Open Or Closed Cell Backer Rod

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.

Open or closed cell backer rod.

The open cell is dependent on its physical and chemical make up in order to attain its rigidity. 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. Broadway denver co 80216 p.

See gibb j f hidden but essential. Open cell backer rods may not be ideal for sealants that are susceptible to bubbling of air escaping the backer rod material. Open cell rods are more accepted since they essentially breathe. Backer rod is available in two basic forms.

The open cell construction eliminates the out gassing and cold flow problem associated with closed cell polyethylene backer rods. And abuse of these rods does not cause out gassing. Crack flex concrete sealant m d building products 5 8 in. Open cell backer rods.

Fillpro soft type is a unique bi cellular construction that offers high compressibility but has a closed cell outer skin to resist moisture. The hybrid style backer rod is easy to install with the internal open cell structure it can compress easily. Closed cell backer rod sikaflex 10 1 oz. Bond breaker tape is used in joints that are too shallow to install a backer rod.

Select a denver foam size large enough to absorb the pressure during sealant tooling. For joints susceptible to the presence of moisture prior to joint sealing such as horizontal joints. Meets all of the requirements of the 1990. For pricing and availability.

Gray caulk backer rod for gaps and joints. Closed cell when backer rod compared to the closed cell the open cell is much more flexible. Sika 0 75 in x 20 ft backer rod.