How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manfuactured and modular homes
Why is the floor tile cracked in my mobile home?
Sunday, August 19, 2018
Without actually examining the tile and floor underlayment, we can’t tell you for sure what is causing the problem, but the floor sheathing in a mobile home is not designed to accept ceramic floor tile over it unless it was originally installed at the factory. Tile requires a stiff underlayment that does not flex at all when walked on—or when a refrigerator or range is rolled over it.
When a homeowner decides to lay ceramic tile over a floor that was originally covered with carpet or vinyl tile, it’s necessary to lay down an additional layer of plywood or a cement tile backer board to provide sufficient resistance to flexing of the underlayment that causes cracking.
If ceramic tile has been installed on a manufactured home floor as part of a remodeling, the floor should be noticeably higher that surrounding carpet due to the additional thickness of added underlayment. While the impact of a heavy object dropped on a tile floor can cause a crack or two, multiple cracks in a tile floor are likely due to lack of an adequately stiff underlayment.
Also, see our blog post What causes a crowned floor in a mobile/manufactured home?
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