Building a deck over a flat roof is very similar to building a deck over a concrete patio. … Then, you will install “sleepers” or flat 2x6s laid flat every 16” on top of the roof surface. This will provide the surface for you to attach the decking.
Can I build a deck over a roof?
Unless you are a professional contractor by trade, you should not attempt to build a deck on your roof. Improper design or implementation during any step of the process could result in serious injury, catastrophic damage to your home, or even death.
Is my roof strong enough for a deck?
To safely install a roof deck, the roof needs to be able to support about 55 pounds of weight per square foot in general. … For instance, if you plan on installing something heavy like a planter or a hot tub, the deck and roof may require additional load-bearing capacity.
How much weight can a rooftop deck hold?
How Much Weight Can A Flat Roof Hold? California building code sets minimum standards for roof load-bearing capacity. At minimum, any roof which may be used by maintenance workers must hold 300 pounds concentrated. Concentrated means that this weight can be held by any one spot on the roof.
Can you put decking on a flat roof?
Many before you have asked the question, “Can you put decking on a flat roof?” – and the answer is yes. That is assuming that your roof is strong enough to support support the weight. You’ll want to start with consulting a local contractor to make sure the surface is fit for decking.
Do rooftop decks leak?
Often, however, this is not a worst case scenario: because so many roof decks are situated above the walls and ceiling of a residence, roof deck moisture intrusion that can cause critical and costly structure leaks a house or apartment.
Should I put a roof over my deck?
Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch. … As a result, most decks have inadequate footings to support a new porch roof. The footings for porch decks must be larger than deck footings.
Do you need planning permission for decking on a flat roof?
Please note that if you want to build a veranda, balcony, decking area or raised platform in the grounds of a flat then planning permission will always be required. In addition if a building to which it relates is a listed building, then both planning permission and listed building consent would be required.
How do I know how much weight my deck can hold?
To determine the maximum load capacity of your deck, start by calculating its total area and multiply by 50 psf. So, a 100 sqft deck would be designed to support 5000 lbs. Do not get confused with what weight you might think or want to load the deck with.
How much weight can a concrete roof deck hold?
When completely healthy and showing no signs of wear and tear, a concrete roof can safely support around 1,200 pounds (0.54 t) per square foot.
How much does a roof deck weigh?
B roof deck can be manufactured in the following gauges: 22, 20, 18, & 16. 22 Gauge is the lightest, weighing 1.9 pounds per square foot. 16 gauge is the heaviest, weighing 3.5 pounds per square foot.
B Deck Gauges.
|Gauge||Weight Per Square Foot|
|18||2.82 to 2.90|
|16||3.5 to 3.54|
Can I turn my flat roof into a roof terrace?
In most cases, an existing flat roof will be used to create a roof terrace. In concrete or steel frame buildings, the existing flat roof is likely to have enough structural strength for a terrace, because the roof is constructed like the floor structures below.