Carnegie Observatories - Hunt Building Cast Stone Stabilzation

Carnegie Observatories - Hunt Building Cast Stone Stabilzation
Pasadena, Los Angeles County,
California, USA

The exterior cast stone trim on the historic headquarters of the Carnegie Observatories in Pasadena had been poorly treated during previous rehabilitation. High-pressure water cleaning had scoured the original cement surface and left the cast stone more absorbent and prone to deterioration when exposed to moisture. Application of special rendering compounds stabilized these surfaces and made them much more resistant to weathering.

Wikipedia Reference:

http://en.wikipedia.org/wiki/Carnegie_Institution_for_Science#Observatories_of_the_CIW

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