TotalBoat cabosil fumed silica thickening agent 5 Quarts

Silica Thickener


Extremely fine fumed silica powder is an additive used with epoxy systems and polyester resins to create a smooth, non-sagging, high-strength mixture for structural bonding, filleting and filling. Use alone or with other fillers.

SKU: N/A Category:

Product Description

  • Fumed silica thickens epoxy and polyester resin systems to prevent sagging or slumping on vertical and overhead surfaces
  • Creates a smooth, strong filleting compound
  • Cured surface is extremely hard and abrasion resistant
  • Creates secure structural bonds on porous and non-porous surfaces
  • Fills holes and gaps
  • Always wear proper safety protection when blending Silica Thickener or other fillers into mixed resin/hardener
  • Product Color: White
  • Cured Color: Dull White
  • Sizes: Available sizes include 1 Quart, 5 Quarts, and 10-lb. bag

Where to use TotalBoat fillers

Silica Thickener can be used alone or combined with other fillers to achieve the desired properties. For example, blend into mixed resin/hardener along with TotalBoat Glass Microballoons (sold separately) to allow easy sanding when fairing. Or, combine with TotalBoat Milled Glass Fibers (sold separately) for added strength and sag resistance.

TotalBoat fillers can be used with either epoxy or polyester resins to change the resin properties for various uses, such as bulking out the resin or making it easy to sand. Because fillers can affect the pot life of a resin, create a small trial batch first to determine how much working time you’ll have.

Glass Microballoons Milled Glass Fibers Silica Thickener
Fairing ✔ (blended with Glass Microballoons)
Filleting ✔ (blended with Glass Microballoons)
Vertical Surfaces ✔ (in thick enough concentration)
Reducing Shrinkage
Reducing Weight
Surfboard or Sailboard Repair

NOTE: A 5-quart quantity of TotalBoat Silica Thickener combined with the 1 Gallon Kit of TotalBoat 5:1 Epoxy, Group Size B (sold separately), will produce approximately 1.75 gallons of smooth, thixotropic epoxy filler.

TotalBoat Silica Thickener SDS

You may also like…