Once again, spring is upon us and so are those RV maintenance chores! This week we climbed up on the roof to check all the seams and reapply Dicor lap sealant where needed.
For those that have followed along with us you’ll know that we replaced our entire roof (along with some walls & floor) about a year and a half ago. During that time we haven’t had any issues with the roof, but after dealing with the aftermath of water damage we know the importance of preventative maintenance. When we dewinterize in the spring we do a pretty thorough check of the RV and all the systems and nip any potential issues in the bud. One of our highest priorities is keeping water out of our RV!
As far as the roof goes, we first walk (or crawl) the entire roof looking for any damage to the rubber membrane. We then focus on all seams around vents, transitions, trim, etc. looking for cracks or holes that could potentially let water through. At this point we clean the seams and reapply Dicor lap sealant to anything questionable since it’s likely I won’t check again for another year. I apply new sealant directly over any cracks and only peel the old sealant away if it’s already hanging or coming off.
Watch how we completed this on our trailer!
Here are the supplies you’ll need to finish the job:
- Self-leveling lap sealant
- Caulk gun
- Bucket or buckets
- Soapy water (I used very watered down Mr Clean this year because that’s what I had)
- Fresh water
Now that you have everything you need, here are the steps we follow to reapply Dicor lap sealant on our roof:
NOTE: Dicor lap sealant comes in self-leveling (for horizontal surfaces) and non-sag (for vertical surfaces)variations, so be sure to use the self-leveling type when sealing on the roof.
1- To get started you’ll need to clean the old sealant and surrounding areas well. We use soapy water and ring the rags out until they’re just damp. Continue scrubbing until all of surface dirt is removed and then go back and do the same with fresh water.
2 – Next, take a clean rag, apply alcohol to the rag and continue to clean the surface. This is when you’ll see things go from grey to white and really get clean.
3 – Once the areas are clean go back over the everything with a clean dry rag to remove any moisture or left over debris. Before applying the new Dicor sealant it’s also a good idea to let the roof air dry for a bit.
4 – After everything is clean and dry, you can now apply the Dicor lap sealant. This product applied just like any other caulk using a caulk gun. Apply it liberally to all areas to be sealed and the self leveling sealant will level and smooth out. There’s no need to go back and smooth anything out yourself.
Now that you have everything on the roof sealed nicely, continue around the RV and check your corner seams and anything protruding through the outside walls. For this I prefer to use Geocel ProFlex RV, but there are many RV specific sealant designed for vertical surfaces will work.
Do you have any tips or tricks you’d like to share? Leave them in the comments below.