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