FLAG stands for Filling, Laminating And Gluing — a fair summary of what this resin is built to do. Where MAS Low Vis is formulated to soak in, FLAG is formulated to stay put. A thicker resin for vertical and overhead work MAS FLAG Thick Resin holds a thicker bond line than our Low Vis resin, giving it better sag resistance on vertical or inclined surfaces. That makes it the better choice for gluing joints, laminating non-horizontal surfaces, and any job where you need the epoxy to stay in place rather than run. Non-blushing for less labour Like MAS Low Vis, FLAG is part of the wax-free, non-blushing 2:1 system, cured at the same simple 2:1 ratio by volume with fast, medium or slow hardener. There's no amine wax to clean off between coats, which means less labour and the option to apply a further coat or lamination while the epoxy is still in its green stage. Read more about why that's an advantage in our piece on amine blush. A strong base for fillers FLAG's higher viscosity makes it an excellent base for thickened compounds. Mixed with MAS Epoxy Colloidal Silica Filler it forms a high-strength structural adhesive, and combined with MAS Epoxy T-Cell (Cellulose Fibres) it creates a smooth, sandable filleting paste — ideal for stitch-and-glue construction and general gap filling. Blend with Low Vis for a custom mix FLAG and MAS Low Vis Resin are fully compatible and can be blended together in any proportion, letting you dial the viscosity in between the two for a specific application.
