SSIS Expression Use Cases. Control Flow. Variable values can be derived from other variables using expressions. Precedence constraints can make use of expressions to validate a condition. SSIS Tasks and Containers can also make use of expressions to set a property at run time.
1 The labor cost to install a coffered ceiling is usually around $8 to $15 per square foot, while material prices may range from $5 to $19 per square foot, depending on the type of material you use. 2  To get an exact quote for your professional job, consider using free website quote engines such as HomeAdvisor.com.
However, understand this project is tedious and also very messy. After the popcorn is gone, you will need to apply drywall mud over the ceiling and sand it flat. Hanging new drywall over the ceiling to create a clean and smooth surface can cost between $160 and $200 for a 12-by-12-foot room. If you choose to DIY, these steps require more materials and additional cost.