
Why metal roofs leak
Exposed-fastener metal roofs rely on rubber washers under each screw. Valley heat dries them out until they crack. Panels expand and contract, loosening screws. Laps open up, and rust starts where paint wears thin.
The fix
- Wash and remove loose rust
- Prime rusted areas
- Tighten or replace screws
- Seal every fastener, lap and seam
- Apply a reflective topcoat

Cooler barns and shops
A white coat on a metal roof can make a real difference inside a barn, shop or carport during a Valencia County summer.
When to replace
Rusted-through or badly bent panels need replacing first. See metal roofing.
Call (505) 499-5523 for a look at your metal roof.
Common questions
How long does a metal coating last?
Often 10 years or more with the right product and thickness.
Can you coat a carport?
Yes, metal carports are quick jobs.