Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber.
Building deck on flat roof.
Building a deck over a flat roof is very similar to building a deck over a concrete patio.
Relay to your architect any special setbacks such as rules that the front of the deck start 8 feet behind the roof ridgeline or that the height of the deck be no more than 2 feet above the midpoint between the gable and the rear of the roof.
The roof must be able to support 55 pounds per square foot at a minimum.
You can use 2x material laid flat or 4x material also as sleepers.
Before installing a roof deck you must be certain the roof is stable and weatherproofed.
The thing is that the roof draining is through a hole in the center of the roof.
Then run joists connecting the front of your roof with the rear every two feet along the length of your roof.
These decks are often referred to as floating as they are not secured in place as a stand alone structure.
That means there are 4 slopes leading the rain or melted snow water to the drain.
Unfortunately many homeowners who have a flat deck roof have to deal with frequent leaks.
Hi thanks for the interesting blog.
You can do a floating deck and is really your only option.
They are merely placed on top of another structure.
On average 300 sq ft.
The standing water eventually seeped through and rotted the frame.
By incorporating the vinyl surface into the structure you re leaving much less room for water to find a way in.
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.
Obtain the requirements for a deck above a sloped roof from your jurisdiction s permits office.
Two people can install a brand new deck in a weekend with little or no previous construction experience.
May 7 2014 before we look at how to build a deck on a flat roof here s an example of what not to do as debris settled into the cracks of the gravel roof it became a muddy sponge and the sleepers became dams with big rains.
This is usually because low quality leak prone decking materials such as epdm rubber are used often in an effort to save money.
Inspect the roof to make sure it is in good condition and acquire any permits that may be required by the local zoning board.
When installed professionally a vinyl roof deck surface incorporates into the structure of your home condo or commercial development.
So i will not be able to put the sleepers parallel to the slope.
First you must make sure the roof is strong enough to support 55 lbs per square foot.
Before beginning however it is important to do two things.
Building a deck on a flat roof is neither difficult nor time consuming.
This method means that you get waterproofing from end to end not just on the surface.
Of roof decking costs 800 2 800 to install depending on the material you choose.
