All unfinished wood or bare wood surfaces should always be primed prior to painting. This goes for both interior and exterior paint projects. The reason you cannot skip bare wood priming is that wood is porous and has a grainy surface. Because primer contains high solids, it helps fill grains in the new wood.
Oil-based primers are ideal for interior and exterior unfinished or bare wood because they seal the porous surface of wood, enabling the coat of paint to better cover the surface. They stop tannins, released from woods, such as cedar or redwood, from bleeding through the surface of the paint.
When learning how to paint unfinished furniture, it's important to acknowledge that preparation is the key to a good finish. As a result, you'll need to sand your piece in order to provide a smooth surface that will hold paint well.
If you're painting wood without a stain or finish, use a latex or an oil-based primer for the best results. Don't over or under apply the primer: You should aim to apply two coats of primer to your wood's surface. Brush the primer on, and allow the first coat to dry completely before adding the second coat.
Wood – For bare wood that's never been painted, apply two coats of an oil- or water-based primer. Oil-based primers generally perform better on bare wood, but water-based primers can work well on smooth softwood surfaces.
Oil-based primer
The average time for oil-based primers to cure is about 24 hours. The paint will be dry to the touch in a few hours, but it will take longer than that for the primer to harden completely (cure).
Whether you are using lumber fresh off the market or refreshing an old piece of furniture, it is important to sand it first to remove any surface irregularities and the old paint. The goal is to prepare the wood to receive the new, fresh paint coat.
Because it soaks in similar to a stain, Milk Paint is THE best paint to use on a raw wood surface with no existing finish.
If you don't properly prepare the wood, moisture damage could destroy the wood, or natural tannins may bleed through the paint. Wood preparation is time consuming, but it's not overly difficult. With the right know-how, a novice painter can paint untreated wood surfaces for an even, clean, professional appearance.
Paint Or Seal Unfinished Furniture
Bare wood, when left unfinished, keeps your furniture with a natural wood look but the risk is exposing it to harsh elements, even if it's indoors, such as light, dust, moisture and water damage, making it more susceptible to stains, warping and cracking.
If sanding is your least-favorite step, then it's certainly possible to paint furniture without sanding. But to do so with favorite results, you should clean the wood's surface AND use a high-quality primer and/or paint.
This interior and exterior primer is specially formulated to be a sound undercoat for paint and will help enhance the topcoat's performance. It has excellent adhesion to both interior and exterior surfaces including masonry, metal and excellent penetration for bare wood.
KILZ® Original Primer has been trusted by pros for over 40 years and the KILZ Original lineup includes a primer formulated for outdoor projects. KILZ® Original Interior | Exterior Primer is an all-weather sealer with excellent adhesion to even the toughest to paint surfaces like masonry or bare, porous wood.
To recap, the best exterior primer is KILZ Premium High-Hide Interior/Exterior Primer/Sealer because it's an easy-to-use, less-toxic product that blocks out even prominent stains and surface imperfections while ensuring a long-lasting seal, and both latex- and oil-based paints adhere to it well.
Wood primer is the undercoat of preparatory coating put on wood, specifically, before you use paint on it. Using a wood primer increases the durability of your paint job, ensures better adhesion of the paint to the surface, and helps protect the wood that's being painted.
If You Are Going To Paint Over Bare Drywall or Unfinished Wood. You will want to use 2 coats of primer as the first coat of primer may soak a bit into the material coating the walls.
New paint will not easily stick to a smooth surface. Thus, if you don't sand the paint job (at least a little bit), your paint will begin to flake and peel in no time at all. A little bit of surface roughness will provide the traction that is needed for the paint to stay in place.
This also causes paint to dry more slowly, making your paint job more difficult, and can even lead to just as uneven a finish as if you hadn't used primer at all. One to three coats of primer is perfect for any paint job in your home.
With fresh drywall, the substrate actually absorbs a coating really well, like a sponge. However, because it absorbs so well, without a primer coat, you'll experience uneven coverage, especially along drywall seams. This means you'll need to apply more paint to finally get an even coat.
Most projects where you're going over a previously-painted surface do not require the use of a primer. In many cases all you'll need to do is spot-prime any bare areas that need to be addressed before applying your finish.
Drying times for oil-based primers can vary significantly, with some primer products capable of drying in just 30 to 60 minutes, while others may take up to 4 hours.