Tim-Bor Professional Insecticide

Surface Preparation
• Wood surface must be bare: free of dirt, wax, mill glaze and surface finishes.
• Remove all previous coatings by media blasting, sanding, chemical stripping and/or power washing. Surface discoloration from mold or mildew should be treated with Sashco’s CPR Log Cleaner & Brightener before applying Tim-bor.
• Do not apply to frozen wood. Log (not air) temperature must be between 40̊ F and 90̊ F. It is best to apply Tim-bor to dry wood.

Mixing Tim-bor:
• Mix at the rate of one pound, or loosely packed quart, to one gallon of water. The Tim-bor mixture requires only mild stirring before application. The mixture will be clear and water thin. With this mixture, all application methods described herein will yield a minimum retention level of 0.24 pounds per cubic foot boric acid equivalent to 1/2”.

Applying Tim-bor
1. Mix Tim-bor at a rate of 1-pound (1 loosely packed quart) to 1-gallon of water.
2. Wood must be clean and bare; free of dirt, wax, mill glaze and surface finishes, and wood surface temperature above 40̊ F.
3. Apply Tim-bor at the rate of 1 mixed gallon per 150 sq. ft of wood surface. Apply a second coat 4 to 24 hours later. Thoroughly soak cut ends, checks and cracks.
4. Coat the logs with a water-repellent finish after the Tim-bor solution has thoroughly dried. Use a moisture meter to verify that the log’s moisture content doesn’t exceed 19%.
Please Note: Treated wood must be protected from direct contact with moisture or the active ingredient may leach out. It’s best to wait at least 48 hours (in warm, dry weather; longer in cool, humid weather) after applying Tim-bor to coat wood with a water-repellent finish. Let the surface thoroughly dry and brush away any crystals that appear before staining. Use a moisture meter to verify that the logs’ moisture content doesn’t exceed 19%.

Brushing or Spraying:
• Apply Tim-bor at a rate of 1 mixed gallon per 150 sq. ft of wood surface. Apply a second coat 4 to 24 hours later. Thoroughly soak cut ends and apply to checks and cracks.

Kerf-Flooding, Hole Flooding, and Spraying/ Brushing:
• Logs 9” in diameter and larger are often kerfed to control unwanted checking.
• When kerfing a log in the shape of a trough (with 3/8” wide chain saw to a depth of 3”), simply pour the Tim-bor solution into the kerf. Fill the kerf at a rate of 15 to 20 lineal feet per mixed gallon. Let soak. It will take 1 to 2 days for the logs to absorb all the liquid. Protection may also be gained by pouring powdered Tim-bor into the kerf (0.2 to 0.3 pounds per lineal foot).
• Pour water into the kerf to dissolve and carry the Tim-bor into the wood. Brush or spray the exterior of the logs with more Tim-bor after either of these methods as described above.

Dipping:
• Dip logs or lumber in Tim-bor for 6 to 10 minutes, depending on log diameter. Let excess liquid drain back into the tank, dip again 24 hours later. Cover wood with a tarp or place in a shed for at least 48 hours prior to coating with a good exterior finish.