For painters · stainers · floor coaters
Never blow apaint job to thedew point.
Free city-by-city paint-weather forecasts — plus a job-site monitor that warns you when overnight dew or condensation threatens a fresh coat. It's the failure behind 40%+ of exterior callbacks, and the one a generic weather app never flags.
Surface 27°F over dew point — clear to coat.
The expensive mistake
The crew did everything right at 2 PM. The failure was baked in by the forecast they never checked.
A coat goes on during a fine afternoon. Overnight the surface cools below the dew point, moisture condenses on the curing film — and you're back next week scraping blisters for free.
trace to wrong-weather application within the first two years (PPG TB-100 / Sherwin-Williams).
Clear skies and low wind pull surfaces well below air temperature — long after the crew has packed up.
They show you rain and a daytime high. None of them flag the surface-vs-dew-point spread that actually ruins the coat.
Pick your trade
What are you coating?
Each coating has its own failure mode and its own thresholds. We tune the rules to the one you're applying.
Exterior Paint
Overnight dew condensing on a fresh coat causes blistering, surfactant leaching and peeling — the cause of 40%+ of exterior paint failures.
Is it good to paint this week?→Deck & Fence Stain
Stain applied to a damp or dew-wet board can't penetrate — it beads, stays tacky and flakes. Wood must be dry and stay above the dew point while it sets.
Is it good to stain this week?→Epoxy & Resin Floors
Installing within 5°F of the dew point causes amine blush / carbamation — a cloudy, greasy, hazed floor. The slab surface temp, not the air, is what counts.
Is it good to coat this week?→How it works
A field instrument, not another weather app.
Surface vs. dew point
We compare the forecast ground-surface temperature to the dew point and flag when the gap drops under the 5°F ASTM margin overnight.
7-day go / no-go
Every day gets a green / amber / red verdict with the binding reason and the raw numbers — temps, humidity, rain in the cure window.
Alerts, not apps
Register a job site and we email you on the transitions that matter — plus a morning digest with the best window ahead. We watch so you don't have to.
You make the call
We alert on risk, never on “go,” and show our work. Confirm the surface temp on-site with an IR thermometer before you coat.
We alert on risk, not on “go.” This is a scheduling and risk advisory — never a guarantee. Confirm the surface temperature on-site before you coat.
Let us watch the night shift.
Register a job site and get an email the moment overnight dew, rain, or an out-of-range stretch threatens a fresh coat — plus a morning digest with the best window ahead. Free while we're in beta. No card, no app.