What is the weight of silica in one quart of TotalBoat Silica Thickener? Eric Boudreau March 30, 2021 15:24 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 Does TotalBoat Silica Thickener have a shelf life? Do I need to apply a primer over gelcoat before applying antifouling bottom paint? Are the TotalBoat Microballoons considered fine like the MAS Microballoons? What adhesives are recommended for King StarBoard®? What happens to epoxy when it has been stored under cold conditions? Comments 0 comments Please sign in to leave a comment.