Roofing

Rather than fighting metal’s thermal conductivity directly, the better approach gives condensation somewhere safe to go once it inevitably forms.

A wood or asphalt roof deck insulates itself somewhat by nature. Metal transmits temperature straight through, which is exactly the problem here.

The organism that stains asphalt roofs is feeding on the shingle itself. On metal, it has nothing to eat but whatever dust has settled on top.

Moss doesn’t fail to grow on metal because metal is somehow toxic to it; it simply can’t find anywhere to grip onto a clean, smooth painted surface.

Pressure removes what’s sitting on the surface. A proper cleaning solution actually kills what’s growing there and lifts what’s chemically bonded to it.

The rule is simple once you know it: always spray in the same direction water naturally flows off the roof, never against it.

A metal roof’s wind rating means nothing if the installation underneath it doesn’t actually achieve that rating in practice, and the two aren’t automatic.

A dent isn’t automatically a covered loss. Whether a hailstorm actually compromised your roof’s function is a specific, well-defined legal and technical question.

Plywood decking is exactly what most metal roofs are designed to sit on; the detail that actually needs attention is what goes between the two.

The trick isn’t skipping tear-off entirely; it’s adding a deliberate air gap between the old shingles and the new metal so trapped moisture has somewhere to go.