Is it good to coat in Salt Lake City, UT this week?
A live 7-day go/no-go calendar for epoxy & resin floors in Salt Lake City, built from the local forecast against the 5°F-above-dew-point rule. We lead with the signal a weather app misses: overnight condensation risk.
- Dew margin
- 18.1°F
- Overnight dew
- Low
- Rain
- 12%
- Window
- —
Too hot — high of 98°F is well over the 86°F ceiling; the film skins over before it can level or adhere.
- Dew margin
- 15.3°F
- Overnight dew
- Low
- Rain
- 56%
- Window
- 8am–5pm
Some rain risk (56%) during the cure window — re-check the radar before you start.
- Dew margin
- 8.6°F
- Overnight dew
- Low
- Rain
- 92%
- Window
- —
Rain likely in the 24h cure window (92% chance, ~4.1mm) — it can wash out or mar an uncured coat.
- Dew margin
- 13.7°F
- Overnight dew
- Low
- Rain
- 27%
- Window
- 8am–5pm
Clear to coat: temps 71–86°F, RH under 51%, surface stays 13.7°F+ above the dew point, no rain in the cure window.
- Dew margin
- 25.9°F
- Overnight dew
- Low
- Rain
- 5%
- Window
- —
Too hot — high of 92°F is well over the 86°F ceiling; the film skins over before it can level or adhere.
- Dew margin
- 24.3°F
- Overnight dew
- Low
- Rain
- 3%
- Window
- 8am–5pm
Hot afternoon (91°F, ceiling 86°F) — coat early and follow the shade.
- Dew margin
- 19.2°F
- Overnight dew
- Low
- Rain
- 7%
- Window
- —
Too hot — high of 94°F is well over the 86°F ceiling; the film skins over before it can level or adhere.
- Too hot — high of 98°F is well over the 86°F ceiling; the film skins over before it can level or adhere.
Hold off. These are forecast numbers — confirm the surface temperature on-site before you start.
Why these thresholds
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.
- • Surface temp must stay 5°F above the dew point through application and cure (ASTM D3276 / ISO 8502-42).
- • Air + surface in the 50–86°F band (low-temp lines to 50°F).
- • Humidity under 85%; ideally under 80%.
- • No rain for 24h after application.
- • We use the forecast ground-surface temperature as a surface-temp proxy — confirm on-site with an IR thermometer.
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Get an email the moment overnight dew, rain, or an out-of-range stretch threatens a fresh coat — and a morning digest with the best window ahead. No app to check; we watch the forecast for you.