I could be wrong, but since I have never heard of Hydro-stop, it must be relatively new, therefore nobody is going to have a hydro-stop roof that is over 20 years old. Once again, you are talking about a coating, not a roof system, A roof "System" by definition includes everything from the structural roof deck uo ie Thermal Insulation, coverboard, and roof membrane, which can be one of many many types, Single Ply, Built up, Modified Bitumen. You have subsets of all, mechanically fastened, fully adhered, ballasted.So if you are not a fan of HydroStop, what do you recommend if one wants a +50 year life from initial install + maintenance?
Do you have direct experience with HydroStop / Premium Coat when it's installed over a properly cleaned-repaired-prepared flat concrete deck, tapered isoboard, then only HydroStop per manufacturers specs?
Anyone have a HydroStop - Premium Coat roof that is over 20 years old? 30? Maximum?
Thanks in advance;
If you haven't heard of HydroStop - have you heard of GAF that just bought Quest Construction Products? QCP bought HydroStop in 2007, so it's been around a while.I could be wrong, but since I have never heard of Hydro-stop, it must be relatively new, therefore nobody is going to have a hydro-stop roof that is over 20 years old. Once again, you are talking about a coating, not a roof system, A roof "System" by definition includes everything from the structural roof deck uo ie Thermal Insulation, coverboard, and roof membrane, which can be one of many many types, Single Ply, Built up, Modified Bitumen. You have subsets of all, mechanically fastened, fully adhered, ballasted.
A membrane applied as a liquid is a coating, not a roof system. The only low slope roof system I ever encountered that was over 40 years old was a 5 ply coal tar pitch roof applied directly onto a massive concrete deck which acted as a heat sink. It was on a staging facility on a river in New Jersey where Sherman tanks were loaded on transport ships to be sent to Europe during WW2. The floors of that facility were 8 foot thick reinforced concrete. The coping stoned were 2 x 2 foot limestone over 20 oz. copper, most of which had been stolen. When you start talking 50 year life span you are usually talking steep roofs, lead (which they use on Cathedrals) Good quality Slate, (Peach Bottom, Buckingham) Copper, and the like.
Again, a liquid is a paint, period. Good Luck.
If you haven't heard of HydroStop - have you heard of GAF that just bought Quest Construction Products? QCP bought HydroStop in 2007, so it's been around a while.
Ok, given that this is sales material from Quest, attached is a brochure with the following:
Page 6 Quotes:
One Roof For Life
* The only roof that lasts as long as the building
* Ownership costs much less than comparable roof systems
Roof System Life Expectancy (Data provided by National Roofing Foundation, from study of low-sloped roofs)
Roofing System -- Life Expectancy -- Roofing Systems installed
--------------------- (in years) ------- over 40 year life
EPDM Ballasted --- 13 ------------------ 3.08
BUR --------------- 16 ------------------ 2.5
Modified Bitumen - 21 ------------------ 1.9
PVC ---------------- 13 ------------------ 3.08
TPO ---------------- 13 ------------------ 3.08
Fluid-Applied ----- Infinite -------------- 1
Page 7: EXTENDS ROOF LIFESPAN According to the National Roofing Foundation, the average service life of a low-sloped roof is 17 years. With proper maintenance, a fluid-applied roof system can last the LIFE OF THE BUILDING.
Page 7 continued: Along with recommended annual cleaning, once every ten years (on average) a maintenance layer of the fluid-applied roof system is applied.
Page 11: Quest offers fabric-reinforced acrylic elastomer systems such as PremiumCoat. These Class 1, FM 4470 approved roofing systems function both as stand-alone roof systems and as recover systems... The are internally plasticized adn meet ASTM D-6083 for items sch as flexibility, mechanical properties, adhesion, etc.
Not trying to promote this company - product, just trying to find others with experience, either good or bad, to help decide if we should install this roofing system. Again, we plan to tear off the old TPO and ISO, inspect - repair the desk, then install tapered ISO for insulation and provide some slope, followed by roof system as recommended by manufacturer - general contractor hired to professionally install.
Jagans reply includes: "Let me try this again. A roof waterproofing membrane is a matrix which consists of one or more reinforing layers and at least two layers of waterproofing material. If a roof system fails, and you paint a waterproofing material onto the failed roof, the failure usually telegraphs through the overlay (Paint)".
Ok, yes, fully AGREE! Roof System includes multiple components.
Why does Jagan NOT agree that QCP - GAF is a FULL ROOFING SYSTEM? Per the company and above QCP has:
*Primer to go down on almost any base - new construction concrete or old roof systems.
* Water proof comprised of a base coat of liquid applied HydroStop Foundation Coat PLUS a polyester membrane PLUS a top layer of HydroStop Foundation Coat. Just had a fairly long and detailed conversation with the GAF Area Technical Rep.
* Multiple COATS of the PremiumCoat - or paint pe Jagans. This, as explained by the GAF Area Technical Rep is a Sacrifical or Barrier that protects the Foundation Coat + Membrane that provides the true water proofing. Hence over the years, the top coat that is exposed to the environment wears away and roughly every 7 to 10 years is cleaned and reapplied!
Yes, like repainting a house, one does NOT get a new house each time it's painted! Agree. BUT as long as the level of protection is fully updated - whats the difference? Not seeking a new building each 10 years, simply seeking to KEEP an effective building envelope!
Seems to me that GAF - QCP has a full roofing system, with multiple components. Guess am not clearly explaining as Jagans is focused ONLY on the coating of Premium Coat. So exactly how does one get a title of 'Roof Master' on here? Does this mean one has simply made x number of posts - or is some level of skill and expertise required?
Is this NOT a Roofing SYSTEM? Maybe am very, very slow and dense, but sure looks like a multi component system to me... But again, am simply a 'newbie' on here!
Sorry about the misspelling, I am usually pretty particular about that. Well I consider the day I do not learn something a sad day, so I am always open to learn new "Tricks". Unfortunately, most of the new tricks in roofing really are tricks LOLOL. There are some very good sources on here including 1985GT, and Eric fro WOW, so I would listen to what they have to say, as well as myself. I have EPDM roofs that I designed approaching 25 years but in the design I included a 12 inch cover strip over the field fabricated seams, because at the time I was in contact with Walter Rossiter who worked for NIST and his findings alerted me to the fact that EPDM fails due to T-Peel at the field fabricated seams. I have had good luck with multiply Built up roofs with an SBS cap sheet, EPDM, and with Thermoplastic membranes I have some fully adhered Sarnafil (PVC) roofs that are still performing that were installed in 1984. Fibertite (EIP) is also an excellent single ply and I have many of those that are quite old. It might interest you to know that the preferred roof in the middle east is white Sarnafil. I think that is what is on the KABA, if I got that spelling right. That's the box with the meteorite (Black Stone) that Muslims circle during their Haaj.From Jagans Profile:
About jagans "BiographyProficient in Carpentry, Plumbing, Electrical, HVAC, Profesional Registered Roof consultant for 25yr"Humm... Professional is misspelled and maybe it's time that an old dog learns new tricks?
Can anyone advise of another Roofing System that advertised "Roof for the life of the building" with the backing - reputation similar to GAF? Am very interested if anyone can, as we are about to spend +$1/4 million US on a new one and want it to be the best on the market for our building and climate!
Thanks in advance;