What is a common application environment for sealant backers?

Sealant backers are commonly used in exterior building joints and facades because they serve a critical function in joint design. They provide a backing for sealants, ensuring that the sealant is applied at the correct depth and allowing for proper joint movement.

In exterior applications, the backer helps to control the amount of sealant used, reduces the likelihood of the sealant adhering to the bottom of the joint, and enables the sealant to perform effectively under various weather conditions. This is especially important in facades, which are exposed to environmental stresses such as moisture, temperature fluctuations, and UV light.

By properly utilizing sealant backers in exterior joints, contractors can enhance the durability and performance of the sealants used, which contributes to the overall structural integrity and aesthetic quality of the building. This is why exterior building joints and facades are a fitting context for the use of sealant backers.