"Buck Turgidson" wrote in message
Yes, you're giving up a lot. When your original windows were installed,
it is possible, even likely given that your house is 60 years old, that
they did not insulate between the window frame and house framing.
Significant energy loss occurs there. Just replacing the sash won't
correct that.

Tear them out down to the frame and do it right.

Rather than 30 minutes and $3 in material, you can be talking many hours and
new siding to do the job right. The answer varies according to construction
and condition.


I've sold and installed many replacement windows. You take out the side
stiles and sash weights and insulate.
Installing replacement windows is easily a DIY job that is going to make the
house more livable and you can save a bundle of money. I'd make the
equivalent of about $80 $90 an hour in today's money.