Roof Vent update DICOR

I rebuilt this 71 Red Dale about 6 years ago. I used Dicor self leveling lap sealant on the roof vent and Fan. It is removable and must be inspected and touched up on a yearly basis. So here is a story about the sealant and leaving the trailer uncovered in glaring sun as well as open to winter freeze/thaw cycles.

Here is a newly sealed vent:

<a data-flickr-embed="true" href="https://www.flickr.com/photos/53634851@N03/35577486721/in/album-72157711234756182/" title="Dicor on a roof vent"><img src="https://live.staticflickr.com/4254/35577486721_cf276fc328_z.jpg" width="640" height="427" alt="Dicor on a roof vent"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

Red Dale, the first years:

<a data-flickr-embed="true" href="https://www.flickr.com/photos/53634851@N03/51147772864/in/dateposted-public/" title="Redd after 5"><img src="https://live.staticflickr.com/65535/51147772864_7df16ecccb_z.jpg" width="481" height="640" alt="Redd after 5"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

Starting to deteriorate:

<a data-flickr-embed="true" href="https://www.flickr.com/photos/53634851@N03/51147215168/in/dateposted-public/" title="Redd after 4"><img src="https://live.staticflickr.com/65535/51147215168_43056d0d73_z.jpg" width="481" height="640" alt="Redd after 4"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

Owner opened it up and discoverd seepage with black staining at the vent flange:

<a data-flickr-embed="true" href="https://www.flickr.com/photos/53634851@N03/51146313477/in/dateposted-public/" title="Redd after 7"><img src="https://live.staticflickr.com/65535/51146313477_3d3044d825_z.jpg" width="480" height="640" alt="Redd after 7"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

She used RV roof tape for her repair:

<a data-flickr-embed="true" href="https://www.flickr.com/photos/53634851@N03/51147215158/in/dateposted-public/" title="Redd after 8"><img src="https://live.staticflickr.com/65535/51147215158_8404fb7696_z.jpg" width="480" height="640" alt="Redd after 8"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>

She did a beautiful job and I told her to leave it as it is. The vent no longer leaks.

This shows a good example of weather damage to vent sealants. Dicor does crack in time but the product sticks to itself, so is easy to touch up. Your vintage trailer should be stored under cover. Even a tarp is better than nothing.

Comments welcome.