Using primer on brick before painting is often recommended to ensure better adhesion and a more uniform finish. The porous nature of brick can absorb paint unevenly, leading to a patchy appearance. Additionally, the right primer can help seal the surface, preventing moisture issues down the line. Factors like the type of paint, the condition of the brick, and local climate can all influence your decision. Curious about the best products or techniques for your specific project? Ask Improvi.ai for personalized guidance!