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Hello all, I'm new so first a little introduction, I'm a college student living in my parents mobile home, we have been living in a mobile home since 1996. Our current one is a 2001 Friendship singlewide 16x80, it sat on a dealer's lot for two years as a model. Then in 2003 we traded in our old one for it and it was moved to our current location. It is based on gravel/sand pack mix which was spread/compacted by a backhoe, and supported by concrete block pillars/piers and tied down with metal strapping. It has not been releveled since it was installed, maybe a bad thing?
So the problem we are having is with our kitchen floor, it has a large lump growing from right after the cabinets on one side (80 ft side) to just before the dishwasher on the other, beyond that it is reasonably flat but in the middle it is very uneven. It seems to be about 10 feet long by about 1-2 feet wide by 1-2 inches tall depending on the spot, and it sort of arcs from one side to the other. I first noticed it as a very slight slant in the floor about two years after we moved in, it has only started to "grow" recently, and seems to be getting worse every week now. We will be calling in someone to look at it, since neither me or my Dad have any sort of experience to deal with it. I'm just wondering if anyone knows what the cause could be? I'm wondering if maybe a support column didn't settle with the rest? Warped beam? It's parallel to the front of the house (16 foot side) and the crown of the lump is about 11 feet from the front wall/windows. Also our lot has a little incline to it so the front of the house, where the kitchen is, is about 5 feet off the ground and the rear is roughly one-two feet above ground. Aside from the lump the rest of the house seems pretty level. If anyone has any ideas about this we would appreciate it. If you need any other info, a better description or clarifying on this description let me know. I would try to take a picture but the vinyl floor separated from the subfloor by the lump so it's hard to see it. I could try taking a picture though if it would help.