The first rail is 1 2 and is placed 4 feet from the house.
Under deck roof pitch.
Lower than the purlin along the house 12 x 1 4 3.
The slope or pitch of the under panels can be at any degree that will shed the water.
Find under deck ceiling systems at lowe s today.
However you can only use this pitch with built up roofing or specialized synthetic roofing.
Under deck ceilings a number of recently introduced under deck ceiling systems use corrugated aluminum or plastic panels designed to catch water that drains through decking and channel it away from the area below.
If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in.
Install the purlin along the house and the outer purlin.
You have to do it thoroughly so that the rafters sit flush on it.
Step 2 install a wood support structure for your panels screwing a row of 2 by 4s running parallel to your wall every 2 feet along the underside of your deck.
For a house roof the recommended minimum slope is 2 5 vertical inches for every horizontal foot but a nearly flat roof is fine for under deck installations.
If you consider it as similar to a roof than according to code.
While a typical deck is designed to support 55 pounds per square foot psf a roof requires 80 psf of support.
Among the newest is the raintight system introduced at deck expo 2014.
Minimum slope is 1 4 inch vertical in 12 units 2 slope and ideally 1 2 vertical in 12 units 4 slope.
Attach the horizontal beam by using a nail gun.
The underdeck ceiling system can turn the ugly space under your deck into an outdoor haven that s dry bright clean and enjoyable without costly reconstruction.
To solve this problem you can either replace your original deck footings to support your new roof or build your roof separate from your deck to ensure a proper foundation.
What makes the underdeck ceiling so innovative is its simple and efficient system of vinyl gutters and panels which attach underneath the deck.
Measure the depth of the deck and divide the total in feet by 4 since a pitch rail is needed every 4 feet.
10 foot deck 10 4 2 5 round down to a whole number.
This is for metal roofs that have a sealant between their lapped seams.
First mark all the purlin locations on the deck joists.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Raintight panels are made of heavy gauge aluminum.
Then stretch a string between them.
