Repairing the roof on an RV is essential to preserving the property value of your investment. There are many reasons a repair may need to be performed on your roof; for the most part, it is usually due to a leaking , damaged or visually unappealing roof. A leaking roof is a major health hazard: Damage to the insulation can lead to a mold problem, and damage to the wiring can lead to a potential fire risk.

Instructions
Things You'll Need:

* Drill
* Caulking
* Caulking gun
* Heat gun
* Staple gun
* Utility knives
* Tape measure
* Phillips-head screwdriver
* Flathead screwdriver
* Visual recording device

1.
Step 1

Park the RV in an enclosed garage or warehouse where it can be disassembled out of the weather. The space should have enough room to construct a new replacement roof on the ground next to the RV, and adequate ceiling height to work on---and replace, if necessary---the roof of the RV.
2.
Step 2

Remove all fixtures from the rooftop such as roof vents, plumbing vents, A/C vents. Use the heat gun to soften the roof coat around stubborn fixtures to avoid any damage. Remove all of the edge moldings from around the rim of the roof. Remove all staples that hold the metal roof to the sidewall edge. Remove the RV roof metal by rolling it up if you will be reusing instead of replacing.
3.
Step 3

Remove insulation and discard if it is wet. Videotape, take photos, or make a written diagram on a poster board of all exposed wiring running through the roof so that you can replace it later, and then remove all of the wires. Remove all fixtures found on the interior such as light fixtures. Remove all screws, nails, or fasteners found on the roof assembly and then remove the roof.
4.
Step 4

Remove weakened or dry rotted wood members or build a completely new frame that copies the original framework. Attach new ceiling panels to the existing or completely new framework with glue and staples. Cover the joints between the panels using slide-in battens. Mark the spots for easy replacements of all fixtures removed in the beginning such as roof vents, plumbing vents and A/C vents, and then drill holes for wiring.
5.
Step 5

Lift and place the new roof on top of the RV and attach it to the side walls and interior cabinets, copying the original pattern of the manufacturer. After the new roof is attached, re-install all wiring and interior fixtures. Test fixtures to insure they are functioning properly. Re-install insulation and roof metal. Re-install moldings and all rooftop fixtures using putty tape. Recoat fixture edges to seal in.
6.
Step 6

Re-install any additional interior and exterior accessories.