Metal Roofs

Few materials can match the durability and strength of metal roofing. But even the best materials can fail. Problems that can affect the performance and longevity of a metal roof can include; thermal movement, wind, structural damage, failing sealants and butyl tape, improper installation of screws and detailing, corrosion, etc. Whatever the cause of the failure, Liquid Rubber products should be a key part of the solution!


  1. 1. Inspect the roof for missing/damaged panels, loose or missing screws/bolts, decayed or missing butyl strips between panels, and that vents, skylights, etc, are securely installed.
  2. 2. Ensure the surface is clean and dry and free of oils or other contaminants. Clean using a pressure washer, degreaser, or other detergent as necessary.
  3. 3. Remove silicone, coal tar, heavy scale, and loose/flakey paints or coatings if any.
  4. 4. Tape off or otherwise mask area’s you wish to protect from the coating.
  5. 5. Bridge joints, seams, around protrusions (vents, skylights, etc) using Liquid Rubber Seam Tape. Apply a coat of your selected waterproofing over the Seam Tape, going at least 2 inches beyond the edges and allow to dry. Dab screws, bolts, or other sharp protrusions with your selected waterproofing or a compatible caulking.
  6. 6. Apply rust primer or rust convertor over areas of light rust to encapsulate and reduce bleed through. (If your selected waterproofing is MetalSafe, this step is not necessary).
  7. 7. Once rust primer and detail coats are dry, begin your field application. Apply your selected waterproofing to the entire surface. Allow adequate drying time and inspect for pinholes, blisters, etc, and repair as necessary before applying your next coat. Talk to your Liquid Rubber technical rep to determine which product suits your application.
  8. 8. Appropriate products for metal roofs include: Spray grade – MetalSafe InstaSet B-300, SealSafe InstaSet B-200. Brush grade – MetalSafe S-300, SealSafe S-200. MetalSafe PU-100 and MetalSafe A-205 can be brushed/rolled or sprayed (with the appropriate sprayer).

Case Studies