“Need help with window installation issues?”
Asked by Hilla Takala 
6 months ago
Last Updated: June 4, 2024
Got any questions about fixing window installations?
Everything sounds good! If you’re using metal flashing at the top, I recommend cutting the house wrap and installing it behind it. If you’re only using tape, keep the house wrap as it is.
Great! I’ve got a total of 9 windows and only these two had leaks during the recent rainstorm. I’ll start putting up the siding as soon as possible. Should I apply the flashing tape to all of them right away or just focus on these two that leaked first, and then do the rest as I work on them with j-trim for the siding?
All of them for sure. And make sure not to skimp on quality either. You can never have too much. It’s best to go overboard at this point rather than deal with a leak later on.
Oh yeah, that’s exactly what I was thinking as well. I’m really frustrated that the professional didn’t install the flashing membrane! It’s even specified on the window installation sticker and the cabin drawings! I can’t believe it…the amount of poor workmanship I keep discovering is unbelievable! I’m thankful that I took charge after the framing was completed. He’s just not competent!
Oh yeah! I deal with issues like this quite frequently. It almost always boils down to shoddy workmanship or steps being skipped by the original installer
Seal the edges of the opening with silicone, then put in the window and secure it with tape on all nail flanges. Start from the bottom, then do the sides, and finish across the top.
I’ve moved past that stage now. I’m planning to apply the flashing membrane first over the nail flanges before putting on the siding.
I once saw a person using a similar product to building tape called tuck tape. It’s commonly used for sealing nail flanges on windows and doors, as well as joining building wrap. Pretty interesting, huh?
Used Tuck tape, which didn’t seal well because he did a poor job. And you’re supposed to use flashing membrane on the sill plate before installing a window, but he skipped that step.
Yeah, he did a terrible job, that’s unfortunate. I hope you are able to get everything sorted out. Good luck! I have never experienced any leaks in the windows or doors I have been installing for the last 35 years.
Give him a call back
No way, I don’t want him anywhere near my project. I’ll have to fix all the other mistakes he made.
There seems to be something missing in this story. Best of luck, it seems like you are on the right track.
What else could it be? He simply didn’t install them properly.
Do you really think the inspector won’t ask you to remove the windows and flash them correctly?
Already gave his approval for all of this, can you believe it? 😜