PC-7 Paste Epoxy
PC Products · epoxy
Full cure (70°F / 50% RH)
48h
Min application temp
35°F
Max application temp
115°F
Open time
60 min
Dry to touch
160 min
Estimate Cure Time
Common use-case guides
When this estimate may be unsafe
- - The joint, bead, pour, or repair is thicker than the product data sheet assumes.
- - The substrate is colder than the surrounding air, wet, oily, dusty, painted, or otherwise poorly prepared.
- - The repair will carry weight, resist water pressure, or be safety-critical before full cure.
- - The surface is near the dew point or humidity is high enough to create amine blush.
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Quick answers
How long does PC-7 Paste Epoxy take to cure?
PC-7 Paste Epoxy fully cures in 48 hours at standard laboratory conditions, usually 70°F / 21°C and 50% relative humidity. At colder temperatures or difficult humidity, cure time can increase significantly.
What is the minimum temperature to use PC-7 Paste Epoxy?
The minimum application temperature for PC-7 Paste Epoxy is 35°F (2°C). Applying below this threshold can prevent proper curing and cause the bond or seal to fail.
How long does PC-7 Paste Epoxy take to cure in cold weather?
Cold temperatures significantly extend cure time. As a rule of thumb, every 18°F (10°C) below 70°F can roughly double cure time. Enter your actual temperature in the calculator for a product-specific estimate.
Does humidity affect PC-7 Paste Epoxy cure time?
Minimal effect. PC-7 Paste Epoxy is a two-part chemical reaction so ambient humidity has little influence on cure rate. Temperature is the primary variable. Use the calculator above for adjusted estimates.
What is the open time for PC-7 Paste Epoxy?
PC-7 Paste Epoxy has a working open time of 60 minutes at standard conditions. At higher temperatures open time may shorten; at lower temperatures cure may slow after assembly.
Does PC-7 Paste Epoxy get amine blush?
Yes. Amine blush can form when this epoxy cures in high humidity or near the dew point. Wash the surface and lightly abrade before recoating or bonding over it.