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Old 08-20-2020, 07:41 AM   #1
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TPO Roof Treatment

Heard a comment on a YouTube video recently saying one of the differences between TPO and EPDM is EPDM needs to be cleaned and conditioned with a rubber roof conditioner. The TPO roof was said to not need a conditioner, only regular cleaning.

What say the authorities?
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Old 08-20-2020, 06:24 PM   #2
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According to the manufacturer of my TPO roof, Alpha Systems, TPO needs no regular maintenance/treatment. Just a periodic cleaning will be fine.
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Old 08-28-2020, 07:42 AM   #3
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I have seen a number of commercial roofs made with TPO and they do not appear to be cleaned by people, just the rain.
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Old 08-28-2020, 07:58 AM   #4
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Originally Posted by Gold Pot View Post
I have seen a number of commercial roofs made with TPO and they do not appear to be cleaned by people, just the rain.
I only clean the roof so I can see problems better.
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Old 08-28-2020, 08:01 AM   #5
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I used Murphy Oil Soap on my TPO roof as per the Mfg instructions.

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Old 10-25-2020, 03:57 PM   #6
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Yep, mine is 16 years old and no problems. Clean a few times a year with Murphys and a splash of bleach. Now that does not mean you can ignore the caulk. You must inspect at least twice a year for failure anywhere there is something attached to the roof and at the edges and caps. The only think worse for your trailer than a water leak is an undetected or unrepaired water leak. It will destroy the trailer given enough time. You can reduce the likelyhood of leaks by using eternabond everywhere you can. Hope this is helpful
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Old 10-25-2020, 04:16 PM   #7
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Facilities Manager here... $.02
We all know spending some time going over and cleaning stuff you own makes it last longer. Have had buildings with both TPO and EPDM.
EPDM holds up better however on a full glue down (current building is only sections glued) is not as flexible as TPO and gives more residue to clean off the sides of your RV.
TPO is more flexible and a bit cleaner but tends to stretch and tear easier.

I clean the roof once a year. Gives me a reason to give a good look at the roof and all sealed joints or penetrations. Also to check for glue that may have released.

But I have been told I can be anal about things...

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Old 10-25-2020, 04:33 PM   #8
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We had a TPO roof on our prior Bounder. Kept it for 13 years & it got washed once a year with a solution of Simple Green & some bleach. Being up there gave us the chance to inspect for tears & cracked caulk. We didn't treat it with anything.

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Old 10-25-2020, 10:02 PM   #9
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We have TPO on our roof and power wash it once a year using just water and a 1600 PSI electric washer carried in our storage compartment. It takes about 1 hour to wash and the roof looks clean and white when I am done.
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