Ships nationwide (except CA) Talk to a real log home pro: 1‑800‑426‑1002 Family-owned · Wisconsin-built
HomeStain, Caulk & SealantsPreservatives & Insecticides

Cobra™ Rods - Preservative Borate Rods - 1/2" x 2"

From $22.80
Add to cart on LogHomeMart.com →
Not sure it's the right one? Call a log home pro — sizing questions answered in minutes.

Details

Add up to 15 years of life to your wood!

 

Features:

  • Targeted: Great for rot prone areas.
  • Longevity: Adds years of life to our pine posts when properly installed.
  • Versatility: Perfect for any wood post in an exterior application.
  • Protection: Combines boron and copper for superior protection.
  • Ease of Use: Easy to install and maintain.
  • Trusted: With studies from 6 different internationally recognized research institutes to back it, you can trust the power of the Cobra™ Rod. 

Available Options:

  • Cobra Rods: 1/2" x 2"
    • Case of 50
    • Case of 50 with 50ct 9/16" x 1-5/8" Plugs
    • Case of 100
    • Case of 100 with 100ct 9/16" x 1-5/8" Plugs
  • Cobra Plugs: 9/16" x 1-5/8"
    • Case of 50
    • Case of 100

Borate Rods:

  • This treatment is water-soluble and protects wood against decay, fungi, and certain bugs. The Cobra Rod acts as a plug, as you can essentially drill a hole into the piece of wood, stick the rod into it, and close it up with caulk.
  • Cobra™ Rods are a way to spot treat decay-prone areas such as log ends that are already coated with a finish.
  • Once inserted into damp or wet wood, the borate/copper complex in Cobra Rods dissolves spreading the active ingredients into areas surrounding the rod.  This eliminates active decay fungi and helps prevent rot for 8 to 10 years.
  • Cobra Rods are 7/16" in diameter and are two inches in length.  A 1/2" diameter drill bit is used for installation.  The installation holes may be plugged with the accompanying plastic plugs (if available) or wood caulk.
  • A typical six to eight-inch round log end will require two 2” long Cobra Rods inserted within 4 inches of the butt end.

 

Use a ½” drill bit to drill hole. 

Drill hole to a depth of at least 3 ¾”. 

Clean out the hole and insert the Cobra Rod. 

Insert the plastic plug into the hole.

Using a screwdriver, twist the plug clockwise.

Make sure the top of the plug sets about ¼” below the surface of the wood.

Fill the hole with the appropriately colored wood caulk.

Smooth with tool or finger.

 

Resources:

More in Preservatives & Insecticides

Goes well with this

Free download

The Log Home Maintenance Calendar

When to stain, when to re-caulk, what to inspect each season — one page, on your fridge, no guesswork. Plus occasional deals. No spam, ever.

📞 Talk to a Log Home Pro