Yep, also seal around the dryer vent pipe in the closet.I would go up on the roof, remove the vent caps and seal around the vent pipes.
I used caulk, spray foam may also work well.
Peace
Dave
Yesterday I noticed a sewer gas smell in bedroom. Any reason for that? No one had used the toilet in a while.
I sometimes have this issue, but it usually is after I eat mexican food or drink cheap beer. LOL, couldn't hold it back...no pun intended.
Hi CowboyOzee,i am a full timer. i have a 2014 3875 FB. from time to time i came home from work and the whole trailer is full of sewer gas. it is coming from the washer drain in the front bath. every drain seems to have a P trap except for the washer drain. i cant find one for it. is there one for it ? maybe it doesnt have one, design flaw?? in the past i have had my outside drain hose in a cradle that connected to the city sewer, allowing the water to drain completely from the holding tanks. the last time i had the sewer gas issue, i removed the sewer hose cradle and using blocks spaced about one foot apart and stacked about one foot high each. i created my our P trap outside to keep the sewer gas from entering the gray tanks from the city sewer and backing up into my coach thru the gray tanks up the washer drain with no P trap. this was done a few days ago and have not had any trouble since. maybe this will help both of us..........
I came back to the trailer one day and thought "man, this sewer gas smell is terible".i am a full timer. i have a 2014 3875 FB. from time to time i came home from work and the whole trailer is full of sewer gas. it is coming from the washer drain in the front bath. every drain seems to have a P trap except for the washer drain. i cant find one for it. is there one for it ? maybe it doesnt have one, design flaw?? in the past i have had my outside drain hose in a cradle that connected to the city sewer, allowing the water to drain completely from the holding tanks. the last time i had the sewer gas issue, i removed the sewer hose cradle and using blocks spaced about one foot apart and stacked about one foot high each. i created my our P trap outside to keep the sewer gas from entering the gray tanks from the city sewer and backing up into my coach thru the gray tanks up the washer drain with no P trap. this was done a few days ago and have not had any trouble since. maybe this will help both of us..........
To understand this odor better. Its hydrogen sulfide gas. Its much heavier than air. High levels of this gas can also make you sick or even death if it gets over 500ppm. I have never had any smell in any of my campers and I think its because we use a lot of water in grey and black tanks. Dilution is the solution is what we say at work. Yes, Im in the wastewater treatment business.
I had this problem with the smell in the bedroom area and it really got bad and traveled throughout the rig. After a lot of testing and exploring it turned out just like an earlier post here by hoefler suggests.
It was the under counter top air admittance valve that went bad. My rig was only two months old when this started to happen, who would have thunk it. There is a rubber like flapper valve inside that plastic housing on top of a stand pipe under the bathroom sink and countertop, and it must have dried out causing it to malfunction. A cheap fix for under $4 with a trip to Ace Hardware. It does not have to look the same as the one from the factory which has a little larger screw in housing. It is called a 1 1/2" trap vent by B&K part#995-001 and just screws into the same fitting as the factory one is screwed into.
This Valve
Will Heartland fix this "factory defect" outside of warranty?