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Appreciation post: My boss in Denver showed me his trick for a bad subfloor after I almost ruined a whole glue-down job
Honestly, I was laying this engineered wood in a 1920s bungalow last month and didn't catch a soft spot that flexed a full quarter inch until the adhesive was already setting, so I called him panicking and he had me cut out a 2x2 foot section, sister in new joists with construction adhesive and screws, then pour a leveling compound patch, which saved the install and about $1500 in material.
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loganhart9d agoMost Upvoted
A quarter inch flex is a lot, but cutting out a whole section seems like overkill. Couldn't you just inject some glue from below to stiffen it up? I've shimmed from the basement for way less movement and it held fine for years. That fix sounds like a full day's work for a small spot.
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