Valentia Slate roofing slate has been used on some of the most prestigious buildings in the world including The Paris Opera House and the Palace of Westminster. Locally it can be seen on many churches and older houses dating back over 100 years. Its strength and durability are second to none. The production required to make Valentia Slate is a very expensive process so we searched far and wide to find a more economical but similar quality slate. The result is a Brazilian tile which is a beautiful natural slate featuring the same quality as Valentia Slate tiles.