Cover gap between sill and window frame

11 years ago

I am replacing old windows and when I put replacement in place I got a gap about 3/4 inch between sill and window frame. Please look at the picture. The replacement window is Andresen 200 series.

Should be a usual problem as sill is slanted, but somehow I could not find how to cover it. Any advice?

Thanks for your help!

Alex

Featured Answer

Alex Z
Original Author

11 years ago

last modified: 11 years ago

Thanks for your responses. I expected that it should be ready solution... Thanks to you I know the magic word: "sill expander". Will go to HD to find out why they did not mentioned this.

To HomeSealed Exteriors: this sill will be replace, it is a better part :-( Out of five windows one sill is a mess (this one) one is OK and there in perfect conditions,...

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Comments (6)

PRO
Windows on Washington Ltd
11 years ago
Do you have access to a metal brake or someone that can cap?

If not, some PVC ripped to fit should do the trick too.
Alex Z thanked Windows on Washington Ltd
PRO
HomeSealed Exteriors, LLC
11 years ago
A sill expander should have come with the window. It is designed for this very purpose. If not, professionals would generally clad that wood, and add a bend for the gap. What is your plan on dealing with the peeling woodwork? If you are just going to paint, add some type of wood to cover that would also work... Make sure to insulate in there as well ;)
Alex Z thanked HomeSealed Exteriors, LLC
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Alex Z
Original Author
11 years ago
I can deal with PVC board, but I expected something better :-)
bilwdavis
4 years ago
I've been looking for what "sill expander" trim is called all evening. Thanks
millworkman
4 years ago
last modified: 4 years ago
It is an adjustable piece that comes with new windows and is put on the frame below the window sill before installation. You will not be able to add one now from what I know.