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The E
Please allow me to retort
Burnaby, BC
reply to nyrrule27

Re: Paint a room. primer or no primer

The new primer-and-paints are fantastic. Actually, most quality paints have more or less had almost this level of coverage for years now.

The only time primer is really all that necessary in an interior setting is if:

A) it's new plaster or drywall. It needs to be sealed with a good primer coat first, then painted with one or two coats.

B) There's oil-based paint on the walls, and you're going to paint with latex. Even then, you should scuff-sand the existing paint to assist with adhesion.

C) There's a dramatic difference in existing and new colours. Say the existing walls are white and you'll be painting a dark, navy blue. Tinted primer is the way to go, otherwise you'll likely end up slapping three coats of paint on.

D) If there's nicotine, cooking stains (grease) or water damage. These conditions usually "bleed through" latex paints. They should be primed with a heavy-duty primer sealer like Kilz or Binz, etc.

I think that pretty much covers it….
"All opinions stated by me are solely my views and do not reflect the views of my employer, this site, or even myself depending on my level of sanity at the moment"

Leander, TX
I'll add one more

E) There's currently latex-based paint and you're going to paint with alkyd (oil).