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 > tpo vinyl roofs vs epdm

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et2

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Posted: 08/20/11 07:24pm Link  |  Print  |  Notify Moderator

Is one better than the other? Anyone have any experience with the vinyl roof? We are getting a new Cameo with this type of roof. Just curious if it's easier to maintain.

SooperDaddy

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Posted: 08/20/11 08:52pm Link  |  Print  |  Notify Moderator

EDPM Vinyl has been sold as commercial roofing product for more than 45 years; Around the world, and going back decades, billions of square feet of vinyl roof are installed on buildings in climates of every imaginable extreme. It is a material that has proven performance to withstand all of those stressors.

TPO is a newer product with about 17 years’ field experience. TPO is a synthetic rubber compound with outstanding heat, ozone and weather resistance. It was commercially developed in 1994 and is now the leading industrial roofing material. TPO has been popular with RV builders because it is durable and weighs half of what a EDPM roof weighs.

From Alpha Systems website regarding both roofing materials care......

"Periodic cleaning (three to four times per year) is the primary maintenance required. Alpha Systems recommends using a non-abrasive household cleaner, such as Top Job or Spic-N-Span, and a medium-bristled scrub brush. Do not use any harsh or highly-abrasive products during cleaning. When finished cleaning, remember to thoroughly rinse the roof and sidewalls in order to remove any soap residue and to prevent streaking. CARE SHOULD BE EXERCISED WHEN WORKING ON TOP OF YOUR UNIT! THE ROOF MAY BECOME SLIPPERY WHEN WET.


DO NOT USE ACETONE, OR ANY OTHER PRODUCTS CONTAINING PETROLEUM DISTILLATES, ON THE ALPHA SYSTEMS ROOF MEMBRANE. USE OF THESE PRODUCTS WILL DAMAGE THE MEMBRANE.


Periodic inspection of the roof, during cleaning, is highly recommended. Check the membrane for signs of damage. Check the caulk/lap sealant used in all termination areas, and around all accessories and fasteners, for signs of cracking or voids.

The roof membrane can be cut or punctured by sharp objects. Caution should be used when placing any articles on the roof. If damage does occur, the membrane can usually be patched.

Alpha's membrane is quite inert and will resist weathering well. It does not require the periodic application of products to protect it from ultra-violet light or ozone. In fact, these products can often cause damage to the roof membrane."



My posts shouldn't be taken for factual data, and are purely fictional, for entertainment purposes, should not be constituted as related to scientific, technical, engineering, legal, religious, spiritual, or practical advice. After all it's FREE! Amen.


luvglass

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Posted: 08/20/11 10:16pm Link  |  Print  |  Notify Moderator

We live in a 2006 Cameo and never have had to do anything with the roof. It gets washed a few times a year when we have the rig done and I inspect it about twice a year for seam leaks. It's still almost pure white and we have never had a leak.
Also we have never had any black streaks.

Just about trouble free, rest easy.


Fred Wishnie
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burlmart

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Posted: 08/21/11 06:51am Link  |  Print  |  Notify Moderator

fordsooperdooty wrote:

EDPM Vinyl has been sold as commercial roofing product for more than 45 years; Around the world, and going back decades, billions of square feet of vinyl roof are installed on buildings in climates of every imaginable extreme. It is a material that has proven performance to withstand all of those stressors.

TPO is a newer product with about 17 years’ field experience. TPO is a synthetic rubber compound with outstanding heat, ozone and weather resistance. It was commercially developed in 1994 and is now the leading industrial roofing material. TPO has been popular with RV builders because it is durable and weighs half of what a EDPM roof weighs.


Thanks for this very upbeat report - it makes me feel much better about our Trail Lite.

How can I tell which one (TPO, EPDM) is on our rig?


2005 Trail Lite 213 B-Plus w/ 6.0 Chevy


skipnchar

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Posted: 08/21/11 10:44am Link  |  Print  |  Notify Moderator

Not a lot to choose from but because EPDM is very sensitive to what PRODUCTS are used on it I prefer the Vinyl roof (TPO). You can clean it with about anything without damage.


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Charlie D.

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Posted: 08/21/11 11:18am Link  |  Print  |  Notify Moderator

As Skip said, not much too choose from. EPDM IS NOT Vinyl. It is a synthetic rubber. TPO IS NOT rubber and has a felt type lining and will wick water if it is compromised.

PVC is becoming a popular roof material. The key to any roofing system is being careful with maintenance and insure that all caulking is intact. Do a search on "TPO Roofing Problems"


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Posted: 08/21/11 03:50pm Link  |  Print  |  Notify Moderator

We've only had our Cameo a couple of months, but it appears that the vinyl material is a cleaner roof than the EPDM system we had on our last rig. So far no black streaks.


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Pirate

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Posted: 08/21/11 06:58pm Link  |  Print  |  Notify Moderator

Charlie D. wrote:

As Skip said, not much too choose from. EPDM IS NOT Vinyl. It is a synthetic rubber. TPO IS NOT rubber and has a felt type lining and will wick water if it is compromised.

PVC is becoming a popular roof material. The key to any roofing system is being careful with maintenance and insure that all caulking is intact. Do a search on "TPO Roofing Problems"
I do not believe the stores of "wicking" water under the TPO roof. To me, this is nothing but hearsay. I have a TPO roof. It is rugged. I removed my shower sky light to replace it. I did find some water leakage under one corner. Once this sky light was removed, I was able to lift up the TPO and look under for a few inces. I did not see any indications of water "wicking" it's way from the leak to areas further. I would like to see some substantive reports or photos of TPO causing further problems from "wicking." Any repair types have some FIRST HAND reports of this?

burlmart

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Posted: 08/25/11 03:37pm Link  |  Print  |  Notify Moderator

Are TPO and EPDM easily visually distinguished?

BarneyS

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Posted: 08/25/11 06:22pm Link  |  Print  |  Notify Moderator

Pirate wrote:

I do not believe the stores of "wicking" water under the TPO roof. To me, this is nothing but hearsay. I have a TPO roof. It is rugged. I removed my shower sky light to replace it. I did find some water leakage under one corner. Once this sky light was removed, I was able to lift up the TPO and look under for a few inces. I did not see any indications of water "wicking" it's way from the leak to areas further. I would like to see some substantive reports or photos of TPO causing further problems from "wicking." Any repair types have some FIRST HAND reports of this?

Not hearsay at all. Click here and here for a first hand report along with some pictures as you requested. Also, you might PM Turk2500 and ask him for his experience with the TPO roof. That would not be hearsay but a first hand report.
Barney


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