We used lap sealant because it was what the manual recommended but it also self levels really nicely. You could certainly use something like 3m 5200. Happy building!

Hello! You are right! I will update the post to remind people to face it the correct way! We unfortunately were more than an inch or two from clearance but we actually just sold that house and are full time nomads so it doesn’t matter anymore anyway 😁

2) Not sure how close you are to being able to clear your garage entrance, but if it’s only an inch or two too high, and you ever need to work on the rear part of the van in the rain (or want to park the van in the garage in an emergency/for any reason), you might try letting some air out of your rear tires and see if you can get clearance. Don’t want to let out too much air to where you can’t drive (unless you have compressed air/other way to reinflate tires), but if you have the latter, you can reinflate them immediately once the van’s inside if there’s enough ceiling room, so the tires won’t sit too long in a deflated condition (not great for tires). If you need to fly out of town etc, and didn’t want the van outside, that might be an option. Again depending on how close the clearance is. If it’s less than an inch too high (just guessing), and you live close to a gas station w air, you might not even need your own air. Just an idea if that would help!!