Weldwood Original Contact Cement
DAP · contact cement
Full cure (70°F / 50% RH)
168h
Min application temp
65°F
Max application temp
120°F
Open time
120 min
Estimate Cure Time
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.
Quick answers
How long does Weldwood Original Contact Cement take to cure?
Weldwood Original Contact Cement fully cures in 168 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 Weldwood Original Contact Cement?
The minimum application temperature for Weldwood Original Contact Cement is 65°F (18°C). Applying below this threshold can prevent proper curing and cause the bond or seal to fail.
How long does Weldwood Original Contact Cement 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 Weldwood Original Contact Cement cure time?
Yes. Weldwood Original Contact Cement cures by water evaporation, so high humidity slows cure. Above 85% RH cure may fail entirely. Low humidity below 40% RH speeds drying but can cause the adhesive to dry before a proper bond forms. Optimal range is 40-60% RH.
What is the open time for Weldwood Original Contact Cement?
Weldwood Original Contact Cement has a working open time of 120 minutes at standard conditions. At higher temperatures open time may shorten; at lower temperatures cure may slow after assembly.