Rusty Nails In Roof Vents

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

Rusty nails in roof vents.

Roofing nails are galvanized but add enough moisture and galvanized nails will rust. Over time your roof vent may become rusty. Remove nail lift shingle and apply a small dab where nail penetrated shingle then push the overlapping shingle down and your done. The roof has a ridge vent and soffit vents.

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. During the attic inspection i noted water stains around the roofing nails. Instead with a little effort you can help revive your vent and have it fight off the rust attack. I would recommend doing this on a sunny day and after exposed to sun for a few hours.

Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. 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 roof covering is an asphalt shingle and it appeared in good condition with no visible defects. I have noticed the last couple of winters that when i bring something down from the attic it has rust spots on it.

The building codes and building science for. Some of the nails appear rusty. Fold a 4 by 2 inch piece of felt in half making a 2 by 2 inch square. Use a small trowel or caulk gun to apply 1 2 teaspoon of asphalt cement to the hole under the shingle.

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. New decking on it all and dimensional shingles. Indications that your attic might have a ventilation problem include wet or compressed. Just make sure that you don t damage the shingles lifting them up.

Winter condensation on the nails even forming frost in freezing weather rusts the nails and stains the roof sheathing around them. You to have the vent replaced. All of those things will add to the moisture in the attic and will rust any metal exposed there. I can see the roofing nails that protrude into the attic are dripping wet.

I have seen this condition on roof coverings that were failing but not on shingles that are in good condition. Frost later melts off of these nails and drips onto the floor below.