How To Prevent RV Sewer Line From Freezing

We have hit the COLD weather, with the recent blast of arctic air and cold wind chills that has blasted across the US this winter. To prevent the RV sewer hose from freezing, beyond skirting the RV, we have now added heat tape to the sewer line and redone the heat tape on our water line. We have tested this sewer line heating method for a couple nights now, and it has worked perfectly for us, and it seems to be working for others as well.

Prevent RV Sewer Line From Freezing With Heat Tape

We purchased outdoor plug extensions with triple outlets on them. We then wrapped the sewer lines with a hot water heater blanket.

We chose this because of the plastic exterior, a smaller insulation thermal blanket option complete with a ripstop plastic coating on the outside. This insulation blanket will help prevent the RV sewer line from freezing up by helping maintain the temperatures.

The electric heat tape was provided inside the blanket wrapped around the sewer pipe. We left the blanket a bit loose for internal air space, although we tried to seal the opening pretty well. We split the blanket to get 14 linear feet out of it, leaving us excess material.

In anticipation of winter, RV water tank and sewer lines are as short as possible by where we parked the rig.

RV Sewer Line Insulated for winter RV Camping

We added three trash bags that were cut to make sleeves the tucked the excess in the sewer hose ladder. We did this as an extra moisture barrier as we have been getting “feet” of snow.

We also wrapped the RV water line with tube insulation for pipes because it had been so cold. We realized a leak that we fixed immediately with a new set of washers. One with the screen that is on your RV, as well as a new hose due to a coupling that would not seal.

Any leaks, however small, will freeze a line or hose if ice is allowed to build up. We used the (water and gas line type) black foam hose insulation with split, found at hardware stores and your local building supply.

The little green box on the water line is provided by our RV park. It has spray insulation in it and a bulb mounted to the inside with wire coming out the outside.

It is another great Winter RV Camping idea, but we have heat tape and insulation on the entire line all the way to the ground, so only use the box as an additional cover to the RV Park water faucet part of the line. We have the line heat tape wrapped all the way to the ground and well insulated, so the RV park line is protected with our water hose anyway, but we added it because they requested it.

Then use aluminium tape to coat as the sun damages this material easily. We also applied the heat tape for the sewer lines, then added hot water tank sheet material by cutting the “hot water tank” blanket sheet down the middle and creating about 14 feet of length that way. We leave tanks open, so nothing is held to freeze, and with the under side heated with bulb.

The wind chills will not affect the exterior lines because of the heat tape and insulation on both the water and sewer. The heat tape does enter the skirting for a foot or so to keep that transition warmed. With the bulb under the tank lines, they too seem unaffected at this point to these extreme temperatures.