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Popping subfloor repair from crawlspace

🏠 homeproduct problemSingle report ●●●●● severity 3/5

A homeowner reports that their contractor only nailed the subfloor instead of screwing it to the joists during a kitchen remodel, causing the floor to pop. The homeowner cannot access the subfloor from above due to installed cabinets and tile.

Who's affected: A homeowner

⚠️ Single report. This is one person's account. We mark it so until more voices confirm it.

What people do today

πŸ”§ Fix this

Ideas a builder, maker or community group could start on:

  1. A specialized shim kit designed for crawlspace installation to bridge gaps between joists and subfloor.
  2. A guide or template for installing structural adhesive or blocking from underneath without damaging joists.
  3. A professional consultation service that specializes in non-invasive subfloor stabilization for finished homes.
I want to build this

Real voices

β€œmy contractor laid tile after replacing part of the subfloor and using the backer board, but he only nailed it and did not screw the subfloor to the floor joists. Now kitchen is finished and the floor is popping every time I walk across it.”

Source: Stack Exchange (diy) Β· CC BY-SA 4.0, user-contributed content from Stack Exchange; summarized and modified

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