Replies

1. GBA Editor
   Martin Holladay | Apr 07, 2017 06:35pm | #1

   David,
   No.

   -- Martin Holladay

2. GBA Editor
   Martin Holladay | Apr 08, 2017 05:49am | #2

   David,
   Tarps degrade rapidly. Underground roofs require a heavy rubberized membrane like EPDM or a heavy peel-and-stick product or a pond liner -- and sometimes they require multiple layers of these heavy-duty membranes. They also require careful planning for drainage (using dimple mats, crushed stone, and perforated pipes.)

   What are you building that requires an underground roof?

   -- Martin Holladay