Backer Rod
Backer Rod is used for Chinking joints greater than 1/4". Backer Rod is a round, flexible length of extruded polyethylene (it looks like a rope made of foam). Backer Rod is used to create a surface backing for the chinking. At the same time, it insulates and saves on the amount of chinking material used. But most important, Backer Rod acts as a bond breaker allowing the chinking to adhere only to the top and bottom of the logs, not to the backer rod. This allows the chinking to flex naturally as the logs shrink, instead of peeling away.

Backer Rod Notes: Spray adhesives may be needed when installing Tri-Rod and Closed Cell Backer Rod.
Subject to UPS oversize charges based on size, not weight.
Grip Strip, Tri-Rod, and 6' lengths and cases of Closed Cell and Sof Rod backer rod are subject to UPS oversize charges based on size, not weight.


 FYI Backer Rod and Chinking Part 1 and 2
 Commonly Asked Questions Chinking, Caulking, and Sealants
Closed Cell Backer RodClosed Cell Will not hold, but actually repels moisture. In some cases, it will give a little higher insulation value. Closed Cell provides a firm finished joint because it is a stiff material. Has a wide assortment of sizes 1/4" to 4" in diameter. Works well for caulking jobs that requiresSubject to UPS oversize charges based on size, not weight. a smaller backer rod, such as 1/4" to 3/8". In some uses this product will need to be attached in place, using spray adhesives.
Closed Cell Backer Rod Pricing

Tri-Rod profile

Tri-Rod A triangular shaped, closed cell backer rod. Available in 6' lengths. Repels moisture.

Subject to UPS oversize charges based on size, not weight.



Tri Rod Backer Rod Pricing

Spray Adhesive

Fast Tack 87 A high performance mist adhesive used for temporary and permanent bonding. Its quick, initial tack and high solids make it perfect for many foams. Non-staining formulaGround Only makes it suitable for many applications. This product contains no chlorinated solvents. 13 oz. can T077-990221 $9.05

Touch 'n Seal Foam Sealant™
Polyurethane expanding foam sealant provides airtight insulation, fits into hard-to-reach openings, reduces heating and cooling costs. 24 oz. can - 2,400 linear feet of 1/4" diameter bead.
24 oz. High Yield T077-4004521224 $16.24

This product is also available for foam guns to eliminate loss of material and for easier application.

High Yield Gun Foam in 24 oz.
T077-63802 $18.35

Economy D Model Foam Gun
T038-4004510605 $30.25

Touch N Pro Premium Gun (previously known as the Sharpshooter X Foam Gun) contractor model.
T077-590609 $56.46

Poly-Clean 12 oz. can for cleaning foam guns.
T077-4006001240 $12.07
Open Cell Backer RodOpen Cell Easy to install (softer, more pliable than closed cell). Will compress more to fit a wider range of joint sizes and allows for faster cure of caulk and chinking. Recommended for indoor applications only. Will not cause outgassing, which can cause blisters; if the caulking or chinking sealant is punctured, closed cell can absorb moister.
Open Cell Backer Rod Pricing


Sof Rod Backer RodSOF® ROD (was Dual Rod) is an open cell, polyethylene foam that is extruded to leave an impermeable shell that prevents moisture from entering the side. Advantages of this backer are that it is very flexible and is easy to install. Smaller sizes are offered to fit those really tight joints. When choosing a size, the diameter should be approximately 25% larger than the joint because of the compressibility. Do not puncture or stretch during application. This may cause out-gassing, which can cause blisters to form in the chinking material. In smaller joints a blunt tool may be needed to pushSubject to UPS oversize charges based on size, not weight. backer further into the joint to allow the required amount of chinking. SOF® ROD is the easiest type of backer rod to work with for smaller size joints.

Sof Rod (Dual Rod) Pricing Chart


Grip Strip profileGrip Strip A closed cell trapezoid shaped product which, under normal use will not cause blisters in chinking material. Unique design provides excellent fit with a flat Grip Strip shown in logssurface within chink joint, resulting in saving on chinking. Can be used on exterior or interior surfaces. Subject to UPS oversize charges based on size, not weight.Comes in 4' lengths. Repels moisture.
Grip Strip Backer Rod Pricing
To Place an Order: Call Toll Free
1-800-359-6614
Prices subject to change without prior notice.