Open Or Closed Cell Backer Rod

Closed cell when backer rod compared to the closed cell the open cell is much more flexible.

Open or closed cell backer rod.

The hybrid style backer rod is easy to install with the internal open cell structure it can compress easily. See gibb j f hidden but essential. For pricing and availability. Gray caulk backer rod for gaps and joints.

Crack flex concrete sealant m d building products 5 8 in. And abuse of these rods does not cause out gassing. Open cell backer rods may not be ideal for sealants that are susceptible to bubbling of air escaping the backer rod material. Meets all of the requirements of the 1990.

Nomaco ocfoam open cell backer rod round flexible continuous lengths of open cell polyurethane foam backer rod for use as a backing material for elastomeric and other cold applied sealants. Product data sheet. Closed cell backer rod sikaflex 10 1 oz. Open cell rods are more accepted since they essentially breathe.

Open cell backer rods. The open cell is dependent on its physical and chemical make up in order to attain its rigidity. Sika 0 75 in x 20 ft backer rod. Broadway denver co 80216 p.

The sealant also has the benefits of a 2 sided cure. Since the backer rod has a closed cell exterior it can be installed in horizontal or flat work because it won t wick moisture through itself. However closed cell rigidity is merely the result of the gases trapped inside the material. The open cell construction eliminates the out gassing and cold flow problem associated with closed cell polyethylene backer rods.

Backer rod is available in two basic forms. Bond breaker tape is used in joints that are too shallow to install a backer rod. Fillpro soft type is a unique bi cellular construction that offers high compressibility but has a closed cell outer skin to resist moisture.