A product commonly found at a large home improvement retailer is designed to accommodate movement in structures. These products are gaps intentionally built into surfaces like sidewalks, driveways, and walls to prevent cracking or buckling caused by thermal expansion and contraction of materials due to temperature changes. They provide a space for the materials to expand without putting stress on the surrounding structure.
The implementation of such products is crucial for maintaining the integrity and longevity of various constructions. Ignoring expansion could lead to costly repairs. Historically, builders understood this need, using various methods to allow for movement. Modern versions, available at retail outlets, are often made of flexible materials like rubber, foam, or metal, designed for ease of installation and effectiveness.