Attic Nail Stains

If enough of it forms and settles on the attic floor it will eventually migrate down to your ceiling.

Attic nail stains. This usually occurs on the underside of the roofing structure. Even in warm or dry weather you often will see stains around roofing nails penetrating the roof sheathing or condensate drip spots on the attic flooring or insulation left photo below. Stains and rust around protruding nails are strong evidence that there is a high level of moisture in the cavity surfaces. This is sure evidence of a condensation problem.

This happens due to trapped damp air often in the late fall or early winter. One good way to check if this is going on is to inspect the nail heads in your attic. For over 80 years california paints has been a leading innovator in the paint industry. Looks like either condensation encouraged mold growth or less likely the coating on the roofing nails migrating into the wood.

When this humid relatively. This is caused by moisture condensing on the roofing nails and dropping to the surface below. Both water and air leaks commonly occur near features that penetrate the roof sheathing. On attic mold visible on pine tongue and groove roof sheathing near the building eaves.

The mold shown in the attic photographed above was identified as aspergillus sp. Also notice the condensation stains at the shingle nail more evidence of a history of attic moisture which was a factor in this mold growth. If it goes away it is mold. California paints produces the highest quality interior paint exterior paint industrial and specialty products.

In the summer rust can be seen on the tip of the nails and sheathing around the nail protrusion. Random stains on your ceiling with no evidence of roof leakage usually mean that you ve got a condensation problem in your attic. During the winter moisture is present if there is frost on the nails. Get a garden sprayer hit it with a two cup to one gallon of water bleach solution on a few spots and see what happens.