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Old 07-22-2016, 08:38 AM   #1
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Re-coating Roof - What a difference

My Mirada has a membrane roof. It wasn't leaking, but is old enough that its time for either a new roof or a re-coat.

I was getting a lot of chalking and it was time to do something.

I removed an old satellite antenna and plugged the holes, fixed a minor hole in the frig vent, installed a new AC roof seal, installed new vent cover seals (the ones inside the vent cover), and painted the tarnished skylight. The entire process took abut 4 hours.

I'm very happy with the finished result.

Re-coating EPDM roof | 2001 Coachmen Mirada 300QB

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Old 07-23-2016, 09:11 AM   #2
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That looks very nice. Good job !
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Old 07-29-2016, 12:32 PM   #3
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Nice!
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Old 07-29-2016, 01:24 PM   #4
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Good job! One tip for anyone who applies this product or any two part product. These products cure with the chemical reaction and also from the heat produced by this reaction along with the actual temperature on application day. The way to extend the open time is to pour the product into a shallow pan to prevent the build up of heat. An old trick from using two part epoxy products.
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Old 08-08-2016, 04:50 AM   #5
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OP I am curious about the Painting of the Sky Light So now it's No longer a Sky Light, is that correct???
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Old 08-08-2016, 04:58 AM   #6
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Even though I painted the skylight, it still lets in a lot of light. but with it being painted white, it reflects a lot of the heat.
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Old 08-11-2016, 11:28 PM   #7
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Which product did you use to recoat? 4 hours seems to be a really quick time frame to do the job. According to Dicor, rubber roofs should be 'renewed' at least every 10 years.
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Old 08-12-2016, 04:41 AM   #8
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I used the Liquid RV Roof from EPDM Coatings.

Total project time was round 4-5 hours over two days, This included pressure washing, removing / reinstalling MaxxAire and AC unit cover, Installing new AC roof seal, removing old satellite antenna.

I took the awning off, but didn't include that time because we were installing new awning fabric at the same time I was doing the roof. Time for the awning was a couple hours.

Awning replacement

http://www.2001mirada.com/replace-awning-fabric/



Roof re-coat

Re-coating EPDM roof | 2001 Coachmen Mirada 300QB

If its a hot day, don't mix all the EPDM at once. Mix about 1/2 and do the trim, edges, and around all the vents and covers first. Then mix the rest and do the roof.

EPDM Coatings - Liquid EPDM Rubber Roof Coatings For Roof Leaks

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Old 08-13-2016, 08:23 AM   #9
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Re-Coating Roof

How many gallons did it require to cover the roof?

I plan on re-coating my roof soon.

Per the Liquid RV Roof website I need six gallons and one gallon of primer
for the Alpha Roof.
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Old 08-13-2016, 08:49 AM   #10
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That is the amount we used on a 33 ft unit.

It works perfect as the 6 gallons comes as a one gallon can and a 5 gallon bucket.

The one gallon is used for doing the trim and edges then the 5 for the rest.

Search our posts for this unit we did last year as we learned a bunch and posted it.

Get a lot of masking tape and a large roll of plastic.

We coated over the trim parts and roof fittings so now all under the new rubber...never need to worry about a sesl.
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Old 08-13-2016, 05:34 PM   #11
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My Mirada is 30ft. I bought 6 gallons (a 5 gallon bucket and one gallon can) I needed just a little under 5 gallons, so was able to return the one gallon can (unopened of course)

Like TQ60, I painted over some of the seams, i.e. where the endcaps meet the rubber roof.

Re-coating EPDM roof | 2001 Coachmen Mirada 300QB

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Old 08-17-2016, 10:51 AM   #12
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I used Eterna kote S-100 on my it's really nice an sealed. Yours looks really nice good job.
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Old 08-21-2016, 06:10 PM   #13
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How does the material cost, time and labour compare to installing a new piece of EPDM?

A new EPDM roof was installed on my MH several years ago. I would have done it myself but got a good deal on materials and labor I couldn't pass up.

I have a gallon of the liquid EPDM I was thinking of using to apply an additional coating to the seams.

I'm wondering, what differences are there between coating with liquid epdm and installing a new epdm membrane?

Is it mostly the liquid epdm doesn't require the labor of stripping off the old roof and hardware (possible underlayment preparation) and then re-installing?
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Old 08-21-2016, 06:28 PM   #14
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My thoughts:

A new membrane (materials) cost about $1200 and would probably take me three days to install it, if I didn't run into any problems. Lot of work. but a good 15 year lifetime. I got a guesstimate of $3500 to have someone do it.

Recoat material cost $400, and took about 4 hours total to do it. life expectancy probably 7-10 years.

The underlayment on mine is good, no ceiling problems, no leaks, so I decided to recoat vs new roof.
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