1" Backer Rod (25 ft section)
SKU bac1-25
$10.97
In stock
1
Product Details
Backer rod is important when sealing large gaps. It allows caulk to span a gap without ripping loose. In the example above backer rod is used where the radon pipe enters the floor before caulk is applied.
1" is fine for 3/4" to 1-1/8" gaps.
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