Hi Connie,
You have condensation on your new windows. This is common with new windows that are air sealing your home better than the old ones. It also means you have humidity in the air in your home ... read more
If basement ceiling is unfinished or has drop ceiling you can usually run 1 1/4" screws from underneath. It is best to have a helper finding the squeaks and try to measure from the outside walls in o ... read more