Outer wall constuction

[DW]

We are considering a Redman New Moon Elite single wide to be placed in a park and have been told the outer wall is constructed of "insulation board". An upgrade to OSB is an additional $700. Anybody know what insulation board is and is it a good product?

[Jeff]

you definetly want to go with the osb. especially around the windows and doors osb is better for heat loss and moisture and protects siding from having to be replaced so quickly. check on the warranty difference of osb to not