Metal Roof Coating - Do not coat your roof before watching this video
Channel: Flat Roof Doctor
Date: 31/10/2020

Turbo Poly Seal https://bergstromm.com/
How to repair the flashing on a leaky flat roof.
Follow these steps:
1. Remove all old caulking and tar that was used to seal the flashing
2. Use an angle grinder with a hard-wire steel cone brush to  remove about five inches of paint on the brick or cement wall above the metal flashing
3. Wipe the metal flashing thoroughly with lacquer thinners to remove any residue of silicone from the metal
4. Use masking tape to seal about three inches on the wall above the metal and also 2 inches below the grove on the metal. (this is for making it look clean when done.)
5. Apply one coat of Turbo Poly Seal, covering the entire area between the two masking tapes.
6. While wet, embed the Polyester Fleece into the Turbo Poly Seal
7. Apply a coat of Turbo Poly Seal to cover the entire fleece
8. Wait 10 min and then remove the masking tape.
8. After a few days, the Turbo Poly Seal flashing can be painted with urethane-based paint.
Another Video on Coatings - https://www.youtube.com/watch?v=tEBIPqEvn7A
Silver Coating, How to use it - https://www.youtube.com/watch?v=MrQEQcrjwFI&t=8s
This will help you to understand Why it is not a good idea to Coat a Metal Roof. Also, How to repair holes in a metal roof and make it leakproof with Super Silicone Seal and Silicone Patch.
This is a detailed process on how to prepare and clean the screw before applying a sealant.
Super Silicone Seal - https://bergstromm.com/product/super-silicone-seal-roof-repair-kit-5-feet/
Silicone Patch - https://bergstromm.com/product/silicone-patch-2-gal-pail/
FTC Affiliate Disclaimer -  I get commissions for purchases made through links in this post.

0:00 Why not coat a metal roof
1:32 Screws rust due to coating
3:54 Clean the screws and seal them
5:06 Using an angle grinder 
6:31 How to patch a rusted hole
8:20 Showing the results the next day 
9:41 Seal screws using Super Silicone Seal
10:49 Showing the girl that does it all