Rafters attach the beam to the house roof framing. The slanted roof slopes downward from the existing roof. SlantedĪ slanted roof is one of the most common deck roofing choices. The deck roof can either be framed with trusses or rafters that attach to each beam. You must then connect the beams to the house roof framing. This type of roof is more complex to build because it requires two beams perpendicular to the existing roofline. Here are the most common options for a deck roof: GableĪ gable roof is ideal for situations where slang roofs are not possible due to low rooflines. The style used is usually dictated by the location of your deck in relation to the existing roof of the house. There are several different styles of roof that you can put over your deck. If you already have appropriately sized posts supporting your deck, there is the possibility of integrating existing deck posts with the roof posts however, in most cases, the deck roof will require new footings. The rafters will support the roof itself and connect the beam to the house. A beam will connect the posts and will be sized according to the local building code. The posts will need to be on concrete footings, deep enough to go beyond the frost line in your area. Therefore, adding a roof’s weight onto a deck negates the structural integrity of the deck.Ī deck roof will need to be supported by posts and a beam. Load tables for joists and beams consider 10 psf dead loads, which is the amount of lumber used on the deck alone – not a deck and a roof. For instance, you cannot rely on your deck joists or beams to support your roof as well as your deck. Potentially requires digging new footings for roofĪ deck alone can never support a roof.Keeps outdoor items dry, such as clothes, furniture, and barbecue.Can act as a greenhouse with certain types of roofing or siding.Weather protection – rain, snow, and sun.While a roof over a deck may not be ideal for all geographies or homes, having a covered space on the exterior of your house is practical for a variety of reasons: Or, for those who live in very sunny and hot areas, it makes outdoor living more bearable by providing permanent shade. Should I Put a Roof Over My Deck?Ī roof over a deck is a great option for people who want to use their deck – rain or shine. The roof is supported by beams and posts on the exterior, which are anchored to the ground – not the deck structure – with concrete to provide a stable foundation. It can cover a screened-in area to create a porch or just act as a covering to your deck for shade and all-weather use.Ī roof covering the deck is framed similarly to a house roof and connects mechanically to your house wall or roof. Do I Need a Permit to Add a Roof To an Existing Deck?Ī deck roof is a roof that connects to your existing roof and covers part or all of your exterior deck.How Much Does It Cost to Build a Roof Over a Deck?.How to Build a Gable Roof Over an Existing Deck. How to Build a Roof Over an Existing Deck: Step By Step.
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