Any filling material to increase floor height(synder)

[velu]

Hi

Is there any filling material available in the market to increase the floor height....i was told that bricks can be used but anything
economical that that...

my mason toldme that there is something called "synder" which is of low weight and it is the sold in ton
can anyone tell me current rate of it...

Regards
velu

[JollyRogers]

I am also looking for Synder for filling my sunken slab. Can anyone shed some light on the costs per ton, and the available location from where I can purchase this?

[JollyRogers]

Cinder is available in tons and costs about Rs.2000 per 1.5 ton including transportation cost. I saw a person supplying this near Huskur Gate signal.