How can I stop dry rot on an old window frame?

You really can't "stop" dry rot - once the wood is rotted, that's it. Are you using the window as a window in your home? Or, is your plan to use it as odd decor in the garden or something? IF you plan to install the window in your home, you will need to remove the rotted wood and replace it with new. If you merely want to put it in the garden you could leave it as is, possibly putting a few pieces of wood to keep it all together. You could alternatively add some metal braces to the wood that's intact. Other thoughts would be to "seal" the rotted parts with Kilz, primer and some oil paint.

If for your home, you must cut out all damaged wood and replace using wood glue a piece to fill the void. Small sections should also be removed and can be made up with Plastic wood compound, sanded when dry and then Primed Undercoated and Top coated.

If for a Garden Project, I would still do the later, but you might be able to preserve it by using lots of Resin type Glue squeezed into the frame where you have the Rot. Then when Dry use Plastic wood compound and finish as above.

Good Luck!

It's a pleasure.................

If it's just decorative, you can use wood putty to fill in some of the bigger cracks and gaps. I would suggest painting it with waterproof paint or just waterproof sealant if you don't want to cover it.

Thanks so much for the advise. Sorry it took so ling to reply.......Blessings, Michelle

Hiya Kat,

Thanks so much, soz it took so long to get back in touch, I used the wood putty and it worked well. Not ready to paint it yet love the rawness of it for now.....

I am currently redoing My living room tables......so much fun using different techniques to breath new life into older worn out pieces!!

Have a blessed day and I hope You can enjoy some sun today too,

Michelle