Ship of Theseus inspired question about the board school

[Harmonica]

https://en.wikipedia.org/wiki/Ship_of_Theseus

How much of the board school is actually made from the same stuff as it was in 1888?

[Robert]

I imagine it's the same bricks underneath, repointed etc.

http://www.rightmove.co.uk/property-for-sale/property-48476981.html

[Ginger]

The bricks almost certainly (beyond a few damaged ones) would be re-used. Even in the States, with our mania for knocking down old buildings and putting up new, it's standard practice to salvage the bricks and re-use them in new construction. They just don't wear out, it's economical, plus old weathered bricks have a visual appeal that new ones do not.

Here, you've got a building that already has all the bricks it needs already in place. Why swap them out?