Rusty Nails In Roof Vents

You to have the vent replaced.

Rusty nails in roof vents.

The roof has a ridge vent and soffit vents. Insulation rusty nails or rust spots that dripped onto your insulation blackened plywood mold or mildew inside your attic curling or cracking shingles uneven snow melt and icicles. Remove nail lift shingle and apply a small dab where nail penetrated shingle then push the overlapping shingle down and your done. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals.

Frost later melts off of these nails and drips onto the floor below. What is up with this. New decking on it all and dimensional shingles. 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.

I would recommend doing this on a sunny day and after exposed to sun for a few hours. 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. Winter condensation on the nails even forming frost in freezing weather rusts the nails and stains the roof sheathing around them. The pattern may occur more on the cooler or north slope of the roof.

All of those things will add to the moisture in the attic and will rust any metal exposed there. Indications that your attic might have a ventilation problem include wet or compressed. Some of the nails appear rusty. During the attic inspection i noted water stains around the roofing nails.

Use a small trowel or caulk gun to apply 1 2 teaspoon of asphalt cement to the hole under the shingle. The building codes and building science for. Instead with a little effort you can help revive your vent and have it fight off the rust attack. Fold a 4 by 2 inch piece of felt in half making a 2 by 2 inch square.

The roof covering is an asphalt shingle and it appeared in good condition with no visible defects. I have seen this condition on roof coverings that were failing but not on shingles that are in good condition. Over time your roof vent may become rusty. Just make sure that you don t damage the shingles lifting them up.

I have noticed the last couple of winters that when i bring something down from the attic it has rust spots on it. Roofing nails are galvanized but add enough moisture and galvanized nails will rust.