Replies

1. 
   seeyou | Sep 03, 2007 05:25am | #1

   He said RZ was 30% less than copper

   I've not used it, but it's got very little scrap value. So, I'd guess that the net cost would be closer to copper, all things considered. I have very little copper scrap, but I recover about 50% of my initial investment when I sell my scrap.

   http://grantlogan.net/

    

   "he ot the placed closed down whyyy thhhattt nnooo gooodddd" - sancho

1. 
   Hiker | Sep 05, 2007 12:41pm | #3

   I have been tryin to do the math and cannot figure how you can get 50% on your initial investment if you do not have alot of scrap.  Do you scrap the stuff you remove and is that what you are including?

   I guess I was looking for long term durability at lower cost than copper.  I cannot stand galvanized as it does not seem to last very long down here.

   Bruce

1. 
   seeyou | Sep 05, 2007 02:18pm | #5

   cannot figure how you can get 50% on your initial investment if you do not have alot of scrap

   I get 50% of the initial investment of what I do scrap (which is as little as possible). I'd guess I get about 2-3% return on the total copper purchase. If the RZ is 20% less than copper intially, then the scrap prices would make RZ closer to 17% actually. There is some occasional tearoff, but it goes for about 30%-40% and I'm not including it.

   I'd get virtually nothing for the RZ scrap.

   Also, in the grand scope of things, a lot of the copper work I do is spec'd by an architect. So to do RZ work, I'd have to have double storage area (cu and rz), scrap bins, etc. In other words, there'd be shop set up expense and annoyance. Right now, my shear is set up with a sorting chute below it. When scrap drops, I can sort the good stuff out, but the little, unusable pieces drop into a bucket or box that I transfer to the scrap bins when it fills. I'd have to go thru that and get the rz out instead of just dumping it.

   And true, galvanized does not seem to last as long as it used to. http://grantlogan.net/

    

   "he ot the placed closed down whyyy thhhattt nnooo gooodddd" - sancho

2. 
   vinniegoombatz | Sep 05, 2007 05:36am | #2

    

   zinc is easier and cheaper to use than copper, more like lead flashing, but w/o the toxicity of lead       don't know ifn ur using it on a roof, especially wood roofing, but it kills the microbes that cause staining, moss or lichen growth     if you use a roll to cap off the ridge, and then horizontal course (or courses,depending on length of roof run) partially exposed at bottom of course of shigles, it will "wash" the roof w zinc and keep it clean     adds several years to wood roofs, good deal at the cost of material and labor today     does the same w asphalt roof prone to serious moss/lichen growth cuz of overhanging trees, shade, dampness     used it on a few problem asphalt roofs years ago where owners had short-lived roofs from stuff growing on them, didn't want to cut their ancient "trophy" trees      end of troubles

   don't know that u have to go w pricey stuff like rz     rolls and sheets of generic zinc flashing are available from the right building yards or metal dealers

   see if there is a Bradco Roofing Supply near u, or a good gutter supplier not out to gouge on prices, they can order zinc

    

    

    

1. 
   Hiker | Sep 05, 2007 12:42pm | #4

   Vinnie,

   Thanks for the info.  I will look into generic zinc as well. 

   Bruce