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How to estimate the number of polycarbonate roofing sheets and accessories you need?

Views: 861     Author: Site Editor     Publish Time: 2021-12-23      Origin: Site

How to estimate the number of polycarbonate roofing sheets and accessories you need?

Calculating the number of sheets you need

Are you planning a new roof, a patio, a pergola, a garage, or anything similar? Polycarbonate is the best material for the roof of such a building and there are many types of polycarbonate roofing sheets. Also, when you want to build a polycarbonate roof system, you have to calculate how many polycarbonate roof panels you need. When you choose the pc roofing sheet you want to choose – the type, the color, the texture, and the finish – you will want to place the order of the right number of sheets.


A standard pc sheet is generally 800-850mm wide, but after overlapping the remaining usable width is only about 750mm. You need to divide the length of your roof area by 0.750 to determine the number of sheets you need. So, if you have a structure 5 meters long, you will need 7 sheets (6000/750 = 6.66). In addition, if you have a gabled roof structure, you will need to double the number of polycarbonate panels so that you can cover both sides of the roof.



Calculating the length of sheets you need

Once you have determined the number of polycarbonate roof sheets, you need to determine the length of sheet you need. To do this, you need to consider the angle of the roof. Measure the length of the rafters with a tape measure and increase the drape by 50 mm. This will give you the length you need. Generally, a 5 degree drop from the top of the structure to the gutter is required. Polycarbonate sheets are generally sold in 300-600 mm length increments.


64.polycarbonate roof sheets 

Determining the roofing accessories

In addition to the polycarbonate roofing sheets, you'll need the right roofing accessories. It's also important to calculate how many accessories your roof needs. The roof panels are supported by timber or steel members called purlins. Purlins should be sized and spaced in accordance with the specification of the roofing slab to be installed. Keep all purlins at the same spacing to give your roof a uniform appearance at the maximum available spacing without exceeding the maximum sheet size.


You'll also need to screw the sheet into place. Before inserting the screw, you need to drill a hole of 10mm in advance to take into account the stretching of the sheet as the temperature changes. To calculate the number of screws you need, you have to multiply the area of your roof by eight.


Next, you need a purlin tape, which is a piece of foam with adhesive on one side that is stuck to the top of the purlin. This helps to minimize the expansion noise of the roof slabs. A single roll of purlin tape measures 20 meters, so accordingly you can buy the number of rolls you require.



Hangzhou Saining Polycarbonate Sheet Co., Ltd. was founded in 1997, it is a manufacturer that specializes in producing various kinds of high-quality roofing polycarbonate sheets (such as clear polycarbonate roofing sheets and polycarbonate sunshade roofing sheets) and roofing accessories.

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