Resin
CA
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Joined: 07/03/2010
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Reference Rubber Roof Work:
I just sent Mr. L a PM. regarding your rubber roofing project.
Please read, and contact me. I'm interesting in possibly helping you with your roof!
Keith
Keith
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LLeopold
Camarillo, CA USA
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We had some torrential rain come through three weeks ago, then I was out of town two weekends ago, then more drizzle this past Saturday and I was finally able to get a couple of hours in this weekend when we had some sun break out and things dried out on top.
Fortunately, the tarp covering the outside kept a lot of the rain off and my caulk/seal/vapor barrier work revealed that the inside remained nice and dry.
I put the fiberglass cap back onto the fiberboard panel with contact cement and put the front running lights back on.
The roofing materials arrived last week, so I prepped the roof by trimming the old EPDM straight, sanding down all hard edges, cleaning any remaining debris from the wood underroof and and lay out the new EPDM membrane.
Then, as per the instructions that I downloaded from the web site, I booked half of the membrane.
Now, I had ordered both adhesive as well as adhesive primer. The instructions on the adhesive said that a primer was not necessary, but I wanted insurance that this membrane would solidly adhere to the wood underroof. Well, during the process of applying the primer on the first half, a gust of wind kicked up and flipped part of the membrane over (the gust was that strong).
Have you ever attempted to separate duct tape that folded adhesive side together? Well, this was 1000 times worse! I had a devil of a time separating the membrane; and this was only the primer! In the process of separation, I must have hit the can of primer as I heard it tip over and fall off the roof. This was my first mishap on this project. Well, at least it was the primer and not the adhesive itself.
I was able to finally separate the membrane, apply the adhesive to both it and the wood underroof, let it sit until dry to touch, and lay down the first half, working from the center to the outside to ensure that there were no air pockets. I then folded the second half and applied the adhesive to it and the wood underroof and then laid it down.
I followed up by running a push broom to smooth it out.
So, from the front and sides, here's how it looks. You can see where the primer spilled. I can clean that with some mineral spirits and elbow grease, though.
The next steps - apply the DuraBond to the seam where the old and new membranes meet, I overlapped the new membrane over the old by about 1/8 inch. With the DuraBond in place, I'll then reattach the metal moulding to the top and sides, then trim the membrane and apply DuraSeam over the metal moulding, rather than use lap sealant this go around.
After that, I'll give the roof a real good cleaning, apply DuraSeam over the rear metal moulding, then apply the liquid EPDM over the entire roof completely resealing and renewing it. The instructions on the liquid EPDM say to not remove the old lap sealant as that could potentially tear the old membrane and that the liquid EPDM will flow into any cracks in the current lap sealant. Whew! I'm glad of that! I was not looking forward to prying the old lap sealant as it's stuck in place and only has surface cracks and some separation in a few areas which should be filled in and sealed.
Stay tuned as the end is now in sight.
* This post was
edited 11/02/10 11:44pm by LLeopold *
Lou Leopold
2001 Dodge Ram 2500 Diesel Quad, SWB, 3.55:1, Rhino Lining
2000 25' Mallard M-23 5M 5th Wheel
Husky 15K w/EZ slider
Wen PowerPro 3500 Generator in a sound box
And I continue to tent camp!
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Hank MI
Brighton, Michigan
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Are you using Liquid Rubber or Liquid Roof? Same product, Liquid Rubber comes in a bright white, Liquid Roof is a slightly off white. If you haven't ordered yet Meridian Liquid Coatings has Liquid Rubber, 5 gallons, for under $300, Liquid Roof is $354.50. No shipping or handling charges. If you're using Liquid Roof it doesn't make much difference, only a few dollars. If it's Liquid Rubber then that's more than $50 difference.
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LLeopold
Camarillo, CA USA
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Hank, it is the Liquid Roof so the roof will be off-white, I suppose.
We had a real nice day yesterday, though with the threat of rain in the afternoon, so I used the opportunity to complete this particular phase of the project - the repair of the roof.
I let the adhesive cure for the past 7 days, so yesterday I applied the EPDM seam tape (EternaBond) to where the two rubber membranes meet. The shiny part was where I cleaned the old membrane with the EternaClean cleaner (you can see the spray can in the picture). This makes the EPDM very receptive when the tape is applied by removing any sap or other foreign material from the rubber surface.
The next step was to reattach the the metal moulding to hold down the membrane and the fiberglass cap and front panel, and trim the membrane. Where there was previously rotted wood underneath which caused the moulding, and later the membrane, to separate from the under-roof, I had some good, solid, bites in the screws with the new wood.
The result after applying the EPDM seam tape, rather than lap sealant. It was really easy to apply.
The look from the front; just like its old self (still some clean-up to do).
And the look from the top.
MUCH better! The repair is completed after 5 weekends of about 5-10 hours per weekend (about 35 man-hours total).
The next step is to give the trailer a complete and thorough cleaning, including the roof, which I'll probably do in two weeks (I have a commitment next weekend), then if the weather holds out, use the long Thanksgiving holiday weekend for the last phase by applying the Liquid Roof.
* This post was
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edited 11/07/10 09:23am by LLeopold *
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LAdams
Northern Illinois
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Excellent job Lou - looks good as new 
Now you'll have a nice dry trailer again Nice job on the Eternabond too - I have one more (rear) seam to do on mine and the skylight in the bathroom too - next season I'll get to that...
Les
2000 Ford F-250SD, XLT, 4X4 Off Road, SuperCab
w/ 6.8L (415 C.I.) V-10/3:73LS/4R100
Banks Power Pack w/Trans Command & OttoMind
2006 Nomad 3150 Double Slide (Bunkhouse)
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HUNTER THERMOSTAT INSTALL
HOME MADE WHEEL CHOCKS
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BarneyS
S.E. Lower Michigan
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Nice work Lou!  Not sure I would have had the nerve to tackle that big of a job. It really came out great and now you can enjoy a nice dry trailer that you know has been repaired right!
Barney
2004 Sunnybrook Titan 30FKS TT
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2002 Ford F250 Super Duty, 7.3L PSD
Visit our website here
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Grillmeister
Iconoclast
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I have been watching from the start, all I can say is ditto on the excellent job. Much better than having a shop slop it together. Extra nice job on the Eternabond, it is very neat looking. Thanks for letting us all follow along.
Enjoy, Gary
Show me the GRILL and STAND BACK!!!!
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Hank MI
Brighton, Michigan
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As said nice work, you really took on a big job. Coating the roof with the Liquid Roof will be the easy part.
Suggestion, make sure you have a 1/2" drill motor with a side handle to mix it up. The stuff is so thick it will rip the drill out of your hands and really heat up a 3/8" drill. I had to keep switching my drill from one hand to the other while mixing it. I just couldn't hang on to the drill for very long before I had to switch hands. Once mixed, not a bad job, just messy. Don't wear anything you want to keep, I took my shirt and pants off in the garage and threw them in the trash. Of course maybe I'm just a messy person.
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Grillmeister
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Hank MI wrote:As said nice work, you really took on a big job. Coating the roof with the Liquid Roof will be the easy part.
Suggestion, make sure you have a 1/2" drill motor with a side handle to mix it up. The stuff is so thick it will rip the drill out of your hands and really heat up a 3/8" drill. I had to keep switching my drill from one hand to the other while mixing it. I just couldn't hang on to the drill for very long before I had to switch hands. Once mixed, not a bad job, just messy. Don't wear anything you want to keep, I took my shirt and pants off in the garage and threw them in the trash. Of course maybe I'm just a messy person. Good suggestions, I also taped off the perimeter with some blue painters tape so I would have a nice clean edge. Removing the tape is kind of trickey, you have to remove it after it sets up a little bit, but if it sets up too long then when you are removing the tape it wants to pull up the edges and kind of string up like the cheese when you bite into a slice of pizza
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Hank MI
Brighton, Michigan
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I used the blue tape too, the wide stuff. Ran it down the side and curved it back up inside the gutter. If any runs down the curved edge of the roof the gutter made of tape will catch it.
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