How to Treat an Untreated Solid Wood?


How to Treat an Untreated Solid Wood?

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How To Treat An Untreated Solid Wood?

Untreated wood is vulnerable to moisture as well as insects and pests, such as termites. Wooden steps and patios located outdoors can quickly absorb rainwater and snow, causing the wood to warp, erode, and eventually rot. Treating wood with a water seal helps it repel moisture, block harmful insects and keep the wood looking its best.

Step 1 - Wash the wood with soap and water, and allow it to dry completely.

Step 2 - Sand the entire surface of the wood along the grain with a sander and 250-grit sandpaper to make it smooth. Hand-sand corners, edges and other areas difficult to reach with the sander.

Step 3 - Vacuum the wood to eliminate the dust and debris from sanding.

Step 4 - Apply water seal evenly over the entire surface of the wood using a paintbrush, roller or sprayer. Allow the seal to dry thoroughly.

Step 5 - Apply wood stain to the wood with a paintbrush, if desired.

Step 6 - Wait two days before walking, sitting on, or using the wood.

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That beautiful rocking chair your grandfather made. Your classic hardwood floors. The butcher block surface you added to your kitchen. Wood is a lovely material with such grace and history. To keep it looking its best, you need to condition the wood, and you may need to refinish it.

1. SUNNYSIDE Boiled Linseed Oil - The Best Oil for Wood

No doubt, Sunnyside is №1 oil for wood on the market. I and other customers can say that this is a high-quality product. It’s a perfect choice for your dry wooden pieces.

a. Linseed Oil is a plain, classic wood oil that brings out the grain finish without changing the natural colour of the wood. It’s used to strengthen the existing finish on your piece and prevent damage from over-drying and cracking. You can use it both for interior and exterior projects.

b. SUNNYSIDE CORPORATION Boiled Linseed Oil - Top Option for Dry Wooden Furniture

Boiled Linseed oil has a faster drying time than raw. Sunnyside goes on uniform and dries in only 12 to 18 hours for a smooth, uniform finish. It repels water and prevents chalking. It’s safe to use on most furniture finishes and antiques.

You won’t want to use this particular kind for any food preparations surfaces such as butcher block. The agents that are speed drying aren’t safe for consumption. Make sure you read the label clearly before using.

It’s excellent for conditioning dry wood including furniture and antiques.

  • Faster drying time than raw linseed oil
  • Brings out wood grain without changing the colour
  • Strengthens existing finishes
  • Repels water
  • Both interior and exteriors
  • Isn’t a food-safe product
  • Has a strong smell and you need protective glove

Sunnyside Boiled Linseed Oil

2. Watco Danish Oil - Great Performance on Tight Grained Woods

Watco Danish Oil is actually for interior wood with a varnish additive. It has the finishing properties of a true wood oil with the protective feature of a varnish. 

The Walnut colour brings out a deep, warm tone to the wood. It’s easy to apply and penetrates deeply into the surface for a beautiful finish. You can safely use it on sanded, bare and stripped wood. 

It’s excellent with tight-grained woods and surfaces with interesting grains because it can penetrate deeply without hiding the patterns. 

It’s not quite maintenance-free because it doesn’t completely seal the wood. You’ll have to reapply it every so often to prevent the project from drying out. 

If you don’t want the color to get darker each time, I recommend a wax or a plain oil finish after the first round.

Watco Danish Oil

3. Formbys Low Gloss Tung Oil Finish - Top Finish Option for Wood

Tung Oil is another classic oil that protects the finish of the wood without hiding the natural grain. It resists both water and mildew and helps prevent chalking. It dries clear, so it's safe to use as a complement. You should use it only for interior projects.

Formby's low gloss option gives the wood a hand-rubbed finish without hightlighting imperfections. You can continue to condition your piece, working with the natural strength of the wood and finish.

The glossier the surface, the more you highlight any scratches or dings. It comes in various sizes so that you can choose the right one that fits your need.

Tung oil isn't as glossy, so it's perfect when you want a satiny finish, or if the wood has a lot of imperfections.

  • Low gloss option is better for surfaces with multiple imperfections
  • Complements an existing finish
  • Water and Cons
  • Not recommended for floors
  • Only for interior use

Formby's Tung Oil Finish

4. Minwax Tung Oil Finish - Good Interior Oil for Reconditioning  

Minwax Tung Oil is perfect for pieces that are already finished and need reconditioning. It penetrates the wood deeply to prevent chalking and cracking. It’s water and mildew resistant and helps neutralize any acidity or alkalinity. 

Tung oil is easier to refinish than varnish, so it’s suitable for pieces you may want to rejuvenate after some time or that you might want to change later.

It's not pure Tung oil, but you should have a better result with the added solvent and varnish without having to refinish a piece completely. It dries more quickly than pure, classic tung oil so you can get layers without as much wait time.

It uses a solvent, so make sure you have plenty of ventilation. This option helps to recondition the indoor wood completely, but you don't want to use it near any food prep areas.

  • Penetrates wood deeply to condition
  • Water and mildew resistant
  • Easier to refinish later than pure varnish
  • More durable than pure Tung Oil


  • Not safe for food prep areas
  • Not 100% Tung Oil
  • Solvent requires ventilation
  • Not suitable for exterior use

Mixwax Tung Oil Finish​​​​​​​

5. Tried and True - Ideal Product for Interior Use

Danish oil is pure linseed oil that’s been moderately polymerized. It’s economical and produces a nice finish to your wood. It has better penetration than boiled one, but it may take longer to finish.

There's no varnish and no other additives. It conditions the surface, bringing out the natural grain and complementing the finish.

You may have to reapply it periodically to prevent drying. It doesn't have a colour, and there's no gloss. The sheen is suitable for wood with some imperfections. This option conditions and enhances the grain.

It doesn't have a toxic aroma like other finishes. It's safe to use indoors and on food prep areas.

It does have a faint cooking oil smell that some might find off-putting, but it fades after a while. This option doesn't protect wood well, beyond just making sure there's no cracking associated with drying out, but for indoor furniture and wood pieces, it's beautiful.

  • Suitable for indoor pieces
  • No harsh, toxic smell and no VOC
  • Ideal for food preparation areas
  • Suitable for surfaces with some imperfection


  • Smells like cooking oil
  • Won't protect against damage

Tried _ True Danish Oil Finish

6. OSMO Topoil - Food Grade Oil for Wood

Osmo’s Top is an oil and wax mixture best suited for things like furniture and food prep surfaces. It conditions the wood, bringing back the shine. It’s water-repellant. You can protect your food prep areas against staining agents like wine or things with a strong smell.

It's clear and dries with a satin finish. It resists scratching and helps you clean dirt and grime off easier. You can keep conditioning your wood piece without having to remove the top oil coat and without sanding things down.

It's easy to use, and it doesn't ass any colour to your piece aside from deepening the colour slightly due to conditioning.

Osmo TopOil​​​​​​​​​​​​​​