Tropical Marine & Science Institute – Singapore


To provide under-screed drainage to allow entrapped water in the screed to discharge as well as protect waterproofing membrane.


VersiDrain 6P sheets were installed over the waterproofing membrane offering immediate membrane protection prior to casting. Insulation boards were positioned over VersiDrain 6P and covered with geotextile fabric followed by a reinforcing wire mesh on top. Efflorescence is minimised as the drainage sheets positioned between structural slab and topping screed prevent water and salts in the screed from migrating upward via capillary action and crystallizing on the surface.