How Much Of Drop Should Patio Roof With Plastic

To provide drainage the panels should slope toward the outside edge of the deck about 1 4 in.

How much of drop should patio roof with plastic.

Plan to space the 2x4 purlins parallel to the house and 3 ft. For example a 12 foot patio will need 1 inches of slope. Some building codes start at one quarter of an inch per foot or two percent. Lower than the purlin along the house 12 x 1 4 3.

However an ideal roof drop per foot should be at least one eighth to one quarter of an inch per foot. Cut to fit pitch of roof and around vent. However you can only use this pitch with built up roofing or specialized synthetic roofing. Apply front and back panels similarly to side walls.

Install vent as close to roof peak as possible. If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. One contractor said 1 1 4 1 1 2 inch we wouldn t notice but i find that really hard to believe and gave me question as to his integrity. The slope should be at least 1 inch for each 8 feet of patio.

Plastic patio pergola awning covers polygal roof panels clear patio covers for pergolas multiwall polycarbonate sheets often referred to by the brand name of polygal are a structured sheet product available in double and triple layered configurations and manufactured in various colors and degrees of transparency. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Measure the calculated amount of slope down from the string tied to the stake at the drainage end of. Roof pitch in layman s language simply refers to the steepness of the roof.

Fasten aluminum ridge roll flashing to each panel as you proceed. Determine the amount of slope needed for the size of the paver patio. Some additional considerations for this project. The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope.

Nail trim limber to all corners and to front and back where panels meet roof. I know the standard is to have 1 4 drop per foot but have you ever been on a patio with a steeper grade and it still get relatively flat.