Fire Varnish Interior OvercoatA fire protection overcoat for use over other Thermoguard products. Product Description: Thermoguard Fire Varnish Overcoat is a part of a varnish system with the option of a clear, tinted or stained finish for Fire Protection of internal timber and timber derivative substrates. Product Uses: The special water based formula provides durable finish to internal wood. Clear or stained finishes enhance the natural beauty of the wood while fire protecting