Nautix Watertight is a fast drying epoxy filler 100% watertight. Produced with high quality watertight micronized compounds, this filler is especially recommended to be applied above and below the waterline over fibreglass, rigid woods or metals. Nautix Watertight filler is also recommended to cure osmosis problems or to adjust keel profile. Fast drying (sandable in 4H at 20°C), Nautix Watertight Filler has a high resistance to mechanical and water aggressions. Easy to mix (mixing ratio 1/1 in weight and volume), to apply and to sand, it can be used without shrinking up to 10mm thickness per layer. Nautix watertight is a finishing filler with a super smooth surface.