How to Preserve Rough Sawn Pine


Rough sawn pine is used for fencing, siding, window casings and architectural trim aesthetics. It is characterized by an almost fuzzy surface that cannot be sanded, invoking the old-west with an attractive rugged appearance. Rough sawn pine should never be painted; paint detracts from the natural look of the pine. Penetrating oil should be used to preserve the beauty and protect the wood against moisture penetration. Linseed oil is affordable and easy to apply with a small air gun.

Things You'll Need

  • Linseed oil
  • 1-quart pressure pot spray gun
  • Fill the 1-quart paint canister with linseed oil and screw the gun back on top.

  • Hold the gun 8 inches from the surface of the pine. Spray a heavy pattern of oil directly onto the surface of the wood. Spray a band of oil along the surface of the wood, moving parallel to the grain of the wood.

  • Spray another band of oil overlapping the first band by 1 inch. Continue overlapping bands of oil until the surface of the pine is completely wet with oil. Spray all exposed edges and sides. Wait one hour.

  • Spray another coat of oil on the wood, overlapping bands just as you previously did.

  • Spray another coat of oil onto the pine once every six months to maintain protection.

Tips & Warnings

  • Linseed oil can be used for indoor or outdoor applications. If it is too thick to spray effectively with your gun, you can thin the linseed oil with lacquer thinner. Use one part thinner to three parts oil.
  • Even though linseed oil is nontoxic, wear breathing and eye protection. Spread a drop cloth if using inside.

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