Membrane metal and shingle roofs can experience night sky cooling that can depress roof deck temperatures significantly below ambient air temperatures.
The long dark loaded above roof.
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The wooden joists or beams over your garage help hold your roof in place.
If you have an attic over your garage these joists also bear the load of your attic flooring and any materials you store in the attic.
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More than that for some people it can also be functional as a mini shelter or a bbq shed place to relax after soaking in the warm pool.
Since a black roof absorbs and retains heat the summer is the absolute worst time to have one.
When membrane roofs and asphalt shingles are used it is typically necessary install rigid insulation above the roof deck or install air impermeable insulation below the roof deck.
Even without a second story the roof weighs a lot and load bearing walls bear most of the.
Every house uses load bearing walls to stabilize the structure and support the weight of the home above.
The north zone middle zone and the south zone are identified on the roof load zone map above.
This is one of the reasons why many black roofs are covered with other materials.
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No matter the reason the keys to a long lasting deck above a living space are the same.
If you need a storage area above your garage strong ceiling joists are necessary to support the added weight.
The north zone design live load equates to 40 pounds per square foot the middle zone equates to 30 pounds per square foot and the south zone equates to 20 pounds per square foot.
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There are tons of reasons to build a deck over a roof from creating a romantic outdoor breakfast nook off a second floor master bedroom to providing a second floor porch on a city house.
This downward imposed load on the home is also known as the snow load.
As an outdoor centerpiece a gazebo should be a beauty to look and fit with your patio.
With all the options you may find out there a hardtop gazebo can be the best solution to cover all the needs.
A black or gray modified roof is either painted with a reflective paint or is embedded with tiny white granules.
Since it is possible to use the attic for storage the live load of the attic floor is set at 20 psf according to code.
As a result the live load dead load and distribution of forces are different.
For example a black tar roof is often covered with gravel.