I used a new roof seal epdm repair tape solvent and self leveling.
How to seal an roof top a c unit.
With the plastic cover removed you should now be able to access the main evaporator and condensing unit.
You may also need to reseal an air conditioning unit if it has started to leak.
Remove the mounting bolts as well as the screws and bolts that secure the air conditioning unit s cover.
The second part to remove is the outer decorative plastic cover located on the roof usually secured with a few screws.
Contractor grade tapes seal out water to prevent damage to air conditioners and other hvac equipment mounted on roofs addison il august 24 2009 pres on the hvac industry s leader in adhesive gaskets and tapes has introduced a line of contractor grade curb tapes specifically designed to seal roof curbs to a c units preventing rain moisture and dust from damaging their increasingly sensitive electronics.
In this somewhat lengthy video i fix the leak at the a c in our 2006 sierra toy hauler.
Main unit and cover removed and down off the roof with the power off disconnect the wire harness.
Remove the air conditioning unit placing it on its side and take out the sponge rubber gasket.
Place the new gasket and reassemble the rooftop unit wiring and plastic housing.
The proper way to seal an rv air conditioner is to use a rubber compression gasket placed between the roof of the rv and the air conditioner.
However after two hours of removing the old gasket which had sealant applied and held the ac unit to the roof top firmly i wondered if there was a step that dometic omitted.