PDA

View Full Version : cyclone roofs



ravenike
12-08-2011, 06:20 AM
Why are the roofs of 5th wheelers not made from a one piece fiberglass cap....like motorhomes? I see many threads with cyclone owners that have roof issues...with new model cyclones!!!

cookie
12-08-2011, 09:21 AM
I don't know for sure why the roof is not one piece fiberglass but I can think of a couple of possibilities.
One could be the weight factor and another could be the way the coach is designed. A motor home frame has wheels on four corners (about). A fifth wheel has the wheels centered (about) on the frame. There could be some flexing and twisting that would not be friendly to a fiberglass roof.
I dunno, just a couple of thoughts.
As far as roof issues with new Cyclones I can't say that I have noticed any increase in threads indicating problematic roofs.

Peace
Dave

Ray LeTourneau
12-08-2011, 11:03 AM
Where are you seeing all of these "Cyclone" roof issues? I have heard of a couple that the roof membrane was billowing and a few with bubbles but they were not Cyclone specific issues. This is an issue across the entire spectrum of RV's with rubber roofs. All brands included.

AJJONES
12-08-2011, 11:52 AM
Fiberglass roofs work great on motor homes (rigid chassis with weight distributed over the outer 4 corners) how ever they do not work nearly as well in a 5th wheel. A fiberglass roof is very rigid and does not work well on 5th wheel because of the flexing in the chassis. The fiberglass roofs are also prone to cracking especially in severe weather conditions (many of our buyers are in the extreme cold weather of northern Alberta, or extreme heats of the desert). How ever we do appreciate the input, and always look forward to hearing product suggestions

brianharrison
12-08-2011, 01:48 PM
....many of our buyers are in the extreme cold weather of northern Alberta, ....


Hey - I represent that remark.....;)


Brian

sJv
12-08-2011, 02:41 PM
AJ,

Has Heartland considered using TPO roofs? This material is thicker and less prone to punctures. I like to think of EPDM is like an inner tube, where TPO is like a tire. TPO is used by a few manufacturers, but is not very common. My guess is that it is more expensive.

Thanks!

-steve

jbeletti
12-08-2011, 04:05 PM
Just recently, we began to use TPO on Landmark, Bighorn & Big Country.

Jim

sJv
12-08-2011, 05:26 PM
Oh? My Cyclone 300C just came off the line this week. It will have a TPO roof????

-steve


Just recently, we began to use TPO on Landmark, Bighorn & Big Country.

Jim

boatto5er
12-08-2011, 06:12 PM
Hey - I represent that remark.....;)


Brian

Brrrrr!!!:cool:

ucwinters
12-08-2011, 08:25 PM
Where are you seeing all of these "Cyclone" roof issues? I have heard of a couple that the roof membrane was billowing and a few with bubbles but they were not Cyclone specific issues. This is an issue across the entire spectrum of RV's with rubber roofs. All brands included.

I bought a 2011 Elk Ridge 29 ft a couple of months ago. Climbed up the ladder and the roof had multiple bubbles and a few large ridges. Took some pics and sent them to Heartland. Response from the rep was that this was "normal" and that he'd "seen it hundreds of times" and nothing to be concerned about. To me, it means poor technique when putting the membrane down, not applying sufficient adhesive and not working out the air pockets.

Ed W.

Lynn1130
12-08-2011, 10:34 PM
OK, I will bite. What is a TPO roof and how recent is "recently".

JohnDar
12-08-2011, 10:41 PM
OK, I will bite. What is a TPO roof and how recent is "recently".

This bit of info comes from Wikipedia.

Thermoplastic PolyOlefin (TPO) is a trade name that refers to polymer (//heartlandowners.org/wiki/Polymer)/filler blends usually consisting of some fraction of PP (polypropylene (//heartlandowners.org/wiki/Polypropylene)), PE (polyethylene (//heartlandowners.org/wiki/Polyethylene)), BCPP (block copolymer polypropylene (//heartlandowners.org/wiki/Polypropylene)), rubber, and a reinforcing filler. Common fillers include, though are not restricted to talc, fiberglass, carbon fiber, wollastonite (//heartlandowners.org/wiki/Wollastonite), and MOS (Metal Oxy Sulfate). Common rubbers include EPR (Ethylene propylene rubber (//heartlandowners.org/wiki/Ethylene_propylene_rubber)), EPDM (//heartlandowners.org/wiki/EPDM) (EP-diene rubber), EO (ethylene-octene), EB (ethylene-butadiene), SEBS (Styrene-ethylene-butadiene-styrene). Currently there is a great variety of commercially available rubbers and BCPP's. They are produced using regioselective (//heartlandowners.org/wiki/Regioselective) and stereoselective (//heartlandowners.org/wiki/Stereoselective) catalysts known as metallocenes (//heartlandowners.org/wiki/Metallocene). The metallocene catalyst becomes embedded in the polymer and cannot be recovered.

Ray LeTourneau
12-08-2011, 11:49 PM
I bought a 2011 Elk Ridge 29 ft a couple of months ago. Climbed up the ladder and the roof had multiple bubbles and a few large ridges. Took some pics and sent them to Heartland. Response from the rep was that this was "normal" and that he'd "seen it hundreds of times" and nothing to be concerned about. To me, it means poor technique when putting the membrane done, not applying sufficient adhesive and not working out the air pockets.

Ed W.
Ed, you are basically confirming what I just mentioned. Mine has had bubbles, 1" to 1-1/2" in diameter, and ridges a few inches long. One is a bit longer. They have been there since day 1 back in July of 2006. They haven't gotten any larger. I keep a close eye on them every time I clean the roof. Every RV I've owned with a rubber roof has had the same bubbles/ridges.
I don't disagree, it's not a great technique but I can imagine how difficult it is to put these huge membranes on. I can hardly get a protective screen on my smart phone without a bubble or piece of lint.:rolleyes:

archbarb
12-09-2011, 06:05 AM
I climb onto my roof often to sweep and wash when needed. I've noticed bubbles a few times, but when I check later they appear to be gone!!!!!

Just a wild guess, but could it have anything to do with weather, shrinking and expanding?

Archie

jbeletti
12-09-2011, 08:07 AM
OK, I will bite. What is a TPO roof and how recent is "recently".

Lynn,

I can't say with certainty, but I'd guess the last month or 2 for LM, BH. For BC (Big Country), probably ever since we went with the tan exterior wall color. One of the benefits of using TPO is that you can get it in a variety of colors. For tan Big Countrys and full-body painted Landmarks, the tan roof is a nice complement.

Jim

BarneyFife
12-11-2011, 08:19 AM
I climb onto my roof often to sweep and wash when needed. I've noticed bubbles a few times, but when I check later they appear to be gone!!!!!

Just a wild guess, but could it have anything to do with weather, shrinking and expanding?

Archie

Every camper I've owned has done that. There one day, gone the next. Never had a water leak issue.

vgstef
12-12-2011, 08:01 PM
What is the diff. epdm vs tpo roof ? I know that jayco did have problem with the Tpo roof.

vgstef
12-13-2011, 11:03 AM
Read on TOP

http://www.rv.net/forum/Index.cfm/fuseaction/thread/tid/25340316/gotomsg/25340907.cfm

AJJONES
12-13-2011, 11:48 AM
Just so everyone is aware Cyclone and Road Warrior never changed our roofing material and we are still using the rubber material, because for our application it adhears to the glue better than the felt material on the back side of the TPO so we decided to stick with the rubber material they both work very well though and both have been being used for years.

sJv
12-13-2011, 12:52 PM
Thanks for the clarification, AJ!

-steve

jbeletti
12-14-2011, 12:43 AM
Hey gang,

Sorry about the error in me reporting CY and RW moving to TPO roofs. This is not the case as AJ points out. CY and RW use EPDM.

Thanks,

Jim

JasonShrout
12-31-2011, 04:42 PM
Aj,
as an estimate for the 42ft cyclone, how much would it cost to replace the rubber? Could rhino liner be an effective alternate (especially if the roof is frequently used)?

Lynn1130
01-01-2012, 09:47 AM
Rhino is a very interesting idea. I wonder about added weight but I would think that it would hold up well. If anyone saw "Myth Busters'" tests with it they would be convinced. If 2 lbs of C4 can't get through it, walking on it sure would not hurt it.

JasonShrout
01-07-2012, 08:26 AM
As I understand it, the roof is load bearing. At most, it'd only be 3/4 lb per sq. ft.. The cost might be to problem. estimate it at $5-7 per sq. ft.. On the upside, you'd never have to worry about hail.

recumbent615
01-08-2012, 10:23 AM
That and if 2lbs of C4 goes off inside your RV at least the Roof will still be there... :). But keep in mind that the bed liner does chip and peel as it get's older. I have a 2005 PU and my bed liner is starting to fail, and there is less flex in the bed of my truck than there would be on the roof of my cyclone.

Lynn1130
01-10-2012, 09:30 AM
Could be the application process. I have a 2004 PU and have no chipping or pealing.