duchess
Countess
4.16
–
4.05
5.08
3.84
4.76
3.74
4.61
3.68
4.65
3.68
4.5
–
4.5
–
4.5
Weight as laid (kg per m²)
Duchess
Countess
27.4
–
26.4
25.7
25.2
24.3
24.4
23.4
24.4
23.4
24.0
22.9
24.0
22.9
–
22.9
Severe Exposure
Rafter pitch
20°
22.5°
25°
30°
35°
40°
45°
69°
Headlap (minimum)
Duchess
Countess
–
–
130
–
120
115
110
100
90
90
80
75
75
75
–
75
Coverage (m²)
Duchess
Countess
–
–
13.7
–
13.4
19.8
13.1
19.1
12.6
18.7
12.4
18.0
12.2
18.0
–
18.0
Batten Gauge (mm)
Duchess
Countess
–
–
240
–
245
197
250
205
260
210
265
217
267
217
–
217
Battens per m²
Duchess
Countess
–
–
4.16
–
4.08
5.08
4.00
4.88
3.84
4.76
3.77
4.61
3.74
4.61
–
4.61
Weight as laid (kg per m²)
Duchess
Countess
–
–
27.4
–
26.8
25.7
26.2
24.8
25.2
24.3
24.8
23.4
24.4
23.4
–
23.4
Fittings:- BritSlate


Eaves Slate
Tops Slate


Slate-and-a-half Slate
Double Slate


Angle & Legged Angle
Monopitch Ridge
Angle & Legged Angle Ridges


Filbreglass Valley
Slate Hook
Contact John for more information or give us a call on 0161 724 4004
Britslate Countess 510 x 255 – Technical Data
Minimum roof pitch
22.5°*
Size of slate
510 x 255 mm
Cover width
255 mm
Profile depth
6 mm
Weight per 1000
1.3 tonnes
Weight per slate
1.3 kg
Weight per crate (including pallet/packaging)
1.4 tonnes
Quantity per crate
1000 tiles
Batten size – up to 600 mm rafter centres
50 x 25 mm
Nail type/size for slates
38 x 2.95 mm aluminium ring shank clout head
Britslate Duchess 610 x 305 – Technical Data
Minimum roof pitch
20°
Size of slate
610 x 305 mm
Cover width
305 mm
Profile depth
6 mm
Weight per 1000
2.0 tonnes
Weight per slate
2.0 kg
Weight per crate (including pallet/packaging)
1.5 tonnes
Quantity per crate
750 slates
Batten size – up to 600 mm rafter centres
50 x 25 mm
Nail type/size for slates
38 x 2.95 mm aluminium ring shank clout head
minimum recommended roof pitch, please contact Sandtoft Technical Services on 0844 9395 999.
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.
consistent appearance when installed.
Moderate Exposure
Rafter pitch
20°
22.5°
25°
30°
35°
40°
45°
69°
Headlap (minimum)
Duchess
Countess
130
–
115
115
90
90
75
75
75
75
65
65
65
65
–
65
Coverage (m²)
Duchess
Countess
13.7
–
13.2
19.8
12.6
18.7
12.2
18.0
12.2
18.0
12.0
17.6
12.0
17.6
–
17.6
Batten Gauge (mm)
Duchess
Countess
240
–
247
197
260
210
267
217
267
217
272
222
272
222
–
222
Battens per m²
Duchess
Countess
4.16
–
4.05
5.08
3.84
4.76
3.74
4.61
3.68
4.65
3.68
4.5
–
4.5
–
4.5
Weight as laid (kg per m²)
Duchess
Countess
27.4
–
26.4
25.7
25.2
24.3
24.4
23.4
24.4
23.4
24.0
22.9
24.0
22.9
–
22.9
Severe Exposure
Rafter pitch
20°
22.5°
25°
30°
35°
40°
45°
69°
Headlap (minimum)
Duchess
Countess
–
–
130
–
120
115
110
100
90
90
80
75
75
75
–
75
Coverage (m²)
Duchess
Countess
–
–
13.7
–
13.4
19.8
13.1
19.1
12.6
18.7
12.4
18.0
12.2
18.0
–
18.0
Batten Gauge (mm)
Duchess
Countess
–
–
240
–
245
197
250
205
260
210
265
217
267
217
–
217
Battens per m²
Duchess
Countess
–
–
4.16
–
4.08
5.08
4.00
4.88
3.84
4.76
3.77
4.61
3.74
4.61
–
4.61
Weight as laid (kg per m²)
Duchess
Countess
–
–
27.4
–
26.8
25.7
26.2
24.8
25.2
24.3
24.8
23.4
24.4
23.4
–
23.4
Eaves Slate
Tops Slate
Slate-and-a-half Slate
Double Slate
Angle & Legged Angle
Monopitch Ridge
Angle & Legged Angle Ridges
Filbreglass Valley
Slate Hook