Installing a window in a freshly framed opening is one of the more simple
tasks in a construction project.
Most new construction windows have what is called a nailing fin. These are
found on vinyl or aluminum clad windows. This nailing fin is either vinyl or
metal and has nail holes every 4 to 6 inches and about 1 and 1/2 inches wide.
Nailing fins take the place of brick moulding which can still be found on primed
wooden windows.
Not only do these fins make installation easier, but also make a better seal
against water and air infiltration. These windows can be flashed if desired but
not deemed necessary. A window that does not have the benefit of a soffit or
porch roof above it may need flashing or a drip edge above it.
When getting ready to install a window, make sure the sheathing is not
hanging into the rough opening. This could cut down the size of the opening and
not let the window go into the opening.
Once this is done, measure the rough
opening to make sure the it is big enough for the window. You don't want to lift
a heavy window to an opening only to find it won't fit. Rough openings are
usually 1" wider and 1/2" taller than the window unit. Rough openings are spec'd
and provided by the window manufacturer.
Depending on the size of the window, you'll need 2 or 3 people to install a
window. One or two outside and one inside.
Once you know the window fits, lift it to the opening from the outside. Set
it on the sill and push it into the opening until the nail fins hit the wall.
Make sure none of the fins folded themselves back into the opening
especially the bottom one. The person on the inside then centers the window in
the opening. Then using a level, checks it for plumb and level, and applies
shims where needed. You may also want to check the window for square, although a
window that's closed and in the locked position usually is. The window can now
be nailed in. My preference is roofing nails but 8d nails or cap nails will do
the job.
If it is a standard jamb (4 9/16) another thing to check is how far it runs
past the rough framing. This should be 1/2 inch. You'll also want to make sure
the window operates properly. Double hungs should slide up and down easily and
casements should crank in and out without hanging up.
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(C) 2005 Mike Merisko
www.sawkerfs.com
About the Author: Mike Merisko has been a carpenter for
26 years. Most of those years were spent in the homebuilding and remodeling
industries. He was also in business as a carpentry and general contractor. While
that is his forte, he also has experience in bridge building, commercial
construction, and exhibit building which is how he earns his living these days.
You can browse through articles by him and others at his website
www.sawkerfs.com
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.
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