You'd need to sand it down if it has a finish on it.
Do You Have to Sand Before Staining Wood? Wood needs to be sanded well before it can be stained. The process opens up the wood's pores to better absorb the stain. It also smoothes away scratches in the surface which will only be enhanced by stain.
Can you paint over stained wood without sanding? Yes, but you still MUST DE-GLOSS or your paint will all flake off. Scared yet? Good.
Yes, it's generally a good idea to sand an old stain before restaining wood. Here are the reasons why and some steps to consider: Remove Old Finish: Sanding helps to remove the old stain and any finish that may be on the wood, which allows the new stain to adhere better.
If it is finished hardwood or plywood you are gonna have to sand off the finish before staining, stains won't be able to properly penetrate the wood through the finish.
You don't have to worry about sanding off the existing stain like you would if you were fully refinishing it with a traditional wood stain. Just lightly scuff the surface to give it some “tooth” so the gel stain will have the best adhesion.
Minwax® PolyShades® is an easy way to change the color of your currently stained or polyurethane finished wood. There's no stripping or heavy sanding necessary to remove the old finish!
If you sand in between coats of stain, you risk breaking the color and damaging the stain. Instead, you should sand the raw wood before applying a stain. Take a look at our recommended best practices for sanding to ensure that your wood piece is ready for staining.
When we re-stain decks, we do a thorough pressure wash first. Clean all the dirt and such off, and spray off anything chipping/flaking. Let it dry out, then re-stain. If you come across anything chipping/flaking, just scrape it off after it dries.
With oil-based topcoats, the more coats you apply, the darker and richer the wood will become. With water-based topcoats, sand any "grain-raise" smooth before applying the final coat. Note: Sanding between coats is not necessary, but it will provide a better finish.
Poor paint adhesion is one of the most common consequences of skipping the sanding step. Without sanding, the cabinet surface remains smooth and may have a glossy finish or residual substances that hinder the paint from properly adhering.
Re-Stain the Wood
Use a paintbrush or foam brush to apply a thin, even coat of stain. Wipe off any excess stain after a few minutes to prevent further blotchiness. Allow the stain to dry according to the manufacturer's instructions.
Sanding is a crucial step in preparing wood for staining, as it helps achieve a smooth and uniform surface that allows the stain to penetrate evenly. However, it's essential to understand the right sanding techniques and the appropriate grit range for different wood types to achieve the best results.
To paint over stained wood trim without sanding, clean the trim thoroughly with a degreaser or a mixture of water and mild detergent. Apply a bonding primer designed for glossy surfaces to ensure the paint adheres well.
As a general statement a second coat can be applied if and ONLY if the first coat absorbs down into the wood within 60 minutes on wood that has been installed for at least a year.
The level of your prep depends on the current condition of your deck and the type of stain used. If the deck has a previous coating, such as a solid or semi-transparent stain, varnish, or water sealer, etc, this will ideally need to be stripped away or sanded before restaining.
Whenever water or any stain or finish that contains water comes in contact with wood, it causes the wood fibers to swell, which is called “grain raising” or “raised grain.” After the water has dried the wood feels rough to the touch, and thinly applied finishes also feel rough.
Let water-based stains dry for two to three hours and oil-based stains for four to six hours before applying a polyurethane sealer. The best way to get a smooth finish is to apply the first coat of sealer, let it dry, and then lightly sand the surface with 220-grit sandpaper before applying a second coat.
If you apply a second, unnecessary coat of stain to wood that is already adequately covered, you risk creating a tacky surface that is prone to early peeling because the second coat is not penetrating the wood surface, but simply laying on top of the first coat of stain.
In some cases, you can get away with leaving the previous coat as it is, as long as you perform the other necessary preparation steps, such as sanding and power washing. If, for instance, the new stain is the same brand and color as the old stain, you might not need to go through the complete removal process.
Clean it, scuff sand it well, wipe all dust away thoroughly and then use gel stain. Go very thin and layer until desired color reached.
Apply a Liquid Deglosser
This product helps you prepare the surface for new stain or paint without the need to strip or sand. Wipe it on with a cloth, and it removes the glossy top layer, making the surface ready for refinishing.
Apply a second coat of stain after the first has dried fully. This will usually produce a darker coloring, but it adds a step to the process and slows production.