In this Test Tuesday, we are testing Mineral Spirits. I am using Sunnyside brand low odor mineral spirits. I used a brush to apply the solvent in an X shape across each of the samples, then allowed them to dry.
The only samples that showed a visible effect (while the paper was still attached) were the Readi-Board red and black samples. The edges the marks appear slightly darker than the rest of the paper.
The mineral spirits did affect the foam beneath the paper slightly. You can see a small variance in texture where the solvent was applied. This did not affect how difficult it was to remove the paper facers.