Methodology

Dry, set and cure are different

• Dry (tack-free, dry to touch): the surface has skinned or lost its tackiness. The material underneath may still be soft or wet.
• Set: the material has hardened enough to hold its shape or position, but has not reached its rated strength or resistance.
• Cure: the chemical or physical process is complete enough for the manufacturer’s rated properties — strength, water resistance, chemical resistance. Full cure often takes much longer than dry.

Manufacturer minimums versus estimates

We use three levels and label every time with its level:

1. Manufacturer time. The exact stated milestone, unmodified.
2. Manufacturer-supported calculation. Used only when the manufacturer publishes a table, conditions or formula — for example, a sealant that is water-ready in 30 minutes only when the bead is small, it’s warm enough and humidity is high enough. We show the original value and the method.
3. Environmental caution. When the manufacturer only says that cold, humidity, thickness or poor ventilation slows things down, we don’t invent a multiplier. We show: “Your conditions may extend the stated minimum. The manufacturer does not publish an exact correction factor. Allow additional time and verify the material before use.”

We never present false precision. If documentation says “allow longer,” you will not see a calculated “5 hours 17 minutes.”

Environmental limitations

Stated times assume the manufacturer’s baseline conditions, which we show when the manufacturer gives them. Real jobs vary with temperature, humidity, airflow, thickness, porosity of the surface and mixing. Weather checks compare the forecast only against limits the manufacturer publishes.

Why exact product identification matters

Products with nearly identical names can have very different times. In our data, DAP ALEX PLUS white is paint-ready in 30 minutes while ALEX PLUS clear needs about 7–14 days. A US formula and a Canadian formula of the same brand may also differ. That is why each product page shows the formula and region, and why we keep them as separate records.

Verification process

1. Times are entered from the current manufacturer source, in this order of authority: technical data sheet, official product page, installation guide, a manually verified label, then generic guidance clearly marked as generic. Retailer descriptions are never the primary source when manufacturer documentation exists.
2. Each time stores its source URL, source type, quoted or paraphrased statement, baseline conditions, document revision, date checked, region and formula.
3. Records start as “not yet human-reviewed” and are marked reviewed only after a second check against the source.
4. Corrections from users are reviewed by hand; nothing is published automatically.

Why unknown information is not guessed

A wrong “ready” can mean a ruined finish, a failed seal or a safety problem. A missing number is better than an invented one, so missing milestones are shown as “Not provided by manufacturer.” For structural, automotive, fuel, pressure, potable-water, electrical, food-contact, chemical or submerged uses, elapsed time alone is never treated as proof of readiness.