Should You Put Primer Down Before Paint Exterior Of House?


Brand new surfaces should always be coated with primer before being painted. This is because most bare surfaces feature pores and/or numerous imperfections that will result in uneven paint coverage and poor adhesion. By priming the surface ahead of time, the paint will have a smooth, receptive plane on which to rest.


Generally, you should prime any surface before applying paint, especially wood. Outdoor wood surfaces, such as the floor and railings of a porch, are constantly exposed to moisture, temperature, and constant use and foot traffic, so priming is even more important here than nearly anywhere else to ensure a beautifully finished project.

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Frequently Asked Questions

Do I need to prime the exterior of my house before painting?

It's important to prime bare exterior wood prior to painting because it seals the grain, prevents bleed-through and improves paint adhesion. It's just as important to prime other materials, such as stucco, metal and concrete, for similar reasons. It seems like extra work, but it can save you time and paint.

How do I prepare the exterior of my house for painting?


  1. A clean surface is essential for a good paint job. ...
  2. Scrape away loose paint. ...
  3. Repair any surface flaws with a surface repair compound rated for exterior use. ...
  4. Remove old caulk. ...
  5. Repair and re-putty windows. ...
  6. Use drop cloths to protect bushes, flowerbeds, decks, lawns and sidewalks.

What order do you paint the exterior of a house?

  1. Step 1: Pressure-Wash Walls.
  2. Step 2: Repair Damaged Surfaces.
  3. Step 3: Remove Loose Paint.
  4. Step 4: Caulk Trim.
  5. Step 5: Prime Stains.
  6. Step 6: Protect Doors, Windows and Lights.
  7. Step 7: Paint Exterior.
  8. Step 8: Paint Trim and Doors.

What happens if you apply paint without primer?

Because it has a glue-like base, drywall primer helps the paint adhere properly. If you skip priming, you risk peeling paint, especially in humid conditions. Moreover, the lack of adhesion could make cleaning more difficult months after the paint has dried.

What's the best way to Prime a house before painting?

By telling your supplier what you’re painting, reading the label, and (though not always necessary) using the same brand of primer and topcoat. To make it easier for a colored topcoat to cover primer, have your paint dealer tint the primer to the approximate color of the finish coat.

Do you use primer or undercoat when painting wood?

I am painting wood work and would like to know if i should use primer then undercoat before i put the gloss on. If you are painting bare wood? first treat the knotts then use a primer/undercoat 2 coats is best then top coat of gloss.

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