Old wooden screens can be rebuilt and made better than new
Follow these steps and your screens will be sealed from damaging moisture and will last a very long time
Remove screen stops and old screening material
Remove brads or nails that held screening in place (you can leave old staples if you hammer them down flush).
Refasten frame so it is strong and square. I use a air powered 1 to 1 1/2 inch pin nailer to strengthen rail and stile portions of frame
If necessary you can reinforce frame with metal brackets available at you hardware store.
Scrape and sand surfaces. Use a vacuum sander to minimize any dust.
Prime all surfaces; even those surfaces that will be hidden. If inside of screen is to be a different color that the outside then use a clear primer on the hidden surfaces where color will transition.
Pre-prime and pre-paint all your new wood screen stops
Pre-prime and apply 1st coat of paint to frame.
Cut your new screening oversized a bit and use a air powered stapler to install new screen. Cut screening after fastening in place using a utility knife or one sided razor blade.
Install new stop using a air assisted pin nailer with very short pins. Adjust pressure so you don’t put pin all the way through the very thin stop…just so it is flush
Use an elastomeric caulk to fill seams and holes and wet wipe to make smooth
Apply two more coats of paint Be sure to paint tops, bottom and sides of wood frame to wood will not take on water and peel!