When to Use Primer Before Painting: A Guide for Homeowners

1. New Surfaces:
   Primer is essential when painting new, unpainted surfaces, especially porous ones like drywall, wood, or concrete. These surfaces can absorb paint unevenly, leading to an inconsistent finish. Primer seals the surface and provides a uniform base for the paint.
2. Stained or Discolored Surfaces:
   If you're dealing with stains, discolorations, or existing paint that is significantly darker or lighter than your desired color, using a primer is crucial. It helps block out these imperfections and prevents them from bleeding through the new paint.
3. Bare Wood:
   Wood is notorious for soaking up paint unevenly and causing the paint to peel or chip over time. Primer helps prevent this issue by sealing the wood's pores and providing a stable base for the paint.
4. High Gloss or Satin Finishes:
   If you're painting over a surface with a high-gloss or satin finish, using a primer is a good idea. These surfaces can be too slick for paint to adhere properly, so primer adds texture and adhesion to the topcoat.
5. Significant Color Changes:
   When making a drastic color change, especially from dark to light or vice versa, using a primer with tinting can save you from applying multiple coats of paint.

1. Improved Adhesion:
   Primer creates a bonding layer between the surface and the paint, ensuring better adhesion. This means your paint job will be more durable and longer lasting.
2. Enhanced Paint Coverage:
   Applying primer allows you to use less paint because it provides a consistent and even surface. This can save you money on paint and reduce the coats needed.
3. Stain and Odor Blocking:
   Some primers are specifically designed to block stains from bleeding through and to seal in odors, making them ideal for rooms with water stains or lingering smells.
4. Smoother Finish:
   Primer helps to fill in imperfections and create a smoother surface for your paint, resulting in a more professional-looking finish.
5. Longevity:
   A properly primed surface can extend the life of your paint job. It helps to protect the underlying surface from moisture, mildew, and other damaging factors.