Sandtoft BritLock Slate

Of all the products made to simulate the look of natural slate, BritLock’s qualities give it the edge.

A lightweight, fully interlocking slate with a thin leading edge made from 80% recycled slate. BritLock’s single lap design and covering capacity of 11.7m2 offers savings through faster, easier fixing, reduced roof loadings and fewer tiles required per m2.

BritLock can be laid at pitches as low as 17.5 degrees and has led to its specification on projects as diverse as schools, churches, hotels, leisure centres, apartment blocks and town houses, as well as on traditional residential developments.

It is not purely its design which makes BritLock one of the most sustainable roofing products available. In addition to the carbon emissions saved, as a result of its light weight during transportation and installation, each tile is made from 80%
recycled natural slate sourced from UK quarries, as opposed to the majority of natural slates which are imported from overseas.

Unlike conventional slate, BritLock does not have to be graded and holed on-site and thanks to its interlocking design, there is no need to install the tile double-lapped thus offering significant savings in material and time.

  • The result – a highly competitive interlocking slate with an authentic slate appearance.
  • Rated ‘A’ under the Building Research Establishment’s (BRE) Green Guide to Specification.
  • Manufactured in the UK pitched roofing industry’s first carbon neutral factory
  • BritLock – the slate that’s breaking all the rules. Backed by British Board of Agrément accreditation.

Available Colours – BritLock Slate


Heather Blue
Heather Blue

Lakeland Green
Lakeland Green

Technical Info:- BritLock Slate

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 m&sup2 at 120 mm headlap

11.7 tiles per m&sup2 at 75 mm headlap

Cover width

300 mm

Profile depth

11 mm

Hanging length

354 mm

Weight as laid

19.5 kg per m&sup2 at 120 mm headlap

16.4 kg per m&sup2 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


Battens per m&sup2

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 clout head

Nail size/type for tile clips


Fittings:- BritLock Slate

Left Hand Verge Tile

Left Hand Verge Tile-and-a-half

Right Hand Verge Tile-and-a-half

Angle & Legged Angle

Monopitch Ridges

Angle & Legged Angle Ridges

Fibreglass Valley

Verge / Valley Clip

Contact John for more information or give us a call on 0161 724 4004