From PathfinderWiki

Redroof is a district in the southern half of Kintargo; it is unique due to its buildings being constructed from red river brick (hence the name Redroof) rather than the silver-flecked white limestone used throughout the rest of the city. A few buildings within the district are not built of brick, particularly the derelict Hocum's Fantasmagorium.1

Redroof is a lower-class neighbourhood, the red brick used is significantly cheaper than Kintargan limestone making the district more affordable but, unfortunately, the buildings hold up less well during the summer and winter extremes. Redroof is also home to Kintargo's notorious cambion slum, the Devil's Nursery, and was also home to the Cloven Hoof Society, which fought to improve cambion lives within the city.1