Mike Lamb

Good points all. Thank you.

I know. It should be a GFCI.

Thanks, Bill.

After some research you are probably right (as always). Cast stone.

It could be cast stone. I don't know how to tell the difference. Would repair or maintenance be different? And what should be done about this. Thanks, Bill.

The more I look at the other photos, the same thing is happening at the limestone facing even up at the roof line. Would sealing the stone with an appropriate sealant help slow the problem?

How should I evaluate the streaking beneath the south windows of this bldg. and then beneath the through-wall flashing?

I am wondering what advice I can give on the exterior limestone of this 17 year old building which is noticeably wearing away (spalling?). I’m not sure of the cause. Traffic pollution? The wearing away is not just confined to the lower areas.

Thanks, Bill. No good pictures of the piping but your link on boilers is enlightening.

This is the underside of a cast iron steam boiler. The iron is corroded and rusting. The boiler was shut down for summer. Should this be evaluated further with the boiler running, or not so important? Peerless year 2012.

Thank you, Bill.

What is this component attached to a boiler that is being used for potable water in a multi-unit building?

I assume Bill recommends replacing the chrome tail pieces because it is already pitting/rotting through. All the chrome drains you buy at the hardware store or big box are cheap quality and corrode fast. Stick with PVC so you're not going back to your moms for more drain issues in the near future.

Yes. Probably TV antennas but they were at practically every outlet receptacle even in hallways. Thanks.

I don't think I've seen this before. Any help? Early 1960's construction all electric building.