Duro-Last Roofing

 
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Old 09-25-2010, 01:11 PM   #1
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Duro-Last Roofing


just finished our first Duro-last job. thought it was kinda a pain in the ass with all the stretching and pulling with there grip pull tools. could have put fully adheared EPDM down faster and cheaper for sure. I do really like there membrane but dont really buy into the whole prefab concept. I will do them though, espeacially if I get leads for them.

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Old 09-25-2010, 04:57 PM   #2
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Re: Duro-Last Roofing


yeah one of our metal shops here is an authorized dealer/installer. they hardly ever install any thou. once in a blue moon they will get some to install on commercial buildings. ive never installed it myself either and it seems like a real pain in the ass. then again ive hardly cut my teeth into single ply membranes but those dont even look as close as annoying as the durolast does.

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Old 09-25-2010, 05:47 PM   #3
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Re: Duro-Last Roofing


I have yet to see one that looks like a decent, professional job. Nice theory but not real-world practical in my opinion. Better off certifying in IB or Fibertite.
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Old 09-25-2010, 07:54 PM   #4
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Re: Duro-Last Roofing


I already am certified in IB and Fibertite. The Sarnafil factory is also only a 45 min drive. But it seem DL has some brand name recognition.
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Old 09-25-2010, 08:50 PM   #5
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Re: Duro-Last Roofing


one of the last roofers I worked for picked up alot of single ply jobs. he had the foreman going out doing them himself. hell i volunteered to be his helper because i wanted to learn how to install the stuff. i look at it as more experience under my belt. the owner told me that was **** work and i didnt want to know how to do it. and i insisted i wanted to learn but no go. so once again i was stuck at the shop folding metal and putting out orders.. f'er!
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Old 09-27-2010, 11:14 AM   #6
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Re: Duro-Last Roofing


I'm with you, RooferJim - the prefab thing is a pain. You also have to have everything measured out just right or their are alot of modifications to make. My guys are use to membrane rolls and we spent half our time fighting the folded up prefab panels to get them in the right spot. Duro Last says that when your installers are use to it things go way faster but I really dont want a new learning curve in this economy. I think the prefab thing is a way to introduce new roofers not experienced in single ply into the market while trying to minimize the needed investment in training hot-air welders and getting robot welders.

I am a big Sarnafil guy as they seem to have the least problems that I know of. Out here in the west we have had a number of issues with membranes failing and falling apart and Sarnafil has withstood the test of time. Fibertite (approved with them)seems to be OK but they are kind of pricey. Havent heard any bad things about IB's membrane (not approved with them) but I do personally have issues with private-labeled membranes. We rarely install single ply on residences but would use Duro Last if a mfg. warranty was needed. Otherwise, I like to use Sarnafil.
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Old 09-27-2010, 02:38 PM   #7
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Re: Duro-Last Roofing


yeah i dont really like the concept of the whole prefabbed thing either, but id be filling it try it out and learn how to install it just because.
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Old 02-04-2011, 03:16 PM   #8
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Re: Duro-Last Roofing


Just joined today and thought this would be a great place to put my first post. Im 27 and have been roofing since I could climb a latter with my dad. My father has always been the "next big thing" type of guy and thats how he got us into Duro-Last 15yrs ago. It took a little time to get it down but after awhile we got good! Last year we did 115sq in 8days with a T/O of 3" rocks holding down a rubber roof. I run a crew of three, myself and two others. My min. bid starts at 350/sq. For every pen, drian, crub, ect. there is an add on. Useing the Grippull is a wste of time the tool is cumbersome, and can potentially damage the roof, I have brought this up with Duro-Last many times..........I personally use home made tools for much of the install.Duro-Last is ideal for my situation, being located in SE NM. DL is highly UV reflective, we experience long dry spells, and it can go from freezing to 80 degrees in a couple of hours eventially reaching over 100, and then back to freezing that night. So roofing with anything tar based becomes quite a challenge. Im not real familiar with other single-ply membrains but what I do know is that I install over "lifetime" IB often. Personally I trust a one piece mechanically fastend (screws) and chemically bonded roof over one that glued and stipped together. No matter how good that glue is it cant be better than screws and carbon bonding. Also DL is grat for covering your boat seats and making coozies! Oh and wraping your live wells! (pics of my boat on the way)
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Old 02-05-2011, 11:58 PM   #9
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Re: Duro-Last Roofing


@Bornsavage1983
Qoute: Im not real familiar with other single-ply membranes but what I do know is that I install over "lifetime" IB often.

Do you mean that you replace failed IB roofs with new dura-last?

oh, and btw - it's ladder, not latter... and other few things... If you are writing bids, might work on that spelling... ... no offense - i have same problem when i type fast
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Old 02-06-2011, 10:01 AM   #10
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Re: Duro-Last Roofing


Well because were getting techincal about the wrong things, No I do not install car batteries over IB roofing, since those are the only things I know that are dura-last. But because were roofers amongst roofers, I know what your talking about and could care less about your spelling but rather your content. So yes I mean that I replace IB roofs with Duro-Last, because that is what I said. Not quite sure how you could take it to mean anything else. Maybe because I said "over", that threw you off? I try and overlay as much as I can, especially when the job is comming out of the customers pocket. Which of course it is in this senerio, because what insurance company is going to replace a three year old roof?
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Old 02-06-2011, 05:29 PM   #11
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Re: Duro-Last Roofing


Interesting, what did you find that went wrong with the IB roof? was it under warranty ? they have roofs that are over thirthy years old that are still in service. I am impartial as I install both IB and Duro-Last and like them both.

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Old 02-07-2011, 09:40 AM   #12
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Re: Duro-Last Roofing


I love the way D/L walls look! Nice and tight just like they should be. What kind of Glue do they use on the walls? I wouldnt they they would hold up well in your area. We have seen D/L roofs spider web crack from hail hits when it gets too cold. I dont know what ones I replace more of D/L roofs or Spray Foam.
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Old 02-07-2011, 03:02 PM   #13
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Re: Duro-Last Roofing


I do not buy into the prefab concept myself either since I hear they don't always get it right. if I were to install durolast I would just ask them to sell me the rolls and accessories and I'll do it myself like I would with anyone elses PVC.
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Old 02-07-2011, 06:25 PM   #14
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Re: Duro-Last Roofing


Most of the problems I have seen with the IB are with the adhesive. Around outside corners and scuppers mainly. Another one is, I see it sometimes pulling away from the drip edge on three sidded patios. As with most bad roofs I think its mainly installer error. Most of the time the customer tells me they were unable to get ahold of the IB contractor.

As with the spider webbing with the DL, I have seen this before also and I was there when the Duro-Last rep showed up for inspection. He said the only way DL will crack from hail is when it has been exposed to a "no-no" chemical. Plumbers and HVAC guys are notorious for this. Not because they mean to but, they just dont know. I have actually seen IB do the same thing.
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Old 02-07-2011, 07:36 PM   #15
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Re: Duro-Last Roofing


Quote:
Originally Posted by Bornsavage1983 View Post
Most of the problems I have seen with the IB are with the adhesive. Around outside corners and scuppers mainly. Another one is, I see it sometimes pulling away from the drip edge on three sidded patios. As with most bad roofs I think its mainly installer error. Most of the time the customer tells me they were unable to get ahold of the IB contractor.
Dude - what adhesive? IB is a fully welded system and adhesive should not be used on any seams or flashing. If they glue outside corners and scuppers, then don't tell us you replace a ton of failed IB roofs. You replaces hack jobs and IB has nothing to do with it. It can be sarnafil or fibertite or any other decent roof, but if it's hacked - it's a bad roof all of a sudden. Be more specific next time.
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Old 02-08-2011, 07:59 AM   #16
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Originally Posted by Bornsavage1983 View Post
s with the spider webbing with the DL, I have seen this before also and I was there when the Duro-Last rep showed up for inspection. He said the only way DL will crack from hail is when it has been exposed to a "no-no" chemical. Plumbers and HVAC guys are notorious for this. Not because they mean to but, they just dont know. I have actually seen IB do the same thing.
For this reason I am thinking about getting patches made up with my company name and a warning notice saying something like... "Warning this is a fragile roofing system. Please expose to no chemicals or punctures. Contact Grumpy's Roofing Co at... "

I would then place one by each AC unit and roof hatch.
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Old 02-15-2011, 02:03 AM   #17
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Re: Duro-Last Roofing


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because what insurance company is going to replace a three year old roof?
All of them if there is hail/wind damage and I'm meeting the adjuster. All single ply roofs become more susceptible to hail impact damage once they get past around 10 years of age. They become more brittle. Actually, most all systems do. The oils and plasticizers start to bake out from UV causing the membrane to become increasingly more brittle as age wears on. The only roof system that is not affected as much by UV exposure is a BUR/G. The multi-ply mopped in place systems will stay much more pliable for much longer than the single plies and mod bits, both APP and SBS.
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Old 02-15-2011, 07:40 AM   #18
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Re: Duro-Last Roofing


DL gives you patches to weld on that say just that Grumpy. or basicly that.
I also just got some samples of IB that were taken off a school building in Oregon that was installed in 1978. They reroofed it to make the membrane into samples. Its not brittle and still weldable. Yes I tried it. These systems are good and long life roofs.

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Old 02-15-2011, 07:48 AM   #19
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Re: Duro-Last Roofing


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Originally Posted by Bornsavage1983 View Post
As with the spider webbing with the DL, I have seen this before also and I was there when the Duro-Last rep showed up for inspection. He said the only way DL will crack from hail is when it has been exposed to a "no-no" chemical. Plumbers and HVAC guys are notorious for this. Not because they mean to but, they just dont know. I have actually seen IB do the same thing.
The DL rep is feeding you a line of bull. The main one we saw the cracking on has the ac's on one side of the building. guess what side had most of the cracks. The side that doesnt have any AC, and it doesnt drain that way either. Also a no-no chemical? Hmm I always thought thats what PVC stands up better to chemicals. No other roof would last on a fast food joint that has fatty oils driping on it all day long. An EPDM wouldnt last a week before it was all wrinkled and streched out.
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Old 02-15-2011, 09:02 AM   #20
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Re: Duro-Last Roofing


Quote:
Originally Posted by RooferJim View Post
DL gives you patches to weld on that say just that Grumpy. or basicly that.
I also just got some samples of IB that were taken off a school building in Oregon that was installed in 1978. They reroofed it to make the membrane into samples. Its not brittle and still weldable. Yes I tried it. These systems are good and long life roofs.

RooferJim
It depends on how the membrane is installed.

I recall one apt building I use to service years ago, the membrane was sarnafil.
Most of it was ballasted with 1.5 inch river stone, and outer sections which were overhangs for balconies were fully adhered.
The membrane that was ballasted after several years became very brittle, had extreme shrinkage issues and was extremely hard to weld.

The membrane that was fully adhered was still as flexible as the day it was installed and was quite weldable after a cleaning with MEK.

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