Search "spray foam insulation" on TikTok's discovery page and the auto-suggested searches skew heavily negative — mold, problems, "why is it bad." It's tempting to read that as a referendum on the product. It's more accurately a referendum on what performs well on a short-video discovery algorithm, which is a different thing.
The same cases, recirculating
A close look at viral spray foam content reveals a smaller pool of underlying source material than the volume of posts suggests — a handful of well-documented cases (a Florida odor case, various regional mold-and-moisture incidents) get re-cut, re-captioned, and reposted repeatedly over years, each recirculation reaching a new audience that may have no idea the underlying story is old.
Why this matters for your research
If you're researching spray foam by scrolling TikTok, you're likely seeing the same small number of real incidents repeatedly, not a representative sample of outcomes across millions of installations. That doesn't make the incidents less real — see our full guide on why horror stories go viral — but it does mean the volume of content you're seeing isn't a reliable proxy for how common these problems actually are.
A more useful research approach: identify the specific root cause behind any case that concerns you (usually installation quality, not the material itself), and turn that into a direct question for any contractor you're evaluating — see our contractor-vetting sister site for the exact checklist.
The auto-suggest feedback loop
Search auto-suggestions are themselves shaped by what other users have searched and clicked, which means an initial cluster of negative-leaning searches can reinforce itself over time — each person who searches the suggested negative phrase and clicks through reinforces that same suggestion for the next searcher, regardless of whether it reflects the actual balance of outcomes.
None of this is a reason to stop researching on social platforms — it's a reason to treat auto-suggested searches and discovery-page content as a starting point that needs verification, not a finished picture of reality. Cross-reference what you find there against the source-checking habits covered in our full guide on reading spray foam news critically.