Because the additional coat is not penetrating the wood, it is simply layered on top, which will cause the coat to be more fragile and will not offer the same level of protection as the proper amount of stain. Additionally, moisture in the wood can not escape, which will result in the stain peeling.
To get rid of the excess stain now, take a cloth dampened with mineral spirits and use that to scrub down the piece. This should remove the excess stain. Alternatively, apply another coat of stain, wait a couple of minutes for it to soften up the old, tacky, excess stain, then take a cloth and rub away the excess.
You cannot just leave it on the piece. The reason for this is that excess wood stain will never fully dry. Applying wood finish on top of tacky wood stain can result in a murky finish that obscures the wood of the piece. Instead, remove the excess wood stain.
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.
Can you change stain color on wood? Yes! In addition to trying to darken or lighten a stain, you can also just change the tone of an existing stain. Much like the process of deciding on a lighter or darker stain, you can look at your existing stain and experiment to find the new tone that is right for you.
Removal is Not Always Necessary
While it's never a bad idea to sand and strip old stain, doing so can certainly be time-consuming and challenging. 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.
Yes, you may apply stain over an already existing stain on the wood. This process is a fairly easy one as long as all the tools are available. The good thing about a staining project is that you have control over the resulting wood tones. It is easier to apply a darker wood stain than a lighter one.
Rule #1: Do not over-stain wood
While it may seem like more is better, staining wood more times than necessary will cause more problems. When in doubt, do not apply more than two layers of stain to a wood deck or log home.
Wood stain becomes sticky when it is not wiped off properly. This happens when you put too much wood stain on and do not wipe off the excess.
Staining has the extra step of removing the excess stain before it dries. You want to make sure that you remove any excess before it dries. If excess is allowed to dry on top of the wood, it leaves a glossy sheen on the wood that doesn't match the rest of the wood. This can give your wood a blotchy look.
We always recommend two coats of stain for any wood project, but you should only apply as much stain as the wood can absorb. Extremely dense hardwoods may only be able to absorb one coat of wood stain. The general rule of thumb is to apply only as much deck stain as the wood can absorb.
Depending on the type of stain you are using, most stains are dry and cured within 24 hours to 48 hours.
The new stain you are applying over the old stain should be compatible. For instance, if it's an oil-based stain, apply another oil-based stain. If it's a water-based stain, apply another water-based stain. Incompatible stains can lead to poor adhesion or blotchy and uneven finish.
Sand out the stain
To sand wood previously stained you must start by using medium-grit sandpaper followed by a progression of increasingly finer sandpaper grits. This should remove most of the color left by an old stain. If you're applying a new stain, it should mask any residual color.
If a second coat is applied, it builds the thickness and two things happen. First, the sealer or top coat cannot penetrate through the stain to grab the wood fiber. This causes the second issue, the bond now relies on the strength of the stain to bond the surface coats to the wood.
Penetrating wood stains are not intended to be a surface finish. If applied too thickly, they won't dry properly and will remain tacky to the touch. This can also happen if the wood wasn't stripped and sanded completely down to bare wood, since the stain will sit on the surface rather than soaking into the wood.
Sand. After the first “sealer” coat has dried, sand it smooth using very fine sandpaper. Not doing this is probably the single most common cause of finishes not feeling smooth after all coats have been applied. The most important thing you can do to achieve smooth results is to sand the first coat smooth.
You'll find advice online that includes wiping off the sticky stuff with vinegar and water, or using a homemade mix of equal parts turpentine, white vinegar and boiled linseed oil.
1 Before you get to work with a brush or roller, however, it's important to know exactly how long it takes for wood stain to dry. After application, wood stain can quickly dry to the touch in about four to eight hours, but it will still require about 24 to 72 hours to fully dry.
The longer a stain is left untreated, the less likely it is to be removed. When a spill first occurs, it sits on the surface of the fabric, but over time, that spill can start to react with the fabric causing the fabric to actually change colors.
Yes, each layer will darken your project even more. You can also start with a lighter color Gel Stain and layer on darker colors.
You should sand after the first coat of water-based stain to flatten any wood grain the water raised, but it's unnecessary after that.
Stains lighten as they dry, then return to their damp color when a finish is applied. So the quick method of seeing the color you'll get with the finish applied is to look at the stain while it is still damp. If you're using a satin or flat finish, however, you need to factor in the impact of the flatting agent.
Apply a second coat of stain after the first has dried fully. This will usually produce a slightly darker coloring with the excess wiped off. Substitute a glaze or gel stain for the liquid stain. Glazes and gel stains usually contain a higher ratio of pigment to vehicle.
If a pigment or wiping stain (those that contain a varnish, lacquer or water-based binder) gets the wood too dark, try removing some of the color by wiping with the thinner for the stain or with lacquer thinner or acetone.