How To Seal An Roof Top A C Unit

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.

How to seal an roof top a c unit.

Remove the mounting bolts as well as the screws and bolts that secure the air conditioning unit s cover. An air conditioner installed on an rv typically sits on top of the rv unit. 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. You may also need to reseal an air conditioning unit if it has started to leak.

The second part to remove is the outer decorative plastic cover located on the roof usually secured with a few screws. I used a new roof seal epdm repair tape solvent and self leveling. Remove the air conditioning unit placing it on its side and take out the sponge rubber gasket. The sealant held the ac unit better than the 4 bolts that dometic provides.

Main unit and cover removed and down off the roof with the power off disconnect the wire harness. 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. With the plastic cover removed you should now be able to access the main evaporator and condensing unit.