StenAst® SI is a single-component, silane-based surface conditioner prepared for all Stenkim polymer-based surface coatings, top coats and joint sealants. Unlike film-forming primers, it forms a layer just a few molecules thick, reacting with the surface at one end and with the applied material at the other to chemically strengthen adhesion. It is transparent and leaves no mark.
Areas of Use
StenAst® SI is developed for coatings and top coats applied especially on concrete, wood, fiberglass and similar surfaces. It ensures adhesion without forming a third layer between the surface and the material. It is very suitable for newly cut joints in concrete pavements; since it leaves no mark when it spills outside the joint, it does not spoil the appearance, and its short waiting time for the top coat allows fast working. Because it does not form a visible film when dry, extra care is needed when tracking the applied areas. In dusty environments, or when old joint material is removed and replaced, take extra care with surface cleaning.
Features & Advantages
- Single-component, silane-based
- Excellent surface conditioner for coatings over concrete, wood, fiberglass and similar surfaces
- Does not form a film layer
- Chemically strengthens adhesion
- Very suitable for newly cut joints
- Leaves no mark; transparent
- Short waiting time allows fast working
- Easy to apply with brush and roller