The window installation crew started today and I have some major concerns that I was hoping experienced users here could help me understand. The installers are not the commercial crew we paid for, but service crew for the distributing company, which was the first red flag. They installed the first window and I had to tell them to stop because of my concerns.
These are thermally broken aluminum windows. First, they did not install the sill pan, they said the top flange screws would not hit the header (the rough opening is exactly 1/2″ larger all around as in the instructions). Second, the nail fin is screwed right onto the outside wall – not shimmed out to allow for any type of drainage. Third, they said they fill the space under the window full with open cell foam – same concern. Fourth, the blocks they used underneath are small pieces of regular plywood – will this not rot in the moisture under the sill. Last, they said they will need to unglaze most of the windows as they are too large and heavy for them to install and there is no equipment that can help them(most windows are 6×8). Why destroy a perfect factory assembly???
Please help me understand what is going on here and if these concerns are valid. This is my family’s one and only home and we are striving to make it as perfect as possible, rather than cut corners that will cost us in the end. Thank you so much.
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