Preparing For A Denver Window Company It’s a date! You’ve met with our amazing experts, planned out what windows you want and you are chomping at the bit to get those new fancy windows installed. Before your trusted Denver window company can come and install your windows, there a few things to keep in mind to make the process easier. 1)Time it out The old adage: “timing is everything” is especially true with window installation. You may want windows installed before your big party, but if it’s going to be rainy or snowy the week before, you may want to.