You can use any of our topcoats.
Water-based products include General Finishes High Performance or General Finishes Flat Out Flat.
Oil-based products include General Finishes Gel Topcoat or General Finishes Arm-R-Seal. Gel Topcoat is thick, while Arm-R-Seal is much thinner, and is easier to apply large projects.
Always allow 72-hour dry time when applying water-based products over oil-based products.