Bob's Bunker Page 56

The house and the bunker share a concrete wall, so the rubber waterproofing membrane, that was laid on top of the concrete bunker roof deck, was extended up the back wall of the house, and under the bottom course of the siding. That left the rubber exposed below the bottom course of siding and leaving it vulnerable to puncture. To protect the rubber membrane from puncture we covered the rubber with the copper shown in the previous photo. Through out the project, everywhere the rubber membrane was exposed above ground, we used the copper to cover the rubber. There will be a concrete patio in this area behind the house, and during the winter the copper will prevent the rubber from being punctured by snow shovels and other snow removal tools.

Through out the project, we took extraordinary measures to protect the rubber waterproofing membrane so the bunker would never leak. As a result the bunker is as dry as it could possibly be. The neat thing about rubber is that when rubber is burried underground, it lasts almost indefinately because there is no oxygen or ozone to cause the rubber to decompose. Just think about how long tires last in a landfill or at the bottom of a lake.
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