Hi, would you recommend coating a new wood stretcher with a coating of some kind, such as a water-borne polyurethane to seal the wood? Should I be concerned about volatile emissions from the bare wood on my cotton or linen canvas over the long term? The stretcher bars are bevelled. Thanks.
There is certainly nothing wrong with doing this….at all in fact. The wood used for stretcher bars will vary in quality from one brand to the next (and even within the same line) so at times coating the wood might not be necessary. If you choose to do this you can certainly use a polyurethane like you stated or apply a coat or two of Paraloid B-72 in acetone.
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