How To Slope A Roof Deck

If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in.

How to slope a roof deck.

For an 8 0 deep deck you should use a minimum slope of 1. I had tapered insulation installed a few years ago on a flat roof on a house i used to own. In this article builder emanuel silva shares his method for building such a deck which begins with a leak proof low slope roof of epdm rubber. Cut four 1 foot lengths of 2 by 6 lumber for your sill plates which act as bases to support each end of a pair.

The slope was about 1 in 4ft. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials. Obtain the requirements for a deck above a sloped roof from your jurisdiction s permits office. Then we were able to correct the owner s ponding water concerns.

Roof slope created a simple and great fix to a project were crickets were missed and ponding water became an issue for an owner. I don t know how this would stand up to being used as a deck to be regularly walked on though. Building a deck above a porch roof allows for sheltered space below and views from above. To slope your brothers deck properly you ll have to remove the existing decking and install sleepers to obtain the required slope.

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. To provide drainage the panels should slope toward the outside edge of the deck about 1 4 in. It was installed on top of the existing roof and then new hot rolled asphalt roofing installed over that. Plan to space the 2x4 purlins parallel to the house and 3 ft.

Lower than the purlin along the house 12 x 1 4 3. The minimum pitch for. A standard 12 3 6m deck dropping 18mm from the house to the edge of the deck. Roughly 1 16 1 5mm per foot a timbertech deck should be sloped.

Hello on a flat roof with slope 1 4 per foot or less if the roof deck flutes are parallel to the span and the supporting beams are perpendicular to this is it customary to install the beams plumb or slightly out of plumb so that the slope of the beam top flange matches the roof deck slope. Match roof material and use appropriate slope match the roofing on the covered porch with the main roof. Timber tech composite decking is one of them. To aid water run off the deck should slope 1 2 for every 8 away from the house.

We were able to make new crickets to the existing roof membrane providing positive water flow to the drains. Brhans jul 24 17.