Rudy, Actually I would recommend a neutral cure silicone, especially with metal and glass. They have a longer lifespan than urethanes. You can also consider weather sealing with a low modulus sealant or structural glazing with a higher modulus. Depends on your situation. Good luck Eric Hammarberg, Assoc. AIA Vice President Thornton Tomasetti 51 Madison Avenue New York, NY 10010 T 917.661.7800 F 917.661.7801 D 917.661.8160 [log in to unmask] -----Original Message----- From: Rudy Christian [mailto:[log in to unmask]] Sent: Tuesday, October 03, 2006 2:15 PM To: [log in to unmask] Subject: Re: [BP] And now for something completely different Thanx Eric, Can you be more elaborate about the glazing sealant. I'm aware silicone is a bad no-no. What sealant(s) would you recommend? -----Original Message----- From: The listserv that Ruth calls "Pluto's spider-hole." [mailto:[log in to unmask]] On Behalf Of Hammarberg, Eric Sent: Tuesday, October 03, 2006 1:20 PM To: [log in to unmask] Subject: Re: [BP] And now for something completely different In my experience either glazing putty or glazing sealant will work but I think sealant is better since it is elastomeric and can absorbe the different expansion rates of the steel and glass. The various pieces of formed sheet metal are usually done by the shop fabricating, or in your situation, restoring it. Here in NYC there are still a bunch of guys making sheet metal skylights. Eric -----Original Message----- From: Rudy Christian [mailto:[log in to unmask]] Sent: Tue Oct 03 12:35:27 2006 To: [log in to unmask] Subject: [BP] And now for something completely different ...unless of course I haven't been paying attention again. Our crew is in the process of stripping years of tar roof coating off of a wonderful old four hipped skylight on the 1891 building we purchased in Wooster, OH. We had talked to the local glass shop and they want to replace it with a $17000 aluminum framed piece of modern roof window, but the more our guys discover as they peel off years of "built-up maintenance" is that this thing is really built well and worth preserving. Here's the question: The frame is steel (iron?) with tin (galvanized?) applied everywhere that the glass is supported. The frame has tin pieces formed to cover the main frame that are all soldered at the intersections to form a drain system both inside and out which channels both rain water and condensation out through the tin "gutter" around the edge of the flashing (It is curb mounted on a low pitched flat roof.) The glass panels are held in place by formed snap on tin caps that grip the frame to hold the panels in place. Actually here are the questions: Does it matter what kind of glazing compound we use since it is going on tin tracks instead of wood? Also, does anyone know if the formed cap stock is still available since the process of removing the glop is a time consuming nightmare? Just thought I would ask the wisest people I know instead of the retired guy at Lowes. In over my head (again), Rudy -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: http://listserv.icors.org/archives/bullamanka-pinheads.html -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: http://listserv.icors.org/archives/bullamanka-pinheads.html <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> The information in this email and any attachments may contain confidential information that is intended solely for the attention and use of the named addressee(s). This message or any part thereof must not be disclosed, copied, distributed or retained by any person without authorization from the addressee. If you are not the intended addressee, please notify the sender immediately, and delete this message. <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html> -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> The information in this email and any attachments may contain confidential information that is intended solely for the attention and use of the named addressee(s). This message or any part thereof must not be disclosed, copied, distributed or retained by any person without authorization from the addressee. If you are not the intended addressee, please notify the sender immediately, and delete this message. <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html>