About Us  
Ask The Expert  
About Logs  
Contact Us  
Shop For Products
Stains & Finishes  
Chinking & Sealing  

Perma-Chink Catalog

Click here to order catalog...

Authorized Distributor for Perma-Chink Systems, Inc.
Shell-Guard Armor-Guard Cobra Rods

Shell-Guard/Shell-Guard RTU

A concentrated borate-based insecticide, fungicide and wood preservative for the protection of new and old log homes.


  • A preventative or remedial treatment
  • Contains no ethylene glycol
  • Deep penetrating
  • EPA-registered


Borate powder insecticide, fungicide and wood preservative.


  • A remedial or preventative treatment
  • EPA-registered

Cobra Rods

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 are available in either two or four inch lengths. A 1/2" diameter drill bit is used for installation. The installation holes may be plugged with the accompanying plastic plugs or Energy Seal.

A typical six to eight inch round log end will require one 4? long or two 2? long Cobra Rods inserted within 4 inches of the butt end.


  • Solid borate rods
  • Spot treat high risk areas
  • Easy to insert
  • Rods are ? by 2?
  • Come with plastic plugs
Copyright © 2017 Hess Log Home Supplies. All rights reserved.