Q&A for How to Apply Varnish

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  • Question
    How can I remove varnish?
    Andres Matheu
    Commercial Painter
    Andres Matheu is the Owner of Hömm Certified Painting Systems, an Interior and Exterior Residential painting business based in the Washington, DC Metro area. Andres specializes in interior and exterior residential painting, color consultations, cabinet refinishing, wallpaper removal, and epoxy flooring among other services. An EPA Lead-safe Certified Firm, Hömm Certified Painting Systems has been awarded the Best of Houzz 2019 Service, Angie's List Super Service Award 2019, and Northern Virginia Magazine's 2018 Best Home Experts (painters) award.
    Commercial Painter
    Expert Answer
    Sanding is the main method when it comes to removing varnish. If sanding doesn't do it and you need a little bit of help, there are always paint removers. With paint remover, you apply it, wait for 15 minutes to let it work, and then just scrape it off. After, you come back with the sander to completely eliminate the varnish.
  • Question
    Is it considered weird to lick varnish?
    Community Answer
    Even though there are a lot of people that have non regular food cravings, often classified as pica, you should still ask a doctor. Varnish is not good for your health.
  • Question
    Should the furniture be sanded if I applied putty on the holes?
    Community Answer
    Yes, as it smooths, cleans and opens the pore.
  • Question
    Varnish is not covering evenly on oak wood. What can I do?
    Community Answer
    Apply thin, sand, apply even thinner and sand. You are filling pores, smaller and smaller.
  • Question
    Do I need to apply sealer after sanding, but only before applying the stain and then the varnish?
    Community Answer
    You should apply sealer, let it dry for at least one hour, then sand it with 320 grit sandpaper before applying varnish.
  • Question
    What should I use to thin the varnish?
    Community Answer
    This will usually be listed on the can. Some use paint thinner, some use a mineral oil, and some use water. Fumes, technique, and finish vary somewhat.
  • Question
    How do I apply varnish to paper?
    Community Answer
    You can't apply varnish to paper, as varnish is only used on wood. But you can certainly laminate paper if you're looking for a covered piece of paper.
  • Question
    What are the procedures followed when applying varnish to furniture?
    Community Answer
    Dust, or vacuum, the furniture thoroughly. Evenly apply a thin coat of varnish to the wood surface. Let dry and do as many coats as possible.
  • Question
    What grit of sandpaper should I use to sand the final coat of varnish and smooth it out without recoating it?
    Community Answer
    Usually, you start with 80 then progress to 120, 220, 400 and 1200, but it depends on your dedication.
  • Question
    Can I use a spray gun for applying varnish?
    Community Answer
    Yes, you can.
  • Question
    What can I do to keep the varnish from running?
    Community Answer
    Either apply thinner coats of varnish, or ensure the surface where you are applying varnish is horizontal (it may, however, drip on the sides).
  • Question
    Can I apply varnish over stain after it has been polished?
    Community Answer
    No. You will need to sand the polish off first, otherwise the varnish won't stay on.
  • Question
    I didn't realize I was supposed to add thinner and already applied two coats of full-strength varnish. Should I begin using thinner now or continue with the varnish?
    Community Answer
    You can continue with the varnish. People add thinner for the first two coats so that it will dry and sand faster. If you skipped thinning, just make sure the varnish has fully dried before sanding.
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