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I had a contractor come install 4 of these windows for me.

He’s an older guy who I believe just does this to keep busy post retirement. The labor costs were very cheap.

When I went upstairs afterwards to look at the windows I immediately noticed what looks to me like a big problem with them.

So essentially these new windows are inserted into the old ones. However they aren’t the same thickness and there’s a gap between the front of the new window and the front of the old one.

Wouldn’t this gap just fill with water and run down my walls eventually and rot out? I can see pink insulation in the gap and it’s seemingly just exposed to the elements.

Thank youenter image description here

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    I'm not an expert, but if you can see insulation, then yes, that's a problem.
    – FreeMan
    Sep 18 at 21:53
  • Did he address any of this in the estimate?
    – JACK
    Sep 18 at 22:48
  • Do you have unusually thick walls? Are they unusually thin replacement windows? A little wider shot showing the whole window frame & trim on one side would be helpful.
    – FreeMan
    Sep 19 at 0:43
  • @JACK none of the specifics were mentioned. Like I said he’s an older retired guy. He gave me a price, had me order through his supplier, then he came and installed them.
    – Mat
    Sep 19 at 6:08
  • @FreeMan they’re not unusually thick walls. These windows seem to just be slide-in inserts, I believe. But they’re definitely too “thin” so the old frame part of the window is still there. This whole thing seems very off.
    – Mat
    Sep 19 at 6:08
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Yes, that should have been flashed first. Definitely call him back. Hope you didn't pay him the final.

EDIT: flashing is usually thin formed aluminum sheet metal used to divert water flow. One would want to divert water away from the framing and over the siding.

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    A little more meat could make this a good answer. Help the OP out and explain what "flashed" means. TBH, though, this requires more than just some flashing.
    – FreeMan
    Sep 19 at 0:44
  • Thank you. The whole thing took about 2-3 hours. I paid cash (very cheap price). I’ll call him up, but it seems like it may be a you get what you pay for situation
    – Mat
    Sep 19 at 6:09
  • They should be using a sticky, rubbery membrane material (think a gasket layer) before laying down any house wrap or aluminum sills.
    – TylerH
    Sep 20 at 21:05
  • Yeah we use that a lot. Peel and stick comes on a roll.
    – DrSparks
    Sep 20 at 22:26

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