If the distances around your deck are too long for a single piece of 2x4 to span you will need to segment the rail and install a 2x2 picket for each seam to support the bearing.
How to build a deck above a slightly sloped roof.
In this article builder emanuel silva shares his method for building such a deck which begins with a leak proof low slope roof of epdm rubber.
Hardwood decking is then fastened to tapered pressure treated sleepers that rest on additional strips of epdm added to protect the roof from abrasion.
Then run joists connecting the front of your roof with the rear every two feet along the length of your roof.
By john fenton n b canada i want to build a deck on a sloped roof.
How do i flash between post and roof.
Building a deck on a sloped roof.
The roof must be able to support 55 pounds per square foot at a minimum.
Since most roof decks are floating structures that sit on top of flat roofs it s crucial to weatherproof the roof below the deck to prevent water from seeping into the home.
Instead a pair of beams rest on supports called sill plates to create a frame for the deck.
Before installing a roof deck you must be certain the roof is stable and weatherproofed.
Then cut your 2x4 top rail pieces.
A deck on a sloped roof requires a different approach to the framing underneath the joists.
Roof deck framing unlike for decks at ground level doesn t entail a ledger attached to the rim joist of a house.
A standard railing height is between 36 and 42 inches so cut your balusters to the proper height.
Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber.