correct way to trim a window

elizawhyzaNovember 23, 2012

Our contractor trimmed a couple of windows as shown in the attached picture. My husband and I looked at them and to our eye, we should not be seeing the "frame" that we believe is part of the window mechanics. Would love to see what others think.

Thank you for reporting this comment. Undo
kirkhall

I can see that part (I think) in all my windows.
Is it the part that the sliding portion of your window slides into?

    Bookmark   November 23, 2012 at 4:55PM
Thank you for reporting this comment. Undo
elizawhyza

Yes, it is the part that the sash goes into. I guess it is just a new way of trimming, but in older windows, the stool is flush with that piece, not below it.

    Bookmark   November 23, 2012 at 5:19PM
Thank you for reporting this comment. Undo
LuAnn_in_PA

Is that a replacement window or original to the house?

NONE of my replacement windows go to the windowsill.

    Bookmark   November 23, 2012 at 5:42PM
Thank you for reporting this comment. Undo
elizawhyza

They are new windows, but not just replacement sash. They are part of a complete remodel, all windows replaced, rooms reconfigured, etc. We had a few windows replaced a couple of years ago and the were flush, so I think it has to do with the way they were ordered.

    Bookmark   November 23, 2012 at 7:43PM
Thank you for reporting this comment. Undo
elizawhyza

They are new windows, but not just replacement sash. They are part of a complete remodel, all windows replaced, rooms reconfigured, etc. We had a few windows replaced a couple of years ago and the were flush, so I think it has to do with the way they were ordered.

    Bookmark   November 23, 2012 at 7:44PM
Thank you for reporting this comment. Undo
kirkhall

That is the way all mine have been installed--replacement and new construction--in the last 7 years.

    Bookmark   November 23, 2012 at 9:04PM
Thank you for reporting this comment. Undo
renovator8

A window "sill" is the bottom part of the window's frame and is only seen from the outside. The horizontal shelf-like trim added to the inside is called a "stool".

A traditional window stool has a notch in it that engages the back edge of the sill and rests against the window sash providing better resistance to wind driven rain.

Many modern "nail-fin" windows already have an upturn at the back edge of the sill. These windows often have a groove into which the tongue of a stool trim fits.

If you want a more traditional looking stool it is possible to use a stool without a tongue and raise it higher. This works better on some windows than others.

The lesson to learn is to never approve a window selection without seeing it in a showroom or looking at the cross-section detail of the sill/stool assembly.

This is a traditional window:

This is an Andersen window:

    Bookmark   November 23, 2012 at 10:44PM
Thank you for reporting this comment. Undo
worthy

Here's a pic from the Journal of Light Construction.

    Bookmark   November 23, 2012 at 10:51PM
Thank you for reporting this comment. Undo
renovator8

The stool installation depends largely on the design of the back edge of the window sill although it is often possible to make a special profile stool trim to fit many of the windows that have an integral raised waterstop at the back of the sill. However, it is usually necessary to tell the carpenter that you are willing to pay for that extra work.

I have linked to a video of the installation of a traditional window stool.

Here is a link that might be useful: window trim video

    Bookmark   November 23, 2012 at 11:13PM
Sign Up to comment
More Discussions
Question about screen porch
First, I'm ONLY thinking about the porch right now....
mrspete
Interior Doors - any experience with this company?
Does anyone have any experience with solidhardwooddoors.com...
numbersjunkie
Induction cooktops.... Do you have one?
I am doing research on what is out there as far as...
blandinababes
Purchasing Items during build?
For those who have gone through the building process...
njbuilding143
Floor Plan Review
Can anyone give some feedback on our floor plan? I...
kymberie
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™