Description Smith & Rodger Blockade Shellac Primer is a high-performance, shellac-based primer and sealer formulated to permanently block severe interior stains while providing exceptional adhesion on difficult and non-porous surfaces. Designed for professional decorators and refurbishment projects, it delivers rapid drying, outstanding stain isolation and reliable surface preparation prior to decoration. Using shellac technology, this primer effectively seals in stubborn stains such as nicotine, smoke damage, water marks, grease, soot and tannin bleed from wood. Once dry, it forms a tough, impermeable barrier that prevents stains from reappearing through subsequent paint finishes, ensuring a clean, uniform and long-lasting result. Blockade Shellac Primer offers excellent adhesion to a wide range of challenging substrates, including varnished or stained timber, glossy painted surfaces, PVC, metals, tiles, glass and ceramic finishes. This makes it an ideal solution where conventional primers fail to bond or adequately seal problem areas. Its fast-drying formulation allows for minimal downtime on site, making it particularly suitable for time-sensitive projects. Once cured, it can be overcoated with most decorative paint systems, including both water-based and solvent-based finishes. Key Features & Benefits Shellac-based primer with superior stain-blocking performance Permanently seals nicotine, smoke, water, grease and tannin stains Excellent adhesion to glossy, smooth and non-porous surfaces Fast drying for rapid recoating and reduced downtime Prevents stain bleed-through on final paint finishes Suitable for interior walls, ceilings, woodwork and trim Compatible with most decorative paint systems Coverage Approx. 10–12 m² per litre, depending on surface porosity and application method Drying Times (at 20°C) Touch dry: approximately 15–30 minutes Recoat: approximately 45–60 minutes Drying times may vary depending on temperature, humidity and surface conditions. Typical Applications Smoke- and nicotine-stained walls and ceilings Water-damaged and heavily marked interior surfaces Varnished, stained or resinous timber Glossy, tiled and non-porous substrates Refurbishment, restoration and problem-surface priming
