Stone shiplap cladding replacement tile

If it is tile hanging then yes this would be correct as every tile needs fixing. So will have to strip from top down to ensure replaced tiles are fixed properly.

Yes this is correct you need to take down from the top on a v shape to enable this tile which is broken to be replaced and nailed twice, then re-tile previously removed tiles

Yes there is an alternative email me at smart wayne 2 at g mail

If a tile on an external wall cladding has broken and is held on with nails, it may be necessary to remove the tiles above it to access and replace the broken tile. This is especially true if the tiles are interlocking or overlapping, such as shiplap tiles. Removing the tiles above will allow you to properly remove and replace the broken tile without compromising the overall integrity of the cladding. Regarding the cost of premium tiles for external wall cladding, it's challenging to provide an exact estimate without specific details about the type of tiles and the complexity of the installation. However, the range you mentioned (£60 to £80 per square meter) seems reasonable for premium tiles, including materials and labor costs. In the case of your existing 200-year-old tiles, it's difficult to determine their value or how they might impact the overall cost. It would be best to consult with a local contractor or a professional in the construction industry who can assess the situation and provide you with a more accurate estimate based on your specific circumstances and the condition of the tiles. They will be able to take into account factors such as the availability of matching tiles, potential restoration work, and any additional repairs or modifications required during the process.