What Causes This To Happen ?

easy sider

The siding has vertical discoration that follow the stud lines. This job is 20 yr. old, Alcoa Super V D-4 in Desert Tan.

easy sider

Leo G

Nails are rusting under the clap board

__________________
Sawdust Follows Me Everywhere

http://lrgwood.com
Custom Cabinets in Hartford County Connecticut

rbsremodeling

The siding is having its period?

__________________

mdshunk

Poltergeists

SLSTech

To close together to be studs - unless they are 10" or 12" OC (Based off the balusters & elect meters)

I agree that water is part of the issue but exactly where - peel a strip off & look at the nails, are they rusting or is it coming from higher up the wall, stains coming from the weep holes maybe?

__________________
Alabama Full Service Remodeling, Renovation, and Preservation by SLS Construction
Certified Energy Efficiency Audits, Ratings, Modeling, Verifications, & Consulting
Residential, Commercial, & Industrial Infrared Thermography Scans

easy sider

The back side of the siding looks fine. The nails are 2 " eg roof with no discoloration. The siding is nailed to studs under sheetrock. This is only happening on walls where the electric meters and utilites are located.

Thaks
Bill

SLSTech

Are both these sides the ones with gutters on them???

The siding is nailed to studs under sheetrock.

__________________
Alabama Full Service Remodeling, Renovation, and Preservation by SLS Construction
Certified Energy Efficiency Audits, Ratings, Modeling, Verifications, & Consulting
Residential, Commercial, & Industrial Infrared Thermography Scans

mdshunk

Common when the houses are close together and they're going for an exterior fire rating. Normally yellow exterior sheetrock.

easy sider

All end walls with power meters are having this issue. No problems with the front or back walls noticed.

Thanks
Bill

house bldr

I have seen similiar situations in a house after a fire, I'm told heat magnetizes the nail heads causing smoke particles ect. to stick to them.Don't know if this could be related?

mdshunk

That brings me back to the poltergeist theory.

loneframer

I'm thinking maybe dirt collecting as a result of thermal bridging. Did you ever notice on a dewey morning, you can see every framing member through the siding? The studs transfer heat more readily than the insulated stud bay. Possibly causing static electricity?

Just a theory.

Paulie

which way does the extrior wall face - North, south,... Also does any of the other houses show same symtoms?

easy sider

This is an appartment complex with the buildings random across the property. Most walls are not facing south. All end walls on all buildings are doing this. The wall is sheet rock on both sides with the exterior wall having house wrap and vinyl siding. The buildings are out of waranty as the Alcoa waranty is prorated to 10% after 15 years for multi-family dwellings.

Paulie

OK here's my theory, I agree it's thermal bridging. Look close at where the problem is NOT. It is not under the eves and it is not where the floor joists are for 2nd level, that big streak ends and picks up between the floors. Also look at where the discolor is on the double four. It looks to me it is where the dew would drip off the edge from above.

Red color usually means iron oxidizing, but there are a lot of pollens that are red, are there many tree's near?

Another question, does the stain come off with maybe something like goof off or CLR?

I'm thinking the electricity has nothing to do with the problem maybe the builder did something different on those ends because of the electric. Just a guess.

loneframer

I'd bet where the darkest line is, there is an uninsulated partition, which would allow more heat loss. Look at the layout, every stud, partition is not on 16" center.Those stains start at the top of where the nailhead would be closest to the vinyl, point of contact for thermal bridging.

Paulie

I got to thinking about it and there is a possibility that the electric has something to do with it. All electric current produces a magnetic field. Iron is a ferris metal that is attracted by a magnet. Over 20 years the iron has collected on the siding. The dew from thermal bridging picked up the iron, dripped to the next panel down, then dried up in the afternoon sun over and over til you got a stain.

olyteddy

And if we used Direct Current, as Edison wanted originally, the magnetic field would remain. AC changes direction 60 times a second and should cancel out the magnetic field. I agree with the thermal bridging theory, but perhaps the briging occurs there because there's less insulation because of pipes or conduit or bundles of wire.

Paulie

OK I read back through the post and he said that it was only the ends with electric then before that he said all end walls. If it was only walls with electric then its something builder did or something with the electricity.

By the way Tesla was the man, electricity distribution with NO wires!