What is the weight of silica in one quart of TotalBoat Silica Thickener? Eric Boudreau January 15, 2021 14:22 Updated One quart of TotalBoat Silica Thickener contains roughly 55 grams (1.94 ounces) of silica.* *This weight is based upon low humidity conditions; weights may vary. Related articles Are the TotalBoat Microballoons considered fine like the MAS Microballoons? What happens to epoxy when has been stored under cold conditions? Is sanding between coats required when applying Pettit Hydrocoat? Comments 0 comments Please sign in to leave a comment.