Given the nature of needing this to work, and the fact that it is constructed for an outdoor wedding, I needed to prepare for possible rain. The electronics could all be wrapped up in plastic, but I was concerned that rain falling on the hot surface ignitor could cool it, and prevent it from getting hot enough to ignite the propane. Or possibly worse, and crack it due to rapid change in temp. I cut a simple rain shield of of scrap sheet metal which just clips over the top to cover one of the HSIs. I ran this through testing, and though it does deflect the flame a little at an angle, it ignited fine.