That damaged material was clearly evident, but I marked this section of the aft panel on the roof WAY beyond the damage, then transferred the measurements to a fresh sheet of luan down below. I then marked the fresh sheet and cut it to this new shape, to be used as a replacement.
Once cut, the new sheet was brought up on top of the MH and laid into position so I could transfer lines designating the perimeter of the outer edges of it to the Old roof. Using a circular saw set to 3/16", I cut through the old luan along the marked lines. Old damaged luan was peeled up off the Dow Blue Board insulation, with a 6" putty knife.
'Liquid Nails -Tub Surround' product, was applied to the Blue Board and all wood trim of the MH's aft corner, carefully and plentifully. [regular or Heavy Duty (HD) liquid nails is fine for most things but use the TubSurround formula for the foam] The new panel was positioned and pressed into in place. To be asured that the adhesive did not burn into the foam insualation, I then pulled the 2 materials apart and let them be subjected to air for 4 minutes (The Liquid Nails company says 3-5 minutes). Then the materials were placed together for the final set.
Weighted objects were placed around the perimeter and center of the new panel. An hour later, a nail gun was used to secure the edges where wood was underneath.
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