Preparing to paint your entire home s exterior certainly not going to hurt anything priming entire exterior but most of surfaces not required.
Paint primer over exterior bare wood siding.
Great for wood trim doors and walls.
For decades the professional paint preparation protocol was to prime unpainted wood with oil based primer and then topcoat it with at least two coats of latex paint.
Next you re ready for a coat of an alkyd primer which has resins that help preserve the wood.
This combination insures proper adhesion sealing also weatherproofing.
Any places you scraped off to bare wood.
The first application of primer was absorbed immediately into the wood but the second application of primer did a fantastic job of covering the weathered siding.
An oil based primer is usually best for painted wood that shows chalking a chalky powder on the surface as the paint binder degrades or chipping.
Penetrates and seals bare wood for strong adhesion and a long lasting finish.
As a general rule use an alkyd primer and a latex topcoat when repainting.
The thinking was that the.
Cedar and redwood for example usually require an oil based primer to seal the surface so that tannin stains don t bleed through the topcoat.
Get this wrong and you can cause damage to the property or surface that can lead to expensive repairs.
Places to use a high bonding exterior primer is any places you just filled.
Be sure that your primer is appropriate for the surface you re painting.
To help get this purchase right the following exterior primer guide will help clear a few things up.
A primer is only going to work well if you know what to look for.
Zinsser b i n primer sealer great interior primer both for bare and painted wood zinsser is a brand that is a part of the rust oleum family of paints and primers.
Adheres to previously painted surfaces and bare wood where stain blocking is not required.
Anything you paint needs a primer to protect what s underneath and one of the most important surfaces for using a primer on is wood.
Sure you can paint bare wood with a high quality exterior paint but if you want it to last prime it first.
It will dry into a denser smoother.
Allows finish coat to achieve full and consistent sheen.
Those troubled spots say where oils are seeping through siding a good coat of exterior primer over old paint is recommended.
What to look for in an exterior primer coverage.
For the second coat of primer use an acrylic latex to prime for all top coats.
Shellac based primer can be thought of as heavy duty stuff.
Hardboard siding may also require a primer.
After the first coat of primer seal window surrounds and door joints with siliconized acrylic latex caulk.
Smoothest most luxurious finish.
