1. Improves Adhesion – Ensures strong bonding of coatings, sealants, adhesives, or membranes to the base surface.
2. Seals the Surface – Reduces porosity of concrete, wood, or masonry, preventing absorption of the applied product.
3. Prevents Peeling/Delamination – Extends the life of the applied finish.
4. Provides Compatibility – Some coatings/membranes require primers to stick properly, especially on dusty, porous, or smooth surfaces.
5. Moisture Barrier – Certain primers act as a first line of defense against dampness.