Measuring for replacement windows?

I'd call a window manufacturer to make sure you get the right measurements and ask all your questions before falling through. Hope this helps. Roxanne

in most old houses, the window casing from the outside would allow you to install your replacement windows right into the existing hole. Similar to storm windows installed by government agencies for aging. Simply measure the inside dimentions across and verticle. The window should be made 1/2 to 1 inch smaller to allow for plumbing and leveling. The problem with this is that custom windows are usally much more expensive. You might consider having an actual window company come out and look or bid the job. Sometimes its really the cheaper way. Hope this helps a little.

The sashes (the part on the window that slides up and down) sit in a pocket at the sides of the windows. To measure the width, take your measurement in that pocket. You should take three measurements, one at the top of the window, one in the middle and one at the bottom. Use the smallest of the three measurements.

For the height, measure in the pocket (at the top where the sash slides up into) down to where the bottom sash sits when closed. Again, take three measurement, one at both sides and one in the center. Use the smallest measurement. The last measurement you will need is the width of the pocket. Measure between the outside stop and the inside stop. Most windows need at least 3-1/4".

Deduct 3/8" from the width and 1/4" from the height of the smallest measurements you take to get your actual window size.

I highly caution you to do this on your own unless you have some experience. There are some additional items that can come into play in making sure the new windows fit properly.

These measurements can get you close enough for estimating purposes; however, most window companies will come and measure for free. If you order the windows based on your measurements and they do not fit, you are stuck with them. If the window company measures and they do not fit, they will be responsible.

If it doesn't cost anything to let the window company measure, I would let them do it!

Replacement windows are a tough installation challenge that usually require the expertise of an experienced contractor. I think you keep the existing sill but you do remove the window casing. Get someone to look at your windows to really know for sure.

If you want to save money and your existing windows can be painted and patched up, consider interior storm windows. They are mounted on the inside, are removable and insulate the window better than new double glazed replacement windows.

Search for magnetic windows or interior storm windows.

normaly for replacement windows you measure your frame as the ruff opening the new window will go inside the frame