Hi thanks for the interesting blog.
How to build a deck above a flat roof.
Step 3 prepare the materials.
Building a deck over a flat roof is very similar to building a deck over a concrete patio.
But here it s a little bit more of a challenge.
They are merely placed on top of another structure.
You ll most likely be able to build the deck on that.
Either way the roofing has to be right.
A properly constructed epdm roof should last 40 or more years.
That means there are 4 slopes leading the rain or melted snow water to the drain.
Even if your roof has a slight pitch you can level it off through the construction of the deck s understructure.
Still leaf debris and organic matter that gets through the slats in the decking will build up on the rubber roof and hold moisture.
Step 2 order materials.
I am also planning to make a deck on my flat roof but i have some questions.
The thing is that the roof draining is through a hole in the center of the roof.
How vinyl waterproof decking benefits roof decks.
First you must make sure the roof is strong enough to support 55 lbs per square foot.
A 1 5 inch thick rim joist cannot support a 3 5 inch thick post above.
Obtain the requirements for a deck above a sloped roof from your jurisdiction s permits office.
Framing the roof place the sleepers.
So i will not be able to put the sleepers parallel to the slope.
That said a lot of people subcontract the roofing work and build the deck themselves.
These decks are often referred to as floating as they are not secured in place as a stand alone structure.
One of the challenges in building a deck on a roof like this that s unlevel is the deck needs to be level.
It s reliable it s fairly easy to work with and it requires no special tools.
It s best to build the wooden deck in removable sections for cleaning and maintenance of the rubber roof and repair of the membrane if ever needed.
Strips of 4 in wide epdm provide a layer of protection between the sleepers and the roof.
The joists of the deck as with most flooring will be set out on 16 inch centers.
To avoid any modifications to the existing deck below or to facilitate future replacement of the deck below.
To simplify a construction.
There are a few things that make pvc decking different in regards to roof decks.
Cut four 1 foot lengths of 2 by 6 lumber for your sill plates which act as bases to support each end of a.
Now unlike your backyard that may be unlevel when you re building a deck you can set your post and adjust your framing nice and level.
Blocking must be installed adjacent to the rim joist.
Be sure that the deck floor frame is at least as thick as the entire cross section of the post above and below.
Relay to your architect any special.
Step 1 simplify the project.
How to build a deck on a flat roof.
Step 4 assemble the deck.
If you d like to build a deck over your roof make sure the roof has a covering that allows water to run off.
