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Old 08-26-2014, 10:36 PM   #1
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Ever replaced a roof on a MH?

Hello,

Wanted to know if anyone ever replaced a roof on a MH or had one replaced professionally?

How hard and or expensive was it. Talking 36 foot. Roof has some soft spots and that is why I think it may need replaced. No dipping or holes just a few soft spots.

Any info would be helpful.
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Old 08-27-2014, 04:48 AM   #2
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I just finished coating my rubber EPDM roof with liquid rubber
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Old 08-27-2014, 06:48 AM   #3
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replacing a roof on a MH

Could you please elaborate on why you did it and how it went? Cost? What size MH you have and how long it took.
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Old 08-27-2014, 07:30 AM   #4
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I've replaced several roofs professionally, 28-36', and it's a huge project that I would not recommend as a DIY project 99.99% of the time. I would also suggest that making a financially responsible case for having a pro do it for you is also pretty difficult.

Rotten roofs and walls send more RVs to the scrap yard than all other reasons combined.

The .01% of the time where I might endorse the project to a DIYer, would be if he had a place to work on it inside an enclosure, lot's of time he's willing to commit to the project, and a history of accomplishments with similarly large projects.

The materials aren't cheap, but they are not what would slow most people down. This project is about labor. Lots of it....

If you are looking at this project as part of something you are purchasing, save yourself the heartache of finding out about this job the hard way.

If you already own it, get some estimates on the repair and see if you can make financial sense of it? Using that knowledge might also tell you if you might be interested in taking the job on yourself.
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Old 08-27-2014, 08:08 AM   #5
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We replaced the rubber roof in 2008. Use the link below to read the project info & summary. The project is not hard, just time consuming.
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Old 08-27-2014, 09:33 AM   #6
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We are looking at a used 2000 Newmar diesel. Inside it is beautiful and the floor plan we want. Diesel is a 260hp. 35ft 6 in. Roof has two spots that are slightly soft. Over driver's area and over passenger rear bedrm. small spots and as soon as they realized it was there, they fixed caulk.

There is no dipping or holes or water collection. The rest of the unit is so nice and the price is good. I told the guy No thank you but am reconsidering. I have no problem getting it done professionally, I don't want to do the physical labor myself.

I am wondering since you can't tell there are soft spots and the guy was honest enough to tell us about it if we could just get the roof resealed and call it good?

Thank you, Lynne
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Old 08-28-2014, 02:15 AM   #7
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My Motorhome is an older 1990 34 feet long with no slides. It has an Alpha Systems rubber membrane roof. The rubber roof was getting old, it had a few leaks and a few small rips in it, it was exposed to 20years of hot CA sun, it was chalking off and every time it rained more of it chalked off sending large ugly streaks down the side of the motorhome. I felt it was totally necessary to recover it.

The first thing I did was take the 2 AC housings and the fridge cover off, I didn't take the ACs off like some people do, just the covers. I also removed the TV antenna, I purchased a new digital one that I haven't put on yet.

Next, I pressure washed it with my pressure washer hooked up to my garden hose turned on full blast. The next day I pressure washed it again to make sure I got all the dirt off, then I let it dry 24hrs. Next, I had to scrape off the putty that was around the 2 air vents, 2 waste water tank vents, the luggage rack/latter, the fridge vent, the TV antenna mount and the radio antenna mount. I also had to scrape off the silicon that was put on from a previous repair job. I let the thing sit in the hot summer sun all morning and the putty got soft and was easy to scrape off with a putty knife and a wire brush, the silicon was harder to get off. I also had a few bubbles in my rubber roof that I had to cut with a razor blade, I put some liquid nails under the cut flaps to make it nice and flat and let dry for 6 hours. My rubber roof has a bit of a dome shape, not a flat roof like most newer RV roofs, so put some spare painter's tape I had lying around the garage along the side edges of the motorhome.

Next I put on flexible bond tape around all the vents, both antennas, and at the front and back where the rubber connected to the front cap and in the back where it ended along the back edge. I put it around the luggage rack tubes and I also used tape on all the rips and where I had to fix the bubbles. I cut the 3" tape in half using 1 1/2" strips where possible and used 3" where needed.

The next step was to put on primer, I mixed my flex primer and covered the entire roof including the tape using a paint roller and a paint brush. It only took 1 1/2 gallons of primer to cover the whole thing. I let the primer dry for 48 hours.

Next I used Liquid Rubber (5 gallon tub). I mixed it up with a mixer attached to an electric drill moving it around the tub for 15 mins. I then covered the entire roof with the liquid rubber. I put it on in 3 coats waiting 24hrs after each coat. I coated it around the AC units as best as I could with a paint brush. I also used a paint brush to put it around all the vents including the 2 waste water tank vents, over the antennas mounts and along the sides and anywhere I had tape. I used a roller to cover the entire roof. After the 3rd coat I let it dry for 48 hrs. I cut the painter's tape off the sides with a razor blade and then used a paint brush to apply a thin coat of liquid rubber along the sides where I had cut off the painter's tape to get a good seal to the metal piece that runs along the edges. I used about 4 Gallons of Liquid Rubber to do the job. I have 1 gallon left over for touch ups or future repairs if needed. I next put the vent covers back on. I painted the housing of the fridge cover with white spray paint I already had. I pressure washed the AC housings and put them back on when they were dry.

Done! It looks great. It should last 25 more years!!

Here is a list of things I had to buy. I did all the labor myself, it wasn't very difficult. The hardest part was scraping off the putty sealer and the silicon. Putting the primer and the liquid rubber on only took about 40 mins per coat.

Materials List:

F1501/2 Proflex Primer 2 Gallon Kit--cost $159.99--> F1501 2 ProFlex Primer 2 Gallon Kit | eBay

Liquid Rubber Smooth Sealant 5 Gallon Tub (white)--Cost $239.99 + $65 shipping and hazardous matierials charge = $304.99--> Liquid Rubber Smooth Sealant €“ Liquid Rubber Online Store

Eternabond RoofSeal Black 3" x 50'--Cost $44.88---> Eternabond RoofSeal Black 3" x 50' - Roof Flashing - Amazon.com

Liquid Nails from Home Depot--cost $2.98 + $.22 tax = $3.20--> Liquid Nails 10 oz. Heavy Duty Construction Adhesive-LN-903 at The Home Depot

5 gallon mixer from ebay--cost $6.50 + $3.29 shipping = $9.79---> http://www.ebay.com/itm/5-GALLON-DRI...vip=true&rt=nc

Paint roller/tray and 2 cheap paint brushes from my local hardware store--cost $12 + .90 tax = $12.90

Total Cost $535.75

I just finished it 3 days ago. I haven't taken any pictures of the finished roof yet but I can post some later if you want to see.

Good Luck
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