Flame Control No. 130 Class "B" Fire Retardant Varnish Overcoat is primarily designed as a topcoat for Flame Control No. 129. Fire Retardant Varnish Base Coat. No. 130 is available in three sheens; low, semi, or hi-gloss. 600 square feet per gallon can. Clear Semi-Gloss. Flame Control Coatings LLC