Is it good to coat in Anchorage, AK this week?
A live 7-day go/no-go calendar for epoxy & resin floors in Anchorage, 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
- -2.2°F
- Overnight dew
- High
- Rain
- 25%
- Window
- —
High condensation risk overnight — surface dips to within -2.2°F of the 43°F dew point (low 39°F, 100% cloud, 3 mph wind). A fresh coat can blush/blister. Stop 4h before dew falls.
- Dew margin
- 4.6°F
- Overnight dew
- Watch
- Rain
- 28%
- Window
- 1pm–5pm
Watch overnight dew — surface comes within 4.6°F of the dew point (margin is 5°F). Time the coat to dry well before evening.
- Dew margin
- 0.6°F
- Overnight dew
- High
- Rain
- 64%
- Window
- —
High condensation risk overnight — surface dips to within 0.6°F of the 36°F dew point (low 35°F, 100% cloud, 3 mph wind). A fresh coat can blush/blister. Stop 4h before dew falls.
- Dew margin
- -1.5°F
- Overnight dew
- High
- Rain
- 42%
- Window
- —
High condensation risk overnight — surface dips to within -1.5°F of the 29°F dew point (low 26°F, 9% cloud, 3 mph wind). A fresh coat can blush/blister. Stop 4h before dew falls.
- Dew margin
- -4.2°F
- Overnight dew
- High
- Rain
- 10%
- Window
- —
High condensation risk overnight — surface dips to within -4.2°F of the 30°F dew point (low 26°F, 91% cloud, 4 mph wind). A fresh coat can blush/blister. Stop 4h before dew falls.
- Dew margin
- 6.2°F
- Overnight dew
- Low
- Rain
- 35%
- Window
- —
Too cold to coat — daytime high only 41°F, below the 50°F minimum (even a low-temp line needs 50°F+).
- Dew margin
- -0.2°F
- Overnight dew
- High
- Rain
- 54%
- Window
- —
High condensation risk overnight — surface dips to within -0.2°F of the 38°F dew point (low 38°F, 100% cloud, 3 mph wind). A fresh coat can blush/blister. Stop 4h before dew falls.
- High condensation risk overnight — surface dips to within -2.2°F of the 43°F dew point (low 39°F, 100% cloud, 3 mph wind). A fresh coat can blush/blister. Stop 4h before dew falls.
- Humidity peaks at 100% — well above the 85% ceiling; cure stalls and moisture gets trapped.
- Cold mornings (down to 40°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
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.
Free in the beta
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.