Die Hardener 0 my - 250 ml Refill Bottle

Gypsum hardener that penetrates completely into the plaster. Hardens, seals and smooths the plaster surface. Protects against mechanical stress. Best results when applied before duplication. Dirt and water repellent. Not suitable as a primer as the adhesion between varnish and hardener is not optimal and the hardener's solvents could attack previously applied varnish layers.