In cold weather this can take an hour and depending on temperature the primer may not dry at all.
Rubber roofing in cold weather.
If shingles are applied below 40 without the specialized adhesive you risk a voided warranty.
In cold weather roofing contractors need to take special precautions when installing rubber roofs.
Keep the glue warm 60 deg s before using it.
Rubber roofing in cold weather i do believe it is around 40 50 degs is what is recommended real world experience says 20 30 s other then that flash times take way longer.
With that said prior to making any commitments to installing a rubber roof make sure to ask the contractor how they would approach installing a rubber roof in cold weather.
If winter installation is unavoidable most asphalt shingle manufacturers require a specialized adhesive manually applied to each shingle for temperatures below 40 f 4 celsius.
However rubber roofs can in fact be installed during cold weather if and only if you re working with a contractor who is experienced in cold weather roofing.
In the case of rubber roofs the entire system is usually installed with several different adhesives one to glue rubber to the insulation one for the seams special seam primers and cleaners etc and every rubber roof manufacturer explicitly points out that their roof should not be installed in temps below 40 degrees.
Third before applying patch seam tape cover tape you must apply epdm primer and let it dry to pass the tack and pull test.