Installing Window Trim in a Wrap-Around Style
Wrap-Around Style Window Trim provides a Clean and Minimalist Look
By: Mark J. Donovan
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There are two common methods for installing window trim. The first is known in
the finish carpentry trade as wrap-around style window trim installation. The
second method of installing window trim involves using window stool cap and an
apron along the bottom of the window sill. Described below I focus on providing
high level instructions for installing window trim in a wrap-around style.
Checking and/or Installing Window Extension Jambs
First, examine the window and make sure the window jambs extend flush with the
drywall surface.
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If they do not, you will need to install window extension jambs so that the
window jambs do extend flush with the drywall surface.
Once you have confirmed the proper window jamb depth, or have installed
extension widow jambs, you can then begin the actual process of installing the
wrap-around window trim.
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Installing Window Trim
Start by measuring the top inside edge of the window jambs, or window frame,
and add ¼” of an inch to this measurement. The extra ¼” will provide a 1/8”
reveal on each side of the window. The reveal is an aesthetic technique employed
by finished carpenters.
Next, using a miter saw cut one end of a piece of trim molding at a 45o angle. |
Now measure from the inside edge (shortest edge) of the piece of molding you
just cut, the same length you measured on the top of the window frame. Make a
small pencil mark on the far end of the molding on the inside edge.
Next, adjust your miter saw blade so that it cuts another 45o angle cut where
the mark you just made on the piece of molding is at the short end of the angled
cut.
Now place this piece of molding over the window frame so that it is
approximately 1/8” higher than the bottom inside edge of the window jamb.
This will enable a 1/8” reveal to show up on the top of the window trim, as well
as along the sides.
Use your level to make sure the trim molding piece is perfectly horizontal and
level. Use a couple of 6d or 8d finish nails to tack the molding in place. Do
not sink the nails.
Next repeat the process for the side trim pieces and again line them up and tack
them in place with a couple of nails on each end of the boards. Note that your
vertical measurements should be made from the bottom inside edges of the
installed trim molding piece to 1/8” below the bottom of the inside edge of the
window frame. Again, this is to achieve a 1/8” reveal along the bottom of the
window frame.
Now repeat the process for the bottom trim molding piece,
measuring the distance between the inside edges of the two vertical trim
molding pieces.
Once you have cut the bottom molding piece, place it in position underneath
the two vertical trim pieces and make sure the mitered seams line up. If
they do not line up, adjust the placement of the side moldings accordingly
by pulling out the tacked nails and shifting the trim pieces as necessary. |
Photo By Mark Donovan |
Once the pieces are square, tack the side pieces back in and then the bottom
piece.
Finally sink the finished nails into the window trim molding using a hammer and
nail punch. In addition, install additional nails on both the inside and outside
edges near the corners of each trim piece. Also install additional nails ever 12
to 16” along the length of the trim pieces, both on the inside and outside
edges.
Note: you may want to touch up the cut window trim edges with stain or paint
prior to nailing them up to the window frame.
See the
Installing Interior Window Ebook
from HomeAdditionPlus.com.
The Installing Interior Window Trim Ebook provides easy to understand,
step-by-step instructions, on how to install interior window trim around a
window. Pictures are included for every key step in the process.
For more information on
Installing a New Window, see the
Installing a New Window Ebook from
HomeAdditionPlus.com. The Installing a New Window Ebook provides
easy to understand, step-by-step instructions, on how to remove an old window
and install a new one. Pictures are included for every key step in the process.
Additional Finish Carpentry Resources
Finish Carpentry
Tools from Amazon.com
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