Coo-Var Shellac Prime-All

Coo-Var Shellac Prime-All is an efficient, heavy-duty shellac-based primer designed to block stains and odours effectively. Ideal for dealing with difficult stains such as nicotine, oils, watermarks, and even tar and bitumen, this product acts as an excellent base layer for a variety of finishing paints, both oil and water-based. Its quick-drying formula means a second coat can be applied within 30 minutes, ensuring faster project completion.

Application and Surface Use

This product works exceptionally well on a wide range of surfaces, including timber, wood composites, plaster, cement, and brickwork. It is specifically formulated to seal problematic areas that may bleed through subsequent layers of paint, such as those treated with tar, bitumen, or creosote. Additionally, it can be used as a spot primer for exterior surfaces. Application should be done with minimal brushwork, avoiding over-brushing to ensure an even, matt finish.

Drying Time and Overcoating

One of the standout features of this primer is its rapid drying time. Touch dry within 10 minutes and ready for overcoating within 30 minutes, it is a great choice for projects requiring quick turnarounds. A second coat can be applied as needed, depending on the surface’s porosity and the level of staining. Make sure to allow a full 24 hours for the product to reach its final hardness before applying finishing coats.

Precautions and Limitations

This product should not be used in environments with high humidity or low temperatures, as these conditions can affect drying times and overall performance. Avoid applying on surfaces that have not been properly cleaned, as this may affect adhesion. Additionally, avoid over-brushing during application, as it can cause an uneven finish. For surfaces not explicitly listed, refer to the product's data sheet or contact technical support for advice.

Compatibility

Once fully dry, this primer can be overcoated with a variety of finishing coats, including both oil and water-based paints. It works well in combination with other Coo-Var products, especially those designed for use on timber, brickwork, or cement. For long-lasting results, ensure that the recommended top coats are used and that proper surface preparation is followed.

Health and Safety

This product contains substances that are classified as highly flammable, including Propan-2-ol. Ensure adequate ventilation during application and wear protective gear. Avoid breathing vapours and prevent contact with eyes or skin. 

• UN Number: 1263