RV Bathroom Vent and RV Sewer Vent Cap

Published on September 16th, 2019
Love Your RV

If you ever go up on the roof of your RV, you’ll likely find you have two vents over the bathroom area: the RV bathroom vent and the RV sewer vent. Both of these are necessary, and properly caring them is a very important part of RV maintenance.

One of the most important aspects of caring for these vents is ensuring the vent caps are clean and free from cracks or other issues. This is easy enough to do when doing your regular roof inspections, and doesn’t take much extra time at all. Simply take a glance at the caps and see if there are any cracks or holes, clean any debris from the sewer vent cap if necessary, and it’s done.

If you do happen to find a break in either vent cap, or if the sewer cap is excessively clogged, it’s probably time for a replacement.

Choosing an RV Sewer Vent Cap

Before you begin the replacement process, you’ll want to look into the various types of RV sewer vent caps in order to ensure you’re getting what you really want. After all, why put in a replacement that you don’t love?

Surprisingly, there are a few different options when it comes to RV sewer vent caps. There are, of course, the typical caps which come in a variety of colors and tend to get the job done just fine.

However, there are also some options that do an extra good job of pulling tank smells up and away from your home. These include the much-loved Cyclone vent caps, which create an awesome vacuum using only the wind, as well as other types of “siphon caps” which employ different designs but do essentially the same thing. There are even solar-powered options that use a small solar panel to collect enough power to pull smells up using electricity.

Replacing an RV Sewer Vent Cap

Replacing a sewer vent cap requires only the replacement cap, a screwdriver, a drill, a putty knife, a tube of RV roof lap sealant, a caulking gun, and plenty of patience.

Begin by removing the old sealant using the putty knife. Once enough sealant is removed, you should be able to remove the screws around the old cap and pull it off of the roof. Once the old cap is gone, remove the rest of the old sealant.

To install the new cap, put a good amount of lap sealant around the outside of the vent hole. Place the new cap in the hole, making sure there is sealant under the entire lip of the cap. Using your drill if necessary, screw the new cap into the roof, and cover the entire lip with another layer of lap sealant.

Replacing an RV Bathroom Vent Cap

When it comes to replacing an RV bathroom vent cap, you don’t have much choice in the type of cover you use, unless you wish to replace the entire vent. Instead, you’ll want to focus on finding a cap with the correct dimensions in order to ensure a good fit. Additionally, you’ll need to make sure the hinges on the new cover match up with your vent unit.

Replacing your vent cover is not exactly difficult, and only requires that you use a screwdriver or drill. That said, it is a bit too complicated to effectively describe the process in text. Therefore, we recommend watching this video to get an idea of exactly what you need to do.

Bathroom Vent Cover Upgrade

With your cracked cover replaced, you may also want to consider installing a MaxxAir vent cover. This cover is installed on top of your existing vent cover, allowing you to leave your vent open even when it’s raining without any moisture making its way into your RV.

As you can imagine, this is perfect for those who are without A/C on a regular basis, as it provides ventilation and makes hot rainy days much more manageable.

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