Grip Strip is a special type of backer rod with some unique features:

• Its trapezoid shape is great for wider chinking joints
• It’s closed cell to be water resistant – repels water to protect the joint from damage
• Like all bond breakers, saves you money – fills the joint so you use less caulk and chinking (which costs more than the Grip Strip)
• Fully compatible with all substrates and Sashco chinking and caulking products
  Grip Strip is available in a variety of sizes ranging from 3/4″ wide up to 2-1/2″ wide.

Grip Strip is trapezoidal-shaped, white closed-cell polyethylene foam material used between the rounds of log work in your chinked style home or in larger checks/cracks in logs that need to be filled. Chinking or caulking (for sealing checks) is used over this product. Product comes in 4′ lengths. Width is determined by the widest of the parallel faces.

Watch the Grip Strip how-to video below, featuring Sashco’s long-time friend Tracey Hansen. He touches on how to deal properly with difficult knots and other obstructions during installation, as well.