Make a cutting on one of the sides of the horizontal roof beam on an angle.
How to add a tin roof to a deck.
Attach 3 by 3 foot sheets of tin to each section of the frame using 1 inch steel hex washer head screws and a cordless drill.
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You have to do it thoroughly so that the rafters sit flush on it.
Those measurements minus the thickness of the purlins will give you the widths of the spacer blocks.
If you are tying the roof directly to a house wall you can install a ledger board with flashing and install rafter ties to attach the rafters at the appropriate angles or use engineered trusses.
The opposite side of the porch roof will be supported by a header beam that is installed parallel to the house on top of 6x6 support posts.
Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch.
This meant the patio cover could start at the edge of the house s roof at a height of eight feet and slope down to seven feet leaving a clearance of more than six and a half feet between the lowest part of the frame s headers and the ground at its outer edge.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
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These roofs are usually easy to install over a deck or patio just make sure you re not breaking any local building codes.
After that to make it flush with the roof of the existing house cut the two outer rafters.
Adding any deck covering or enclosure will typically cost between 1 000 10 000.
Attach the horizontal beam by using a nail gun.
Cut the spacer blocks and screw them to the bottom of the joists at the marks.
Typical decks are designed to support 55 psf lbs per square foot.
Adding a covered roof to your deck will typically cost between 3 000 10 000.
The cost will vary depending on the professionals hired materials used square footage and weather conditions.
Then attach the remaining 2x4 purlins by screwing them to the spacers.
Screw the steel hex washer head screws into the tops of corrugated waves of tin roofing material to prevent leaking through screw holes at the bottoms of the waves when rain runs down the roof.
Measure down from the deck joists to the string at the other purlin locations.
A metal deck roof will add shade and make your deck or patio space more comfortable during the hot summer months.
