Rusty Nails In Roof Vents

I had a new roof put on my house 3 years ago.

Rusty nails in roof vents.

What is up with this. The roof covering is an asphalt shingle and it appeared in good condition with no visible defects. The pattern may occur more on the cooler or north slope of the roof. Use a small trowel or caulk gun to apply 1 2 teaspoon of asphalt cement to the hole under the shingle.

Frost later melts off of these nails and drips onto the floor below. Rust stains on metal roofs including particularly steel roofs may be occur at nicks or gouges in the protective coating or they may be swarf stains caused by leaving the products of roof cutting shards shanks nails rivets or any discarded steel object on the roof surface. The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture. Over time your roof vent may become rusty.

Just make sure that you don t damage the shingles lifting them up. Fold a 4 by 2 inch piece of felt in half making a 2 by 2 inch square. Instead with a little effort you can help revive your vent and have it fight off the rust attack. I have seen this condition on roof coverings that were failing but not on shingles that are in good condition.

Remove nail lift shingle and apply a small dab where nail penetrated shingle then push the overlapping shingle down and your done. I would recommend doing this on a sunny day and after exposed to sun for a few hours. I can see the roofing nails that protrude into the attic are dripping wet. During the attic inspection i noted water stains around the roofing nails.

The roof has a ridge vent and soffit vents. Roofing nails are galvanized but add enough moisture and galvanized nails will rust. New decking on it all and dimensional shingles. Indications that your attic might have a ventilation problem include wet or compressed.

All of those things will add to the moisture in the attic and will rust any metal exposed there. Winter condensation on the nails even forming frost in freezing weather rusts the nails and stains the roof sheathing around them. I have noticed the last couple of winters that when i bring something down from the attic it has rust spots on it. Some of the nails appear rusty.

Press it onto the. The building codes and building science for.