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If you want to build a covered deck you will need some pretty intense plans. You can hire a private contracting company to build a deck for you, and they will design it for free.
A 'cold roof' has the insulation layer beneath the roof deckA 'warm roof' has the insulation layer beneath the roof deck
Well it depends how big your house is and how big you would like the deck and patio to be. However the average price to build a deck and patio is about $2000.
It is possible to build a roof deck it is built similar to a dormer in the roof space obviously bigger but the principle is the same. Depending on size and building regulations this will determine the cost. It can be expensive.ANSWERHow are you accessing it? The door threshold is one of the tricky places that can leak. A deck can actually be built right over a pitched roof with the correct technique. The strength of the existing roof members, water evacuation, snow build-up, existing roofing materials, where the railing, sleepers and joists will be secured, etc. are just some of the things to condsider. I've done some of these when intrusion into the building was not an option.
A good place to get plans for a roof over a deck is www.ehow.com Lawn & Garden they have great images and reliable information bout putting a roof over a deck.
It all depends on the type of existing roofing that is going to be demolished and the replacment with a deck. If the roof is flat it is cheaper but if the roof has a slope then a whole new flat roof is required to support the deck.
composite deck
Approx. 113 sheets
deck
It will take 46 3 x 8 sheets.
A bell deck is the floor of a belfry, made to serve as a roof to the rooms below.
Four sheets of 4' by 8' plywood will be required to cover a shed roof measuring 10' by 12'. Three of the sheets can be used as is, but one of the sheets will need to be cut to fit.