Doors and Windows - replacement window measuring

I have old awning windows that id like to replace. I am looking into using PGT windows and was wondering where i should measure from. I have a concrete block house and two of the windows have to have 2 windows in the opening because they are too wide.

Replacement windows or replacing windows, big difference. Replacement windows use the existing frames; when you replace windows, the frame and all is removed. Big difference in labor, some difference in the window. Consider replacement windows if the frames are solid, no rot.

I will be replacing the frame and window with a more modern style.

On a concrete opening that has wood framing around the perimeter, I like to plan for the type of exterior trim the window will have, and then order the window accordingly. For instance, 908 brickmould is a common profile used around windows, that is 2" wide. If you plan to use brickmould to cover the nailing flange, you'd want to measure your cement opening on the exterior, and then subtract roughly 4 1/4" each way for an exact window measurement. This is assuming the rough opening is fairly square and not out of level or plumb. It would allow just enough room for the trim if the window is centered in the opening.

Sometimes in a masonry opening, you won't even use the nailing flange because there is no wood framing for the nailing fin to nail to. In that case, the window would need to be 1/4" smaller than the exact opening size, and it would get shimmed and screwed through the frame into the masonry opening, then sealed on the exterior with a high quality urethane/polyurethane sealant.

Not sure which type of opening you have, but perhaps you can figure it out, based on the above.

Hello guys


I hope this is right place to asking this question..

I am planning some changes in the house. Like putting aluminium window replacing woods. But some one gave this option of replacing with irons. So now I am pretty confuse on that one. I have seen both type of windows and they are preety good to me. Just have any one got any suggestions.

Thanks for your time

Where are you located?? Neither window you mention is very good on energy efficiency if you are in a cold climate, and steel requires a lot of maintenance.