Backer Rods
![](/prerenderstable/mvPRE/contents/gfx/imagecache/776/77605t422-@halfx_637189923614728273.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/776/77605t442-@halfx_637190010586653470.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/776/77605t422p2-4x1567690415-p9@halfx_637032699093139833.png?ver=imagenotfound)
Provide support for sealants in gaps—insert these backer rods into gaps and fill in with sealant.
Closed-cell backer rods restrict moisture from being absorbed. Use them with joints that have wide, even spaces. Cross-linked polyethylene backer rods can be used with tar, asphalt, cement, and other hot-pour sealants.