If you've had no luck you could try Domestic home insulation and commercial insulation, using polyurethane and foam spray
Disclosure I do have links to this company
If you've had no luck you could try Domestic home insulation and commercial insulation, using polyurethane and foam spray
Disclosure I do have links to this company
We sell closed cell Pu foam to a number of taxidermists it isn't cheap but we occasionally have off-cuts.
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