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What is a Concrete Expansion Joint and Why Does it Matter? - Foundation Repair - Permanent Solutions to Your Problems | Thrasher | News and Events for Thrasher Foundation Repair
![flooring - Do I need to "fill in" concrete control joints before floating floor installation? - Home Improvement Stack Exchange flooring - Do I need to "fill in" concrete control joints before floating floor installation? - Home Improvement Stack Exchange](https://i.stack.imgur.com/PyCTl.jpg****)
flooring - Do I need to "fill in" concrete control joints before floating floor installation? - Home Improvement Stack Exchange
![Reflectix 0.5-in x 4-in x 50-ft Polyolefin Concrete Expansion Joints in the Concrete Expansion Joints department at Lowes.com Reflectix 0.5-in x 4-in x 50-ft Polyolefin Concrete Expansion Joints in the Concrete Expansion Joints department at Lowes.com](https://mobileimages.lowes.com/productimages/8a9d364e-59bc-4a3b-a79d-576f8720361a/04942905.jpg)