There is not much you can do about the slope of the roof surface.
Rubber roof under deck.
Then stretch a string between them.
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.
First mark all the purlin locations on the deck joists.
Deck over rubber roof.
Basicly making the support areas penetrations consult or hire roofer for this part.
Dexedry rubber flanges fit into flanges grooved into the edges of decking boards.
Comments for building a floating deck on an epdm rubber roof surface.
Dexedry flanges are designed to act as spacers between boards and also as mini gutters to channel water toward deck edges.
Rooftop deck flooring is specially designed to not puncture or tear the waterproof membrane of a flat top roof.
Incorporate the actual support blocks into the roofing system then build the deck from your support blocks.
Install the purlin along the house and the outer purlin.
Michael chotiner hometips.
That means water will pool somewhere over such a large surface.
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.
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.
Lower than the purlin along the house 12 x 1 4 3.
Therefore allowing drainage under the deck.
The rubber flanges are pounded into decking edges with a rubber mallet.