Here's a related question about the DAP HHR cement - what's the shelf life like? I've gathered all the materials for my first practice seat upholstery along with a gallon of the DAP and was wondering how best to preserve it?
Since I don't have any spray equipment I was gonna brush/roll it on (which I've read is fine to do), so my thoughts were to transfer some of the cement from the gallon can into a quart-sized can which I would use first - this way I wouldn't have to constantly open the gallon can every time I wanted to use it. Would filling the remaining space in the gallon can with propane (like with long-term paint storage) help, or not worth the effort? I'll be keeping the cans in the house so they won't be subject to freezing temps during the winter.