Is there a waterproof stuffing for outdoor cushions?
I want to redo the seat cushions on an outdoor ice cream table set and want to be able to leave the chairs outside. I do have a vinyl covering with a substantial backing for the seat covers.
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How about Compressed Polyester and Polyurethane Foam- its weather resistant.
I do not know about the stuffing, but there are a number of products on the market for spray on water-proofing. You would spray it on the cover fabric.
I used a thin plastic around the cushion under the covers of mine. Good luck.