Is it good to coat in Boise, ID this week?
A live 7-day go/no-go calendar for epoxy & resin floors in Boise, 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
- 10.2°F
- Overnight dew
- Low
- Rain
- 20%
- Window
- 9am–5pm
Cold mornings (down to 50°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- Dew margin
- 7.7°F
- Overnight dew
- Low
- Rain
- 6%
- Window
- 8am–5pm
Clear to coat: temps 56–71°F, RH under 59%, surface stays 7.7°F+ above the dew point, no rain in the cure window.
- Dew margin
- 10.9°F
- Overnight dew
- Low
- Rain
- 2%
- Window
- 8am–5pm
Clear to coat: temps 60–81°F, RH under 54%, surface stays 10.9°F+ above the dew point, no rain in the cure window.
- Dew margin
- 21.5°F
- Overnight dew
- Low
- Rain
- 4%
- Window
- 8am–5pm
Clear to coat: temps 64–84°F, RH under 48%, surface stays 21.5°F+ above the dew point, no rain in the cure window.
- Dew margin
- 19°F
- Overnight dew
- Low
- Rain
- 2%
- Window
- 8am–5pm
Clear to coat: temps 67–82°F, RH under 27%, surface stays 19°F+ above the dew point, no rain in the cure window.
- Dew margin
- 22.9°F
- Overnight dew
- Low
- Rain
- 2%
- Window
- 8am–5pm
Clear to coat: temps 65–84°F, RH under 42%, surface stays 22.9°F+ above the dew point, no rain in the cure window.
- Dew margin
- 33.6°F
- Overnight dew
- Low
- Rain
- 0%
- Window
- —
Too hot — high of 93°F is well over the 86°F ceiling; the film skins over before it can level or adhere.
- Cold mornings (down to 50°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- High humidity (86%, over the 85% mark) slows drying — keep an eye on the cure window.
Caution. 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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Watch this job site 24/7
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.