Roof Assembly for Hot-Humid Climate
We are working on a remodel project in Central Florida. At one time someone enclosed a porch with 2″ Expanded polystyrene. This does not work well enough for the new project. We are debating on finishing the roof as this picture drawing A, Using 1×4 furring, air space, reflective barrier then 2 layers of ISO rigid insulation. Would it be better to use two layers of furring where it would create two separate sealed air spaces also using two layers of reflective barrier as in Drawing B ?
Is there any suggestions to improve this detail?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part