Replies

1. 
   philarenewal | Apr 23, 2006 03:26am | #1

   EPDM or modified bitumen.

   Lots of flat roofs in my town.  Modified bitumen seems the most commonly used.  EPDM seems the most commonly recommended.  Go figure.

    

   "Let's get crack-a-lackin"  --- Adam Carolla

2. 
   Sphere | Apr 23, 2006 03:29am | #2

   We use Mule Hide  and glue with latex when it is warm, solvent when near freezing.

   Spheramid Enterprises Architectural Woodworks

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1. 
   Piffin | Apr 23, 2006 05:16am | #3

   Mule hide is a brand name. They have lots of products.I vote for EPDM whenever I can. modified is only a 10-15 year product and is dangerous because of the torch work.The OP heard a suggestion locally that sounds like a peel'n'stick. I'd be checking the literatured to be sure it will handle sunlight exposure. There are mineral coated peel'n'stick products OK for a small area like a porch 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

1. 
   philarenewal | Apr 23, 2006 05:43am | #4

   Hey Piffen, GAF makes a peel n stick SBS product (Liberty cap sheet) with the same guarantee as their other comparable SBS products (only 10 years, but not bad for a flat roof).

   I've used it instead of felt paper under siding on a vertical job that absolutely, positively could not allowed to ever leak (long story -- I'll bore everyone with sometime I'm sure).*  Cost is about the same as mop down SBS, around $50/square small quantity (plus you don't have to buy glue).  Handles the same and sure does stick.

   Never tried on an actual roof yet (haven't done one since I heard of it).  I'm considering giving it a try.  Hate the glue and refuse to use the torch (like you said, fire hazard -- heard too many horror stories from roofing buddies).

   * and before everybody get on me for no vapor transfer, it was a very small section in relative terms to the whole wall -- like I said long story.

   "Let's get crack-a-lackin"  --- Adam Carolla

   Edited 4/22/2006 10:51 pm ET by philarenewal

2. 
   seeyou | Apr 23, 2006 12:35pm | #6

   Slight hijack- you ever used any TPO? We've done a couple lately and I kind of like the heat welded joints. Downside is $500 for the welder.Why is it every time I need to get somewhere, I get waylaid by jackassery?

   http://grantlogan.net/

1. 
   Piffin | Apr 24, 2006 12:04am | #13

   No - I always liked the concept of wewlded joints but never got into it before I got away from roofing - and I'm sure there's a lot of new product out there since then. 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

2. 
   tab1 | Apr 23, 2006 04:57pm | #7

   You glue EPDM down with latex--paint????Thanks.

1. 
   seeyou | Apr 23, 2006 05:27pm | #9

   Latex adhesiveWhy is it every time I need to get somewhere, I get waylaid by jackassery?

   http://grantlogan.net/

2. 
   Piffin | Apr 24, 2006 12:07am | #14

   EPDM is adjhered with contact cement, either water based latex or high VOC petrobased ( if that's even legal anymore...)in original essence, latex is the rubber from the rubber tree. It has evolved to be a descriptoir for water based fluids 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

3. 
   Notchman | Apr 23, 2006 08:16am | #5

   Flintlastic by Certainteed is a good peel and stick material:  goes down over a membrane that is set and flashed ahead of the stickdown material.

   Just under $70 per sq.

4. 
   CJF | Apr 23, 2006 05:13pm | #8

   Is your roof a flat lock orstanding seam matal roof? Is there a soffit vent as well as a ridge vent ? if its flat lock a quick fix that will last a few years is to brush on a heavey fibered roof coating making sure the metal roof is not flaking or has any damage due to rust threw. Later you can screw down a hard board over the metal roof and glue down a rubber roof.   Rubber roofs last at the very most 15 to 20 years.  The seams seams and flashings are the first to go. I would use seam tape instead of glue for all rubber to rubber splices.  How much slope does the roof have ? If your roof is standing seam you either have to fill in the space between the seams or buy a ridged styrofoam that will saftley support the span between the standins seams or use 3/4 inch plywood screwed threw the metal roof.

1. 
   user-87255 | Apr 23, 2006 07:09pm | #10

   My roof is a Corrugated metal I have not checked it but it is only about a 1/12. the former owner tried taring the places that leak but that didn't work they just formed Dams that allow the water to puddle up and still leak thru. I got a estamite from the roofer who does all the work for the builder I work for He said if I pulled the metal and re sheeted the roof he would put down a TPO membrane(what he recomends) for $3.25 a square foot. Which I like that idea but I have 1400sqft of roof to cover so that is out of the budget. Can i put a fiber coating over the corrugated metal roof, and if so what type do you recomend? Thanks for the help. Michael

1. 
   philarenewal | Apr 23, 2006 07:48pm | #11

   >>"Can i put a fiber coating over the corrugated metal roof,

   Sphere and Piffin already mentioned Mule Hide.  They make coatings.

   Here's a link showing Mule Hide putting it down on a metal roof.

   http://www.mulehide.com/elastomeric/elastomeric.html 

   "Let's get crack-a-lackin"  --- Adam Carolla

2. 
   Sphere | Apr 23, 2006 07:48pm | #12

   Geocel 2315 is good stuff for that. Brushable only, no spraying. Dries almost clear, paintable and will buy you a few yrs. About 35 a gallon, covers about 400 sq.ft. Will fill gaps under an 1/8th in.

   Spheramid Enterprises Architectural Woodworks

   tagline comments are temporarily suspended due to Percostte

1. 
   Piffin | Apr 24, 2006 12:20am | #16

   The Geocvel would be the best choice, but ike you say, it is a temporary solution 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

2. 
   Piffin | Apr 24, 2006 12:17am | #15

   I don't feel like being disagreeable, but I do have to disagree with your opinions on this.....hope you don't mind."k a quick fix that will last a few years is to brush on a heavey fibered roof coating "in my experience, a roof coating for any low slope roof and especially a metal roof only has value to extend the life of an already good roof. It is a waste of time toapply to a metal roof that is already failing and leaking. As soon as the metal experiences any thermal expansion, it breaks the seams and bonds in the coating." Rubber roofs last at the very most 15 to 20 years."The thicker membranes readily last forty years. like any product, much depends on the installation and maintainance, but a broad statement generalizing a life of only 15-20 years is simply not based in fact. It may be true for poorly applied and/or the thinner membranes often used, but not true for the entire class. I wonder if you may be doing what some mistakenly do - confusing modified bitumen fopr the EPDM rubber. modified torchdown roofing does have a life expectancy of ten to twenty years. It can be extended with cleaning and coating every five years from aplication, but that seldom happens 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

5. 
   MikeSmith | Apr 24, 2006 12:25am | #17

   mike.. we've used Colphene.. it's a pretty superior product and Soprema is a very highly rated company

   if i recall, it uses a primer and then the peel & stick, the one we used was a granular frost

   mostly what we use now for peel & stick is "Polyglass"

   both products would be excellent for your use, what do you intend to do with the flange/ridge areas ?

    

   Mike Smith Rhode Island : Design / Build / Repair / Restore
1. 
   user-87255 | Apr 24, 2006 06:25am | #18

   I was planning on pulling the metal off the roof above it running the membrane 2-3' up that roof face and then putting the metal back on. my only real concern is snow I live in Montana and am way up on the side of a mountain and we get a lot of snow.