Installing clay roof tiles requires expertise to ensure a durable, watertight finish. While we recommend hiring experienced professionals like the West Country Tiling team for this work, here is an overview of the general process:
- Prepare the roof – begin by inspecting the roof structure to ensure it can support the weight of clay tiles. Assess condition of roof timbers and prepare for any carpentry work that may be required.
- Insulation – check and install as necessary to comply with Building regulations.
- Vents – install any eaves vents that are required.
- Install roof felt and battens – lay a breathable underlay or roofing felt across the roof laid in accordance with BS5534. Fix timber battens over the underlay at appropriate spacings, depending on the size of the tiles.
- Tile alignment – mark the roof with chalk lines to ensure the tiles align correctly.
- Lay the tiles – begin at the eaves (the lowest edge of the roof) and work upwards. Position the tiles so they overlap correctly, ensuring effective water drainage. Clay tiles often follow a single or double-lap pattern, depending on the design and manufacturer recommendations. Secure the tiles using nails or clips, ensuring they are firmly fixed but not overtightened to allow for natural movement caused by temperature changes. Regularly check for straight lines and consistent overlap as you progress.
- Fit ridges and flashings – install ridge tiles along the apex of the roof to provide a neat and watertight finish at the top. These can be secured using a mortar bed or a modern dry ridge system. Add flashings made of lead or other waterproof materials around chimneys, valleys, and roof edges to prevent water ingress in vulnerable areas. Properly fitted flashings are essential for long-term durability.
- Final check – once all tiles and fittings are in place, conduct a thorough inspection of the roof. Check for any misaligned or loose tiles, gaps, or exposed areas that could compromise the roof’s weatherproofing. Make adjustments as needed to ensure a secure and professional finish.
For expert installation and advice of clay roof tiles, contact West Country Tiling. With over 35 years of experience, we specialise in traditional roofing on listed buildings and heritage properties.