coolant leaking in footwell when heater on full

Hi,

There seems to be coolant leaking into the footwell (from behind the glovebox) when heater is on full blast (and on hot)



Any guides to fix this or anyone know what the problem could be and price estimates for repair?



anyone heard of K-seal?

from the last news http://ift.tt/1pu7Df4

via IFTTT