I ve been building wood decks with safe railings over flat epdm roofs on the rainy coast of maine for over 15 years without compromising the waterproofing.
How to attach railing to flat roof deck.
How to attach a roof deck railing.
Epdm or any type of flat roof necessary to build up.
That is how you would have been getting your strenth and support for the rails.
Deckshield is a pvc flat roof deck waterproofing material designed to be slip and puncture resistant and make roof decks completely watertight.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
With wooden or hot application decks attachment of the handrail posts and the ends.
Shed roofs project as a single plane roof pitched away from the house.
Typical decks are designed to support 55 psf lbs per square foot.
Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch.
Question answer q how can i mount newel posts to a deck on a flat roof without cutting into the roof.
Hopefully you have several points of contact to the home itself.
Dont let someone just bolt through the flat roof.
Build up pads to mount the blocking properly.
Assuming this roof was never meant to be a deck with railings you do not have posts going through the roof.
Flat roofs are more susceptible to leaking than pitched roofs.
For stability the sections of railing install between posts that attach to the roof.
Railings for roof decks provide safety and complement the design of a deck.
Now all your strenth must come from surface mounted rail system.
Paul nichter a contractor in islesboro maine responds.
If you are tying the roof directly to a house wall you can install a ledger board with flashing and install rafter ties to attach the rafters at the appropriate angles or use engineered trusses.
Those who have the expertise tools and equipment can notch and bolt wooden posts to the fascia board.
The posts for the deck can be mounted directly to the deck framing using lag bolts so that the railings will be stable enough to act as proper fall protection.