Please Note: We try very hard to present accurate product images, but product changes occur constantly. All images should be considered approximations. If a particular product feature, color or characteristic is especially important, please call us to verify that information before placing your order. Thank you.

Backer Rod Insulater (Sizes)


  • Pre-caulking material
  • Fills large gaps & openings, such as expansion joints
  • Use with all types of caulks & sealants
  • Helps repel moisture
  • Saves money by using less caulk recommended for joints and gaps over 1/2 In x 1/2 In
  • Shapes caulk bead for proper performance
Product SKU/Mfr Part # Selling Unit Qty Avail/Qty On-order Price Order
Backer Rod Insulater, 3/8 In X 20 Ft
100501
272531
EA 15/0In Stock
1- 11
$4.290
12-71
$3.861
72+
$3.647
+ list
Backer Rod Insulator, 1/2 In X 20 Ft
100497
8105611
EA 2/0In Stock
1- 11
$4.290
12-71
$3.861
72+
$3.647
+ list
Backer Rod Insulator, 5/8 In X 20 Ft
100499
272558
EA 12/0In Stock
1- 11
$5.490
12-71
$4.941
72+
$4.667
+ list
Backer Rod Insulator, 3/4 In X 20 Ft
100503
3519295
EA 16/0In Stock
1- 11
$8.990
12-71
$8.091
72+
$7.642
+ list