My Mother's House Part III: Waterproofing Our Earth Sheltered House

Waterproofing is the most important challenge facing anyone who builds an earth-sheltered house.



072 Earth Sheltered House Part 3 - 8 cover
The earth-sheltered house as it looked after our waterproofing work. Next up is backfilling and installing cool tubes.
PHOTO: MOTHER EARTH NEWS STAFF
072 Earth Sheltered House Part 3 - 3 sheathing and gravel
A layer of sheathing was laid on top of the rubber and gravel was hand-poured onto the board.
MOTHER EARTH NEWS STAFF
072 Earth Sheltered House Part 3 - 1 elastomeric membrane
Applying the Carlisle elastomeric membrane is merely a matter of rolling the material out across a smooth roof.
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072 Earth Sheltered House Part 3 - 2 rubber cement
The edges of the EPDM sheet were sealed with rubber cement.
MOTHER EARTH NEWS STAFF
072 Earth Sheltered House Part 3 - 5 applying bentonize
Dr. McGroarty oversees the application of Bentonize.
MOTHER EARTH NEWS STAFF
072 Earth Sheltered House Part 3 - 4 covered sheathing
The rock holds the sheathing down and aids drainage.
MOTHER EARTH NEWS STAFF
072 Earth Sheltered House Part 3 - 6 covering the clay
Polyethylene protected the clay from rain prior to backfilling.
MOTHER EARTH NEWS STAFF
072 Earth Sheltered House Part 3 - 7 polystyrene insulation
Polystyrene insulation was glued on with dabs of Bentonize.
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072 Earth Sheltered House Part 3 - bedroom
The bedrooms are stud-frame construction, with 2 x 6's on the interior and 2 x 8's on the south-facing wall.
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