Roof assemblies - renovation
Cleaning and Maintaining Tile Roofs (Concrete, Clay & Slate)
...nailed roofs, galvanized nails can suffer from fatigue and corrode over decades, allowing tiles to slip. This is especially true for slate. In many parts of Europe, slate tiles are 'bottom hooked.'
Over time, these metal hooks can corrode, especially on the lee side of a roof which may hold moisture longer. If you see ...