There are several commercially available under deck drainage systems including some that can be retrofit to an existing deck but on new decks i prefer to fabricate my own system using an epdm synthetic rubber roofing membrane and standard aluminum gutter parts.
Rubber roof under deck.
Deck over rubber roof.
Lower than the purlin along the house 12 x 1 4 3.
Dexedry rubber flanges fit into flanges grooved into the edges of decking boards.
There is not much you can do about the slope of the roof surface.
Without any slope you are going to have to entirely rely on the integrity of the epdm to protect your roof.
Then stretch a string between them.
Michael chotiner hometips.
Basicly making the support areas penetrations consult or hire roofer for this part.
Most modern flat top roofs are sealed with a single ply rubber membrane that is meant to protect the roof from leaks and water damage.
Although it s a waterproof roofing material it has an extra quality.
First mark all the purlin locations on the deck joists.
Install the purlin along the house and the outer purlin.
The rubber flanges are pounded into decking edges with a rubber mallet.
Therefore allowing drainage under the deck.
Incorporate the actual support blocks into the roofing system then build the deck from your support blocks.
Comments for building a floating deck on an epdm rubber roof surface.
We all know the different types of roofing material asphalt wood metal etc but there s one type of roofing material that s just a bit different than the rest.
Dexedry flanges are designed to act as spacers between boards and also as mini gutters to channel water toward deck edges.