Can NuMetal be applied to KBS BackBone after being painted with RustSeal?  I have a couple of nickel sized rust holes in a non-critical area.  Your directions suggest adhering the KBS BackBone mesh with RustSeal.  That's fine,, but can I then cover everything with a thin coat of NuMetal?  These small holes are in an area that's tough to reach should I have to repair with new sheet metal.

Absolutely. Here is how we suggest to go about it but you can take the direction given below and apply it to your specific project.

Measure and pre-cut a piece(s) of the BackBone Mesh to fit the area(s) making sure the mesh extends at least 2-3 inches beyond it. Apply a thin coat 2mils of RustSeal to the entire prepared surface including the large holes and pinholes on both sides of the metal. When this first coat of RustSeal is dry to the touch, apply a second thin coat 2mils of RustSeal only to the areas you will be using the BackBone Mesh. When this second coat of RustSeal is still wet to tacky, embed the BackBone Mesh directly into it and mold it. If the area is odd shaped and requires a lot of pressing and molding, however, wait until the coating is "tacky" before applying BackBone. Remember to always wear gloves and not to apply too much paint as it will make the BackBone application more difficult.

When BackBone and Rustseal has dried (approx. 3-8 hrs. later), apply another thin coating 2mils of RustSeal over the entire area reinforced with the BackBone Mesh. Within 6 hours of this last coating curing, mix NuMetal Epoxy Putty as directed and apply to repaired areas for smoothing or other parts that need filling. When working with NuMetal, have a bowl of water nearby to dip your fingers into for smoothing out the putty. This will help eliminate or reduce the need for future sanding. NuMetal Epoxy Putty will cure in approx. 6-8 hours at 75F. You may give the area a light sanding after curing, but be careful NOT to sand through the coating! Afterwards, wipe down the sanding dust from the surface with a clean cloth, and apply a final coat of RustSeal. This final coat must be applied to the repaired areas, but may also be applied over the entire project area if you choose.

Please let us know if that helps and if you have any additional questions. Thank you for choosing KBS Coatings.