DRILLING A TILE
When you want to hang something on ceramic tiles you will need to drill a hole. Regular metal cutting twist bits will not cut through the hard ceramic face, and in fact the ceramic material itself will destroy such a bit. You need to use a bit that has a carbide head....
When hiring a contractor to replace your windows, DO NOT MEASURE THEM YOURSELF. You can give him measurements to the nearest inch with the very clear indications that these are "approximate measurements only and not to be used for ordering the window".
WHY HAVE A CONTRACTOR TAKE HIS OWN ...
There are many reasons why detailed planning is essential in renovation and construction. Good planning avoids a lot of changes as you go, and often changes are very disruptive if you have to go back and rebuild something already done. Good planning gives you a chance to see the whole picture, ...