Rusty Nails In Attic

As a last resort install a dehumidifier.

Rusty nails in attic.

Stains on the insulation and rusty nails above the stains in the roof sheathing. Usually rusty nails are something that people try to avoid but there are certain circumstances where you d want a nail to be rusty. Excessive attic moisture condenses on the cool metal surface of the roofing nails causing corrosion or rust on the nails and stains on the surrounding wood materials. Power attic vents may be needed if humidity is too high in the attic.

To create rusty nails you can use hydrogen peroxide vinegar and salt to rust your nail or you can. The moisture caused by condensation on the inside of the attic can also rust things like plumbing heating and venting duct straps to rust and break. These same condensation points the roofing nails will often map exactly the drip stains found on the attic insulation or attic floor below each nail. Indications that your attic might have a ventilation problem include wet or compressed 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 at the roof edge.

All of those things will add to the moisture in the attic and will rust any metal exposed there. Without consistent air flow in your attic moisture will linger and begin to rot the wood which can result in roof damage. For instance rusty nails can add a rustic feeling to your interior decor or to an arts and crafts project. These nails are rusting due to the living area heat breaching up through the ceilings and into the attic cavities during the winter months from inadequate insulation.

Roof is new 5 yrs over an old layer. Is this a sign of poor ventilation in the winter. Once you have the humidity in your house under control repair the worst of the drywall nail pops apply a stain blocking primer to the walls and ceilings to cover the rust stains and topcoat with latex wall and ceiling paint. I found these signs in an attic today.

If you find this then you need to look further into improving your attic ventilation performance. Would this be mold starting at each nail site and is this black nails due to poor ventilation or old roof leaking at all the nail penetrations. Ive seen roof shingle nails get rusty due to poor ventilation as this attic had lousy ventilation but never black and the sheathing turn black around the nail. Even if there are no added problems caused by improperly vented equipment moisture can penetrate into the attic space and begin the rusting process if the.