Doors and Windows - Cinder block & replacement window
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kspeeks
12-01-05, 05:08 PM
Can anybody give me advise on installing replacement windows in a cinderblock house. The current windows are jalous and were built into the cinderblock. I know these will basically need to be forced out. Any recommendations on the rest of the job will be greatly appreciated. One other thing to consider is that hopefully in the next two years I will be installing vinyl siding over the cinder block.
XSleeper
12-01-05, 05:22 PM
You can do one of two things:
1). Install a replacement window right into the cement opening, keeping the window back from the face of the wall at least 2" or more. You would want to make sure the bottom of the rough opening has a sloped cement cap what will extend just behind the window edge so that it will drain. The replacement window would need to be about 1/4" to 3/8" narrower than the opening, and the opening will need to be a consistant width, plumb and square. The edge of the window would get caulked and that would be your only protection against moisture infiltration. The window would need to be screwed to the masonary as directed, but with cement screws through the installation holes provided. Your interior trim would also need to be attached to the cement unless you have framed walls inside the cinderblock.
2). Install a treated 2x wood buck inside the cement rough opening, sealing behind each board before anchoring it in place. Then you could install a custom sized new construction window that comes with a nailing fin. Again, you would probably want to keep the window back 2" or more from the face of the wall, (keep the 2x wood buck back from the edge of the wall that amount) and have the sloped cement sill on the bottom so that it will drain. Then you would need to cover up the nailing fin around the perimeter of the window with a piece of trim. The 2x wood buck would provide you something to nail your extension jamb to, but unless the interior face of the woodbuck is covered with drywall, you would need some wide casing to trim such an opening.
1). Install a replacement window right into the cement opening, keeping the window back from the face of the wall at least 2" or more. You would want to make sure the bottom of the rough opening has a sloped cement cap what will extend just behind the window edge so that it will drain. The replacement window would need to be about 1/4" to 3/8" narrower than the opening, and the opening will need to be a consistant width, plumb and square. The edge of the window would get caulked and that would be your only protection against moisture infiltration. The window would need to be screwed to the masonary as directed, but with cement screws through the installation holes provided. Your interior trim would also need to be attached to the cement unless you have framed walls inside the cinderblock.
2). Install a treated 2x wood buck inside the cement rough opening, sealing behind each board before anchoring it in place. Then you could install a custom sized new construction window that comes with a nailing fin. Again, you would probably want to keep the window back 2" or more from the face of the wall, (keep the 2x wood buck back from the edge of the wall that amount) and have the sloped cement sill on the bottom so that it will drain. Then you would need to cover up the nailing fin around the perimeter of the window with a piece of trim. The 2x wood buck would provide you something to nail your extension jamb to, but unless the interior face of the woodbuck is covered with drywall, you would need some wide casing to trim such an opening.