What is the best material for false ceiling to a building with asbestos roofing to cut summer heat?

there is a lot of martial but  you are first see Scenery  of roofing i advice you select your ceiling after inter design if u want to know material i think like :

Bishop gypsum

GRC

Metal chassis

WOOD

Sliced asbestos

and a lot of ceiling..........................................

change with building and design   

Brick - gypsum board or GRC

gypsum board or plaster with light degrees of colors

Gypsum board is the best materiel 

FIRST YOU NEED TO INSTALL CPRX COMPOUND 

CPRX IS TYPE OF RUBBER BASED ON BITUMINOUS AND OTHER ADVESIVE OF BRUSH

THEN MAKE SPACE GAP BETWEEN IT NAD THE OTHER FALSE CEILING 

THE MATERIAL OF FALSE CEILING SHOULD BE ONE OF THESE TWO

1-  THICK SHEET OF THERMOCOLE 

2- THICK SHEET OF RUBBER FOAM

THEN COVER THE TREATMENT WITH 24 GAUTE PERFERATED ALUMINUM  PANELS