Queen's Conservation Area Geomonumental Route

Lanyon Building

The Lanyon Building is the main building of Queen's University and takes its name from the architect Charles Lanyon. It was built in 1849 in Tudor Gothic style with red-brick and Giffnock sandstone dressings.

In looking at this building we will focus on ion migration and salt weathering.

 

 

 

Iron encrustations and iron migration

The sandstone columns in the main entrance of the Lanyon building display a good example of iron encrustation. Iron minerals in the sandstone, which are the responsible of its brownish colour, release iron that migrates towards the stone surface, creating a hardened surface layer that can detach from the bulk of the block. .

Iron encrustations and iron migration

The reddish halo in this picture shows the front of iron migration which is associated with the accumulation of rainwater in relation to the plynth. The accumulation of water on the plynth also causes the greening of the stone due to the growth of algae and other microorganisms.

Salt weathering

The bricks on the south passage entrance to the main quad show intense salt weathering. Salt crystallizing within the pores and cracks of the bricks cause the surface to detach.

Resource: Decay and conservation of the Lanyon Building

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