Using Roofing Tar For Undercoating

Probably not a good idea.

Using roofing tar for undercoating. Then the roofing tar will fall out. And can you imagine how hard it would be to take off in a few years. Use the broom to clean your roof before applying tar roofing. When there is no debris left you are ready to apply tar to the roof.

Undercoating spray can be purchased as a diy product but it s tricky to apply so it s best to use this method at the dealership on a new vehicle. It s a true temp fix as eventually the entire metal under the patch will rust away. The sunlight will thin the tar and make it easier to apply. Use por 15 and fiberglass for a permanent fix.

The coating itself is a tar like substance that sticks to the undercarriage components and acts as a barrier to resist salt moisture oxygen and other items that lead to corrosion. You can use a black roofing tar cement asphalt in a gallon container. Problem with roofing tar is the metal continues to rust. Roofing tar takes a lot of heat to put on slops on with a mop gets soft in the summer and can crack in the winter.

I ve got photos attached of my gold award winning undercarriage on our 69 mach1. You mix the black roofing cement asphalt with mineral spirits to get a brushable consistency and just brush around all the areas on the undercarriage that ford originally brushed it on. Start in the corner furthest from your ladder. Using small amounts at a time apply the roofing tar with your roller in short and smooth strokes.