A couple months ago, one of the first things Blanche received was the MaxxAir MaxxFan. We installed it using Eternabond tape to seal the exterior instead of caulking or lap sealant. After some research (okay, only like 10 minutes) and consulting the great and powerful interwebs, it seemed that this Eternabond tape is worth the extra money since it was supposed to never leak and never need maintenance. Sadly, it doesn’t come in short lengths, so we had to buy a 50 foot roll for about $50, even though we only used about 6 feet of it. Still, if we never had to worry about leaks, it was worth it.
Admittedly, the tape on the roof doesn’t look so great, but there were no leaks and all was well…
…Until the rain came. Real rain, not just sprinkles. In fact, there were quite a few heavy rain storms this spring, and every time it rained outside, it rained inside Blanche, too. The Eternabond tape, despite taking every precaution to ensure a clean surface to bond to and using a roller to press it down, had failed.
It needed fixing, and fast. Some parts of the tape were still stuck quite well, but other, more critical areas had completely un-stuck from the fan flange and the van roof, allowing water to penetrate the roof. Trying to remove the Eternabond was easy where it had failed, and horrendously difficult where it had not failed. Not wanting to scratch or damage the paint on the van, we had to be careful and take our time. We had discovered that the best way to remove this stuff is with a ton of WD-40 and a plastic putty knife. Needless to say, it was a very messy job.
Removing the tape glue was pretty much a one person job, so in the meantime and with the MaxxFan removed, I decided to use some scrap sound dampener on the lid of the fan to help quiet the rain drops on it.
I figured I might as well add reflectix for some insulating value as well.
Once the fan modifications were completed and all the tape glue was removed from the roof and flange, we used good old fashioned Dicor Lap Sealant to seal the exterior. I should have just done this from the start, especially since it is only $10 for a tube. It looks a hell of a lot cleaner, too.
As a final note, we’ve wired the fan up to a standard 12-volt cigarette lighter plug for power. After using it, we’re really happy we went with the MaxxFan instead of a Fantastic fan. It has many fan speeds, and the lowest few are extremely quiet.