A mixture of silicate microspheres and colloidal silica for general purpose low density filling, fairing and coving. It can also be used as part of the glue make up when bonding low density cores such as PVC foams etc. where the glue joint can be difficult to fair without damaging the core either side.
The colloidal silica in the mixture gives the mixture excellent resistance to sag by producing a thixotropic component to the mix. The blend of silicate microspheres extends the filler and allows for easy sanding after curing.
