I assigned a contractor to install a new window at basement. I bought the window 33x40 and material with the contractor in Home Depot. The contractor cut the wall and installed well.
Two days later I showed it to friends and found a lot water when i opened it and it was difficult to close. When e checked the window label i found "install vertically only".
In advance of starting, I said to position it horizontal since the Home Depot window associate said that the window can be horizontal or vertical.
Now, the contractor said that this is my responsibility, and he could come back to drill holes for drainage.
I am wondering if it's enough as a repair, and if it's a problem when to sell the house.