If you wish to varnish a piece of painted wood furniture that is in a very humid room (kitchen, bathroom), we recommend the Worktop Varnish VPT500. This varnish offers a reinforced protection against humidity.
Polyvine Decorators Varnish - Water Resistant Clear Varnish with UV Protection - Seals and Protects Emulsion Paint, Wallpaper, Interior Wood, Furniture, Plaster & Fabric - Dead Flat Finish, 500ml.
Yes, you can varnish over varnish without sanding if the existing varnish is in good condition. Ensure proper cleaning and use a compatible varnish type. However, for the best results, light sanding and cleaning can enhance adhesion and finish quality.
When choosing a sealer for painted wood, Polycrylic is the product I recommend the most. It is the best not only for the beautiful finish it creates, but it is affordable and easy to find at the home improvement store or Walmart.
Yes, you can put polyurethane over water-based paint. Water-based polyurethane is ideal as it preserves the paint's color and dries clear without yellowing.
Typically, it is not recommended to put regular wood stain over paint, as it will not penetrate the surface.
The hydrophobic properties of Water Seal will negatively affect the adhesion of any paint applied over it. Can Water Seal be applied to painted surfaces? No. Water Seal can only be used on bare and uncoated brick, stone or concrete.
It is very important to make sure that you let your last coat of paint dry for at least 24 hours before proceeding with Clear Coat, otherwise you may end up with a streaky finish.
Polycrylic is not recommended for use over dark-colored paints or red mahogany stain, however, where it's clear appearance can become somewhat opaque or milky.
Spar-Marine Varnish is recommended for use on exterior wood, fiberglass, coated metal, or painted surfaces. It can be used on unfinished wood surfaces or previously finished surfaces. This finish can also be used over stained surfaces that have thoroughly dried.
Sanding Tips: No sanding is needed if you overcoat within 48 hours. Don't sand unless the most recent coat has dried for 24 hours. Use 320 grit to prevent scratches; sandpaper finer than 320 grit will not allow proper adhesion. Remove residue before reapplying.
This will ensure that the new varnish has something to bond to. The bottom line is that is it far better to remove any previous surface treatment - oil, sealer, polish, or varnish before re-applying varnish.
While polyurethane is water- or oil-based plastic resin, varnish is older and made from resins, oils, and solvents. Because of the higher ratio of solids, varnish is less susceptible to ultraviolet light damage. This protection makes varnish an excellent choice for projects such as outside decks and exterior furniture.
Give the varnish a really good stir before you start. Brush it on in the direction of the wood grain, to get the best finish you'll need 2-3 coats. Make sure you leave 1 hour between each coat. Before the final coat give the wood a quick sand down.
The lowdown on lacquer
Unlike varnish and other finishes, lacquer is thinner and applied via a sprayer, which makes it dry faster. It provides a finish that is even tougher than varnish, resistant to acid, alkali, and water, as well as casual bumps and knocks.
What is the best clear coat for painted furniture? Acrylic solvent-based because it has very good flowing power and high yellowing resistance.
However, to attain a clear finish- it is better to choose water-based polyurethanes. Oil-based polyurethane may slightly turn latex paint yellow.” So if your concern is maximum durability and you can live with the yellowing, feel free to use oil-based. But if you want to preserve your colors, stick to water-based.
Varathane® Water-based Floor Polyurethane is an acrylic polyurethane designed enhance the natural beauty of wood while providing excellent scratch and stain resistance. It is ideal for all interior stained, bare, or painted projects such as furniture, doors, cabinets, and trim.
Of course we always recommend using N3 Nano Finishing for your smaller wooden pieces, like your exterior furniture. If you are looking to get great results with waterproofing your exterior furniture, we recommend N3 Nano's Wood Pro Kit.
On average, Thompson's water seal will last for about 5 years. Depending on the weather patterns in your area, this deck sealer might need your attention more often. In a rainy state, you might need a fresh coat of water seal for ultimate protection every 2-3 years.
No place is harsher for painted wood than the outdoors, but additional coatings and sealants can counteract some of the exterior's detrimental effects. Sealing painted wood is simple and quick, and it can help preserve the wood's appearance and prolong its lifespan.
If you are wondering can you varnish over paint, then the simple answer is yes, you can put varnish over paint. In fact, it is a common practice to do so, especially when painting wood. Varnish adds a protective layer to the paint, making it more durable and resistant to moisture and scratches.
You may need an undercoat for wood, but there is no need to apply any primer, as the surface is already painted. If it is not practical to sand down to remove the sheen, an “adhesion” primer like Zinsser B-I-N will help your paint bond to the surface. It has the additional benefit of blocking stains and odours.