skua@architecture
Splashed #Limewash / #Whitewash on a window.And also wondered about using it in hot weather.
Whitewash has been extensively used to reduce heat coming into greenhouses. And would doubtless function that way for domestic dwellings.
Pros
More effective / reflective than yoghurt?
Cheaper over large areas?
Cons
More risk to eyes/skin when applying / removing.
Prob more mess on and off.