Primer isn't exactly necessary, it's more of a an added protection that make the materials you're painting resist wear and tear. You should use primer, it's high concerned considering you're painting the outside of a house, where it's exposed to the elements (sun, rain, snow, etc).
depending of the condition of the sheet metal before painting .just use the same of good automotive primer
The best primer for painting over wallpaper is a high-quality oil-based primer. Oil-based primers are effective at sealing in the wallpaper and providing a smooth surface for painting. Make sure to properly prepare the wallpaper before applying the primer for the best results.
If you are painting on a metal roof, you definitely need a primer first.
Yes, it is recommended to use a primer before painting walls to ensure better adhesion, coverage, and durability of the paint.
Shellac primer is a type of primer made from shellac, a natural resin. It is used in painting projects to seal and prepare surfaces before painting. Shellac primer helps to create a smooth and even base for paint to adhere to, and it also helps to prevent stains and improve the durability of the paint job.
You prime it with drywall primer.
Yes, it is recommended to use a primer when painting over existing paint to ensure better adhesion and a smoother finish.
Yes, the primer should be applied evenly before painting to ensure a smooth and uniform surface for the paint to adhere to.
painting and straining
It is important to paint over primer when completing a painting project because primer helps the paint adhere better to the surface, resulting in a more durable and long-lasting finish.
You don't short of buying a better primer. I usually find it too thick.
Yes, it is generally recommended to apply two coats of primer before painting to ensure better coverage and adhesion of the paint.