Allied Aerosil (Fumed Silica Thickener)

Allied Aerosil (Fumed Silica Thickener) is the thixotrope which makes the resin and gelcoat non drip, thixotropic resins will have between 0.75 – 1% by weight included in the formulation and gelcoats around 2.5% .

Its not that easy to disperse this without a mechanical stirrer – it will go in if you mix it in by hand but it wont develop its full effect if not well mixed.