Roof Nails Sweating

It should to a degree.

Roof nails sweating.

Edge clip requirements depend on the relationship of the panel span rating to the actual distance between roof framing. If your roof deck or insulation is developing water droplets chances are your forehead is too. The nails will look white because they re frosted. Condensation is more apt to occur in climates where the average temperature is 35º f or colder.

Sometimes you can spot this if you climb up into your attic on a cold night. But with proper design and maintenance principles you don t have to sweat roof condensation issues. It can lead to roof leaks even if rain has not occurred for several days. If shingles get lifted or torn from high winds the damaged shingle exposes nails holding the shingle below it.

These nails will eventually rust. Spacer type panel edge clips are available from some manufacturers. Although moisture problems in the roof assembly can be due to waterproofing deficiencies don t neglect the effect of condensation. Use a 10d box 0 128 inch by 3 inch nail as a spacer to gauge 1 8 inch edge and end spacing between panels.

Remember the last hot and humid day you were sitting outside drinking a cold beer iced tea soda or glass of ice water. Condensation happens when moisture filled air contacts anything that is below the dew point temperature. Condensation is a common sign of inadequate insulation and or ventilation. Frost on nails in attic spaces may frighten you.

Metal gets cold faster than other items so condensation begins on metal first. Moisture that escapes into the cold attic from the rooms below often condenses on cold nails. Condensation in the home a warning sign. Frost on nails is frozen condensation.

Roof nail leaks can happen when roof nails have been loosened slightly from high winds or have simply pulled out over time. Roof sheathing panel spacing hints. When the attic heats up a bit during the day the frost melts and drips then the nails frost up at night again and so on. And just one rusted out nail can cause your roof to leak every time it rains.