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| Roofing | ||||||||||||||||||||||||||||
| We made a change from the plans again. The plans show only the cricket done with EPDM rubber roofing, and the rest of the roof done with Pro-Panel (metal). When we spoke to our roofer, he didn't like the pro-panel idea. He thought that the roof was too flat and metal would require too many penetrations to be a good choice. Many other people have put the metal up, and I haven't heard of any problems, but it seemed that the likelyhood of problems was greater with the metal roof. Who knows. | ||||||||||||||||||||||||||||
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| We decided to do the entire roof with the EPDM, thinking that if we don't like it, we can put the Pro-Panel over the rubber. The first step is to put down "celotex" which is a fiber board that the glue can stick to. It is possible to glue the rubber right to the plywood, but the plywood must be screwed down instead of nailed so that a nail doesn't work itself free and puncture the rubber. We nailed our plywood. | ||||||||||||||||||||||||||||
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| The celotex also offers some sound deadening. It gets screwed to the plywood with plates that keep the heads of the screws from pulling through the fiberboard. The next step is to roll out a piece of rubber and cut it to size, always starting at the lowest, most downhill part of the roof. Next, we rolled half of the rubber sheet back on itself and put the glue on both the rubber and the fiberboard. It is a contact cement, | ||||||||||||||||||||||||||||
| so you wait for both surfaces to partially dry before you push the rubber back onto the roof. Being careful not to put any bubbles in, and making sure that all parts of the rubber and the roof have glue, we slowly pushed the rubber back into its permanent spot. Then we moved to the next lowest spot and did it again. Once all of the rubber was down, we taped the seams with seam tape, and caulked the seams with lap caulk. Just like that our roof was water proof. We were anxious for our next rain to see how well it worked. When it did rain, the roof sure did work, the only problem was that we hadn't framed or roofed the cisterns yet, so the water didn't have a good place to go! Instead, it flowed off of the roof, down the tires, onto the concrete and into one of our planters. This picture is | ||||||||||||||||||||||||||||
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| about half way through pumping the water out of the planter. We figure that there was between 300 and 400 gallons of water in it. Bummer. | ||||||||||||||||||||||||||||
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| Earthship Index |
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| earthpower1@yahoo.com | ||||||||||||||||||||||||||||