Spectra-Prime Stain / Tannin High Build Blocking Primer (4:1)

Introducing Infinity Effects Spectra-Prime Blocking Primer, an advanced high-viscosity, high-build formulation engineered to deliver exceptional stain, tannin, knot, and discoloration blocking performance. Designed for superior versatility, this upgraded primer creates a thick, uniform barrier that seals and stabilizes even the most challenging surfaces, ensuring a clean, consistent base for any Infinity Effects system.

Perfect for timber, concrete, MDF, steel, plaster, drywall, and more, Spectra-Prime Blocking Primer grips securely to substrates, helping prevent bleed-through from knots, rust stains, tannins, water marks, and aged surface contamination. Its dense build fills and levels surface imperfections while providing a durable mechanical bond for both resin and water-based coatings.

Whether used indoors or outdoors, the primer’s refined formulation offers strong surface adhesion and dependable stain-blocking performance across a wide range of applications. For detailed usage guidance or system-specific recommendations,