Rubber roof mantince and calking

spadoctor wrote:
There is no reason to wash or seal a rubber roof. As a fact....the more you clean it the shorter the life. Washing removes the "sluff" layer that is designed to protect the membrane causing faster sluffing and shorter life. This material was invented for the commercial flat roof and as such does not get washed or treated. Many treatments contain solvents that can harm an EPDM roof. That being said is yours EPDM or TPO? Tpo can easily be washed. As for caulk...use Dicor self leveling on EPDM but not TPO. I get my caulk from my dealer so I use what was used to manufacture the camper. NEVER use silicone on an rv anywhere. From personal experience I will NEVER use Eternabond again. Touch up existing caulk every 6 months and you are good to go.

How long is the life expectancy of a EPDM roof? Mine is 15 yrs old, I've only had the TT since last fall. I have no clue how the prev owner(s) took care of the TT, so I'm afraid of tiny pin prick holes, that I can't see.

There is no reason to wash or seal a rubber roof. As a fact....the more you clean it the shorter the life. Washing removes the "sluff" layer that is designed to protect the membrane causing faster sluffing and shorter life. This material was invented for the commercial flat roof and as such does not get washed or treated. Many treatments contain solvents that can harm an EPDM roof. That being said is yours EPDM or TPO? Tpo can easily be washed. As for caulk...use Dicor self leveling on EPDM but not TPO. I get my caulk from my dealer so I use what was used to manufacture the camper. NEVER use silicone on an rv anywhere. From personal experience I will NEVER use Eternabond again. Touch up existing caulk every 6 months and you are good to go.

Going to be tackling this job this week. I'm going to use Liquid Roof rubber coating and seal the entire existing roof. The question I'm stuck on....Do I need to remove all existing Dicor or just seal over all existing with Dicor?

Welcome to the forum.

For cleaning rubber roofs many use Simple Green or Murphy's Oil Soap.

Dicor self leveling caulk is used on the roof. You can get it at any RV dealer. I don't know if you can get it at Lowe's.

For any leaks or sealing seams, use Eternabond.

Generally, do not use silicone caulk on your RV.

Here are some old posts on Rubber Roof Coatings.

Enjoy your travels.