Gemini Twin Tile and Minislate FAQs
- 1. What is the tile size?
270mm long x 330mm wide.
- 2. What colours are available?
Gemini – 5 colours, Farmhouse red, Amber mix, Black, Brown and Slate Grey.
Minislate – 2 colours, Slate Grey, and Slate Blue.
- 3. What is the minimum pitch?
25º pitch
- 4. Can they be laid lower?
For advice on pitches between 22.5º and 17.5º please contact your local Roadstone location, which can be found here.
- 5. What headlap is required?
95mm
- 6. What batten spacing is required?
175mm
- 7. How many tiles are needed?
18 tiles per m²
- 8. What weight laid?
Gemini / Minislate = 51kg/m².
- 9. What ridge tiles are needed?
Universal angle (18”/457mm long). Decorative ridge tiles are available for both profiles.
- 10. Have you ridges for a single pitch roof?
Yes, we have the Mono Ridge Tile.
- 11. What fixing is required?
It depends on site location and exposure. Generally, tiles are nailed at 25º; verges should be clipped using appropriate clip. A plastic clip is available to enable secure fixing in exposed areas.
- 12. How are clips fixed?
Clips are fixed at the tail of the tile and nailed to the side of the batten holding the course below. Roadstone supply batten clips and special clips for the verges and eaves.
- 13. What kind and size nails are used?
45mm Aluminium Ringshank Nails.
- 14. What mix is used for bedding verges and ridges?
3:1 (Sand:Cement) Do not use a lime mortar. You will also need dye for the pointing, usually 6kgs (30 ridges) for a standard house.
- 15. Ventilation
In order to comply with building regulations, all roofs must be ventilated. We supply Eave and Ridge ventilation systems. We also supply the Vent Tiles and the Vent Ridge Tile.
- 16. Other Accessories. What other dry fix fittings are available?
A specialised formed plastic verge system is available to provide a neat, mortar free verge and is available for Gemini and Minislate. The Dry Hip System provides a neat and attractive finish to the hip line without the use of mortar.
- 17. Ordering
Dublin Roof Tile Sales Office
Tel: 014041275
Email: lwilliams@roadstone.ie