This is how you would fix a toxic linseed floor. Once floors are sanded and ready for application then add color to Bio Poly Natural. We don't build a film with Bio Poly Natural. It is a penetrating sealer. If multiple coats are applied it is done only the point of saturation. Once the wood stops accepting finish it is saturated and done. If a film on the surface is desired at that point we apply NanoTech Clear 00 over the Bio Poly for a beautiful finish. This process will help fix a toxic linseed floor with non toxic products that work beautifully and are good for your over all health.