Example Project: Repair rusted windshield channel after removing windshield for replacement
Remove windshield and rubber weatherstrip
Remove as much of the old coating and adhesive as possible from the area
Sand and wire brush the rusted areas removing any loose rust
Mix Cleaner Degreaser with one or two parts of water and apply to the entire windshield channel scrubbing it in with a small brush then rinsing off with water or using a clean wet sponge and clean towel.
When dry apply Metal Prep to the area and keep it wet on the surface for 20 – 30 minutes. Rinse or use a clean wet sponge and clean towel several time to be sure you have removed all of the Metal Prep. As the water dries the bare metal areas will flash rust and when completely dry a small amount of white powder will remain of the surface. This if completely normal and the correct surface for the POR-15 Rust Preventive Coating.
If the area is just rusted and no rust holes require repair the first coat of POR-15 can be applied. Once the surface is completely dry brush on the first coat of POR-15 Rust Preventive Coating. A second coat can be applied when the first coat has just dried and still has a slight finger drag or has completely dried and has been sanded. Epoxy putty can be mixed and applied to any pitted areas when the POR-15 still has a slight finger drag or has completely dried and been sanded. The pitted areas may require a wire brush the scratch into the pits for the putty to adhere correctly. Once the Epoxy Putty has been sanded and the repair complete you can apply a final coat of POR-15 over the putty if you choose.
If rusted holes require repair, I would suggest using a small piece of our Power Mesh, a thin fiberglass mesh, and place it into the wet POR-15 as you would repair a bicycle inner tube. Using the tip of the brush smooth out the mesh and any air bubbles that may be trapped under the mesh. Add a second layer if necessary. If you have access to the back of the area, I would add either a layer of mesh or our POR Patch to the area for additional strength and protection. Be careful not to make the repair to thick so you will have trouble fitting the new windshield rubber gasket into the channel. Once everything is completely dry sand the repair smooth and your ready to install the windshield.