Should I stain or just poly?
While staining creates a rich, deep color that highlights natural wood grain, it does not provide long-term protection. Without a protective top coat, wood can be damaged easily due to contact with water, food, or sharp objects. A polyurethane top coat protects the wood from scratches, stains and water damage.
Polyurethane wood finishes are synthetic coatings that are highly durable and water resistant, making them the best clear coat for wood protection.
Polyurethane wood finish offers durability and water resistance. This makes it a popular alternative to more traditional coatings such as shellac or lacquer. Learning how to apply polyurethane to wood can enhance the appearance of the stain. It will also protect the surface from scratches and more.
Yes. If you prefer the look of bare wood, you do not need to use stain before applying polyurethane.
If you don't want to change the color of the wood you should not use stain. Polyurethane by itself is a perfectly acceptable finish. But can't you get a clear natural stain that doesn't add color? Like the natural stain 209 from Miniwax, for example.
An oil based polyurethane will continue to amber and darken over time, while water-based poly will remain clear for the lifetime of the hardwood floor. This color difference is less noticeable over a stained hardwood floor, but an oil based poly will still exhibit an amber hue that will continue to darken over time.
DiamondFinish Clear is a crazy tough Clear Coat that can be applied Direct To Metal or over other coatings. DiamondFinish Clear is a water clear high gloss clear coat that remains permanently flexible and is able to perform in the toughest environments without yellowing, cracking or peeling.
Yes! A polyurethane wood finish looks beautiful and is one of the most durable top coats for wood finishes. It works great on stained wood, raw wood, weathered wood finishes, and painted wood finishes too.
Varnishes and oils offer a natural-looking wood finish. Varnish, shellac, and lacquer are not easy to apply, but they do offer a deep and rich look. They will also deepen and darken over time. Varnishes are the best choice for high-gloss surfaces.
- Poor thermal capability.
- Poor weatherability.
- Attacked by most solvents.
- Utilize toxic isocyanates.
- Flammable.
Is it better to brush or roll polyurethane?
How to Apply Polyurethane: When working with any finish. Use natural bristle for oil-based finishes and synthetic filament (polyester, nylon, or a blend of the two) for water-based and water-based oil-modified finishes. Don't use rollers or foam brushes—they create bubbles.
Water-based polyurethane scratches and dents easily. Oil-based polyurethane coatings provide excellent abrasion and scratch resistance. This makes them a good choice for wood floors or for any application such as cabinets, railings, or countertops where durability is critical.
Respected finishing expert Bob Flexner suggests that sanding between coats isn't necessary for proper adhesion between coats. He (and pretty much everyone else) recommends doing it anyway, mostly in order to get rid of the dust nibs.
The problem is that the stain is not fully dry. The solvent in the stain and the poly are similar and will dissolve each other b4 fully dry.
Polyurethane doesn't do that so it needs a mechanical method to stick to the previous coat. If you don't sand, the varnish will flake over time particularly if it is a high wear surface. It will also make the surface much smoother.
Polyurethane is Available in a Variety of Sheens
Satin finishes offer enough sheen for those who find the matte finish quite unappealing but still want a little bit of flatness that can hide marks. Semi-gloss is more lustrous than satin, meaning that it better reveals the natural beauty of the wood.
One alternative to structural polyurethane adhesives is epoxy adhesives. These adhesives are made from a mixture of resin and hardener. Epoxy adhesives are highly versatile.
Depending on many factors, like your lifestyle and type of finish, polyurethane can last between three to six years. However, if you see damage on your floors, it may be time to reapply a fresh finish to your hardwood.
Wood Color Change – Water Based vs Oil Based Polyurethane
Water based doesn't change the wood color, it dries clear & remains clear so wood keeps it's natural color.
While painting over polyurethane is doable, it is a process that requires some time and effort. However, when done well, it can rejuvenate old-looking cabinets, furniture, and other surfaces.
What is the toughest wood finish?
What is the most durable finish for wood? If you want to prevent damage to fine furniture, cabinets, or hardwood floors, oil-based polyurethane is the most durable wood finish available. This product is also water-resistant and UV-resistant.
Oil-based polyurethane
Polyurethane based on oil is more expensive than polyurethane based on water. This sort is the most long-lasting, making it ideal for outdoor projects. Depending on the weather conditions, oil-based polyurethanes can contract or expand, protecting wood in various climates and situations.
The easiest option is to apply a clear, water-based finish such as Minwax's Polycrylic. Two brushed coats are enough for the table's base, but apply three to the top for added protection. For more of an in-the-wood look, brush or wipe on a coat of blond shellac, such as Zinsser's pre-mixed SealCoat.
Minwax PolyShades combines stain and polyurethane in one simple step. Each coat provides rich color and lasting protection while enhancing the wood grain. This product will reduce finishing time compared with staining with one product and protecting with another.
- Varathane Water-Based Ultimate Polyurethane. ...
- Minwax Water Based Protective Finish. ...
- Rust-Oleum Triple Thick Polyurethane. ...
- TotalBoat Gleam Marine Spar Varnish. ...
- Deft Interior Exterior Water-Based Polyurethane.
- Matte. This is the least glossy kind of finish. ...
- Satin. Satin sheen is a popular choice for homeowners because it leaves the floor with a fair amount of shine—not too little, not too much.
- Semi (or semi-gloss) ...
- Glossy.
The best option is to use a varnish or lacquer to give the wood a high gloss finish. While varnish can be sprayed or brushed on, lacquer is best applied by simple spraying. Spraying makes the surface seem finer than painting as it doesn't leave any strokes behind.
- Western Red Cedar. Thuja Plicata. A real giant of a tree, available in wide boards and very easy to work. ...
- Alder. Alnus glutinosa. ...
- Sugar Maple. Acer saccharum. ...
- Brazilian Mahogany. Swietenia macrophylla. ...
- Teak. Tectona grandis. ...
- Indian Laurel. Indian laurel. ...
- European Lime. Tilia vulgaris. ...
- Obeche. Triplochiton scleroxylon.
Extremely Tough Material. Polyurethane is an extremely tough material, exhibiting outstanding cut and tear resistance. This trait correlates with many useful properties. In many cases, polyurethane elastomers will outlast metal, plastic, and rubber in highly abrasive environments.
Polyurethanes are durable products, offering many years of service. Lifetimes can vary between 3 and more than 50 years depending on the end use. An average lifetime of 15 years for refrigerators (insulated with polyurethane foam) is just one example.
Is polyurethane bad quality?
Not all polyurethane fabrics are created equal. Unfortunately, lower-end polyurethanes (PU) have given the whole category a bad name. Sure a PU fabric may look and feel great but if it's not well-made, it will breakdown in commercial settings—especially when wiped with industrial strength cleaners.
Lightly Sand With Pads and Paper
The goal is to roughen the surface a bit and rub out dust motes, hairs and drips. Pro Tip: If there are stubborn nibs that stand up to the pads, grab 280-grit and be more aggressive. Then just wipe off the dust with mineral spirits and apply another coat.
Polyurethane, Shellac, Varnish and Lacquer – Use a cotton swab with acetone on it and apply to the wood. If it becomes tacky, than it is shellac or varnish and if it beads, it has a polyurethane finish. If it is lacquer, the lacquer will dissolve completely.
You don't want to glob it on, as this can also cause bubbles. When you apply your polyurethane, work with the grain of the wood. Be careful not to apply too much pressure to the brush. You don't want to splash your brush or wipe off excess on the container of your polyurethane either, as that can cause bubbles as well.
The water in water based polyurethane tends to “react with the grain” more, so you often need to apply more coats to achieve a smooth, finish.
Cons of Oil-Based Polyurethane
Longer dry times. Dents easier due to it softer finish. The odor is unbearable (respirator use is recommended). The floor darkens over time.
How Many Coats of Water-Based Polyurethane are Necessary for a Project? Two coats of finish are suggested for most interior projects. When sealing floors, you should apply three coats. However, do not apply more than two coats in one day.
Oil-based polyurethane
Generally speaking, they take 4 to 6 hours to dry or to be ready for a second coat. While oil-based polyurethanes aren't necessarily tougher than water-based alternatives, they can be more resistant to scratching.
Now, while 3 coats is better, customers can also opt to do an additional coat of poly a year or two later. Now how about more than 3 coats. Generally, more than 3 coats of poly doesn't do much good. It's really not needed nor recommended.
It's all about adhesion. When you recoat after 2 hours you get a chemical bond between layers. If you let it go longer than that, you need to wait 24 hours so it's hard enough to sand and get a mechanical bond.
What happens if I polyurethane too soon after staining?
If your stain is not fully dry, you run the risk of your first coat of finish not drying for days. Wait at least the amount of time recommended or more if the temp is low or the humidity is high. The first coat of finish does not bond to stained wood well if it's applied to soon after the wood is stained.
Originally Answered: Should you lightly sand stained wood before applying a polyerthane coat ? NO— if you do you will have to restain. Just use a tack cloth to clean any dust off. Lightly dampen your cloth with either paint thinner or water depending on what you are using to coat your project.
Allow each coat to dry fully. To give the subsequent poly layers something to bond to, sand lightly between coats with 320-grit sandpaper wrapped around a hard block. Note: The first coat needs the most sanding to appear smooth; don't worry if it doesn't look as flawless as you'd like at first.
Sand Between Coats
Dry the first coat for a full 24 hours. If the coat feels tacky or sticky after that, let dry until it feels completely dry. Sand the topcoat with 180 to 220 grit sandpaper. Wipe off any residue after sanding.
Thus, it's best to wait until all coats have been applied and dried before walking through the room. After that final coat, your floors should be off-limits for 24 hours. This is the only way to avoid any damage. Also, if you can swing it, hold off 3-7 days before moving furniture back into the room.
Stain and polyurethane is a time-saver that provides a rich color and polyurethane in one product allowing projects to be finished quickly. Using a high quality synthetic bristle brush, apply in thin coats until uniform coverage is achieved.
To apply a stain over poly you have to do one of two things. Either remove the polyurethane down to bare wood or lightly sand the poly and apply a combination polyurethane/stain product.
The short answer is yes! In the end, there are two ways to stain over polyurethane: The first way is to use a gel stain, as this stain works best with polyurethane. The other way is to use a water-based stain, but this only works if you're applying water-based stain to a water-based poly.
Staining seals off the pores in wood, preventing it from taking water. Besides adding color, the treatment also adds a layer of protection from the sun's UV rays, minimizing or preventing discoloration.
As far as sanding, you're going to need to hand-sand all of this, with a sanding block. An electric sander will destroy your finishing work. A single pass with 220 or finer after the stain and before the poly, and a single pass between each coat.
What is the best way to apply polyurethane?
- HVLP Spray - Goes on fast and level. ...
- Brush - A good varnish brush is faster than most people think. ...
- Wipe On - Thin the poly and apply with a lint free cotton or linen cloth. ...
- Foam Roll and Back Brush - Very fast for large flat areas.
If the first layer of stain looks perfect, then great! You do not need to add a second layer. You should reserve adding a second layer only if you want a darker color for the stain. However, many times, the first layer of stain will suffice for both adequate protection and the desired color.
Polyurethane is so durable and water-resistant, it has largely replaced shellac and varnish as a wood finish. Originally, it had to be brushed on, but different formulations mean it can now be applied as a spray or by wiping it on with a rag.
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!
It requires around 2 to 4 hours for a water-based polyurethane and 6 to 10 hours for an oil-based to cure and eventually be subject to a second coating. Figures as these still vary depending on the type of base, humidity ratio, air pressure, and even the state of the woodwork.
Depending on many factors, like your lifestyle and type of finish, polyurethane can last between three to six years.
Minwax PolyShades combines stain and polyurethane in one simple step. Each coat provides rich color and lasting protection while enhancing the wood grain. This product will reduce finishing time compared with staining with one product and protecting with another.
The Cons of Staining Wood
While some stains can last up to five years, postponing re-staining a wood surface for too long can cause the job to become more complex and labour intensive. Even decks that are stripped and re-stained will still require maintenance every couple of years.
Wood stain won't adhere well to damp wood and can crack and peel. Apply stain to dry wood when it hasn't rained for several days and the forecast calls for at least two days of dry weather between 50° F and 90° F. Low-to-average humidity promotes faster drying.
👉 The main disadvantage of using stains is that it's difficult to get an even coverage. This means that you might have to apply multiple coats in order to achieve the desired result, which can add time and hassle to the project.
