See this FAQ post. http://www.sunlineclub.com/forums/f1...nks-11910.html
Scan down to this section.
Restoring a Sunline
1. Repairing water damage on your Sunline.
We have had others totally redo the soft floor in their campers. If you are handy with wood working skills this is for sure doable. The real question is, where did the source of the water come from? The soft floor usually points to water some how came in. Depending on how it came in and when will dictate how small or large the repair will be. Try and look up at the wall board for any signs at all of water discoloration. If it came down from above there may be other damage.
Since it is in front of the door it may have come in thru a bad door seal. That would be a good thing maybe as the water entry is localized to down low.
Is this fixable, yes for sure it is. If you can do the work yourself if could be worth it. If you have to hire this out to a RV repair shop this can get very pricey.
The good news is the asking price is on the low end. You will have to add something to it to get it fixed. If you have to hire it out it could end up being more then you paid for the camper if the rot goes up the side walls.
If you really want the unit and can do the work yourself, maybe use that soft spot to see if you can lower the price as much as you can. It will help offset the repair materials.
Hope this helps and good luck
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
Google Custom Search For Sunline Owners Club