Performing a little corrosion control on the rear bumper of my RV.
Well, they say that the only thing that works on a old boat is the owner. I am learning that this is true for RVs as well. In this maintenance task, I'll be performing a little corrosion control by painting the inside of my RV's rear bumper... where the sewer hose is stored.
There is enough rust inside the tube that it is staining the outside of the sewer hose with rust. For any brown material that gest on the sewer hose, I want to know where it came from - so eliminating the source of rust is an effective way to accomplish that goal.
The rust inside the tube is not at the level of weakening the bumper, but rather - this is a cosmetic repair.
The one thing we did not want to do is to clean the tube by water as I didn't want to wait a day for it to dry. So we used an air compressor to blow out the tube, followed with a stiff brush taped to an extension pole, followed by a couple of rags, and finally, blowing out the tube with compressed air a second time.
At that point, we were ready to paint. While I didn't do it, I highly recommend using a pair of disposable gloves as this can be a real mess.
I used Rust-Oleum Gloss Black Enamel, which should inhibit further rusting.
Painting the tube was accomplished with a 3" roller and an extension pole, followed by a corner "brush". The combination of these two tools ensured complete coverage inside the tube. You can pretty much tell by feel when you have coated the entire inside of the tube. As well, shining a flashlight in the tube and looking in the tube from the distant end confirms glossy coverage of the entire inside. Use painter's tape to keep from making a mess to the outside of the tube.