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Got roasted on a flooring forum for using self-leveler wrong, now I never skip the primer.
A guy with 20 years experience told me my cracked tile job was from skipping primer on the concrete, but half the comments said primer is a waste of money for small patches, so which side is actually right when your subfloor has old glue residue?
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irismartinez7d ago
Read somewhere that old glue residue needs primer even more because it creates a weak bond.
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terry_carter157d ago
Honestly, that's a really good point. If the glue is hidden under paint and not sealed right, it can basically turn into a weak layer that just lets everything lift off later.
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lucashart7d ago
Yeah, the "weak bond" part is what gets people. If you paint over glue residue without primer, that stuff can fail in like a year and peel off in sheets. I've had to scrape off whole ceilings before because someone skipped the primer step.
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