Primer and paint work together to create a smooth, durable, and long lasting finish. Many homeowners are unsure when to use each product, so this FAQ breaks down how they differ, why they matter, and when a professional painter will recommend one or both.
What is the main difference between primer and paint?
Primer prepares the surface. Paint finishes the surface.
Primer seals, bonds, and evens out walls while paint provides color, protection, and the final appearance.
Why is primer necessary before painting?
Primer improves adhesion, blocks stains, evens out porosity, and gives paint a consistent base. It also increases durability and helps the final color look uniform.
Are there different types of primer?
Yes. Common types include stain blocking primer, bonding primer, and drywall primer. Each one is designed for specific situations like covering smoke damage, painting over glossy surfaces, or sealing new drywall.
When should I use primer instead of just paint?
Primer is needed when
- painting bare drywall
- covering dark or saturated colors
- painting over glossy or oil based surfaces
- sealing stains from water, smoke, or pets
- addressing patches or repairs
- painting raw wood, metal, brick, or masonry
Can I skip primer if the wall looks clean?
It depends on the surface. Clean, previously painted walls in good shape may not require primer. But any repairs, color changes, stains, or sheen differences usually make primer necessary.
Are paint and primer in one products a good option?
They work well for minor color changes or walls that are already in good condition. They do not replace true primer for difficult surfaces, stains, or bare materials.
What does primer do for new drywall?
New drywall absorbs paint unevenly. Primer seals the surface, prevents flashing, and helps the paint look smooth and consistent.
Do wood surfaces require primer?
Yes. Bare wood requires primer to prevent tannin bleed, ensure proper adhesion, and provide a stable base for paint.
How many coats of primer do I need?
Most surfaces need only one coat of primer. Heavy stains, extreme colors, or porous surfaces may require two coats for full coverage.
How do I know if I need primer for an exterior project?
Exterior surfaces like raw wood, metal, patched areas, or surfaces with peeling paint usually require primer. Your painter will determine the best primer based on weather resistance and surface condition.
Where can I find high quality primers and paints?
Randall’s carries a full range of primers and specialty coatings for interior and exterior use. Browse options here:
Shop Paint Collections
Can Randall’s help me choose the right primer for my project?
Yes. Randall’s specialists can recommend the correct primer and paint combination based on your surface type and project goal. Explore available services here:
Randall’s Services
Where can I hire a professional painter if I need help?
If you prefer to have a professional manage the surface preparation and painting, request support here:
Painter Order Form
Who can I contact for more guidance about primers and paint?
You can reach the Randall’s team directly for expert support or product recommendations here:
Contact Randall’s