How Much Of Drop Should Patio Roof With Plastic

Measure the calculated amount of slope down from the string tied to the stake at the drainage end of.

How much of drop should patio roof with plastic.

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. 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. A 16 foot patio will need 2 inches of slope. Roof pitch in layman s language simply refers to the steepness of the roof.

Anything less than one eighth of an inch may pool on the roof. Determine the amount of slope needed for the size of the paver patio. Some additional considerations for this project. Anything with a slope of some kind will cause water to run off the roof.

However an ideal roof drop per foot should be at least one eighth to one quarter of an inch per foot. Lower than the purlin along the house 12 x 1 4 3. Fasten aluminum ridge roll flashing to each panel as you proceed. Some building codes start at one quarter of an inch per foot or two percent.

If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. Plan to space the 2x4 purlins parallel to the house and 3 ft. Install vent as close to roof peak as possible. For example a 12 foot patio will need 1 inches of slope.

Nail trim limber to all corners and to front and back where panels meet roof. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Apply front and back panels similarly to side walls. The slope should be at least 1 inch for each 8 feet of patio.

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