23 Feb 2008 11:33:29 | Mike Merisko
Installing Windows in New Construction
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 spect 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.
(C) 2005 Mike Merisko www.sawkerfs.com
About the author:
About 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
