As soon as water shows up inside you ll know where the problem lies.
How to find a leak in a rv roof.
Start off by taking a look at your rv s ceiling.
This being said not all roof leaks show up on the ceiling.
The air conditioner on the roof is sealed with a foam rubber gasket placed underneath the unit.
And not just on the roof but at seams vents and around windows.
You will see bubbles where the leaks are.
An easy way to find leaks is to pressure test the coach trailer.
Start your water test from the ground up.
The easiest place to start an rv roof inspection is from the inside.
Often old tar or patching will flake or lift off.
If you brush the water off briskly you can follow up with a hand towel and wipe the area dry.
Once you locate the source of the water mark the area.
The force of over pressurizing will allow you to use a bubble solution to find potential leaks on the outside skin of your class c motorhome.
Basically while you pump air into the closed vehicle with a blower or fan spray the outside seams with soapy water.
This is a simple process of creating the condition of increased air pressure inside an rv.
Water will reflect light so bring a flashlight along.
Scrape or brush off any remaining debris or old roof patch material.
The caulk around the storage compartment doors is a likely leak spot.
If you have an attic the easiest way to spot the leak is to up there on a rainy day.
Be sure to run water around that a c as it can migrate to other spots under the rubber roof.
Sometimes it is raised a bit on the edges and allows water to seep underneath.
The goal is to find the leak before the entire roof goes bad.
If you notice any new or old water stains then you know you have a leak somewhere.
In order to locate the leak you can have an rv shop perform a smoke test or you can conduct an air pressure test at home.
Feel around under the mattress pad and in all of the corners for signs of moisture.
I have long understood the concept of over pressurizing a rig.
Check the storage compartments check for any signs of water damage or moisture inside your storage compartments.
Go in one direction and with hands check from left to right for soft spots bubbles water damage and erosion.
Circle any spots and repairs can be made with the best sealant by epdm rv roof repair.
Check the cabover if you have a class c rv this is a classic leak area.