When is it time to replace windows? I have a window that has condensation between the 2 panes. Can’t I just have this repaired by taking the sash out? A window company near me does this for $80-90 per sash. Or should I just have the whole window replaced ? Thanks

I Want to restain/paint a small fence and gate. I recently did repairs to. My question is:

The pickets/areas that were stained before - should I power wash or sand before restaining? Any recommendations for a stain? Pic is below

https://imgur.com/a/DvP9MnM