How Many Polycarbonate Roofing Sheets And Accessories Do You Need? - Tuflite Polymers

Are you planning for a new roof, a patio, a pergola, a carport, or anything similar? The best material you can use to build the roofs of such structures is polycarbonate. And, when you want to build a polycarbonate roof, you will have to calculate as to how many roofing sheets you will need. When you choose the polycarbonate sheet you want to choose – the type, the colour, the texture, and the finish – you will want to place the order of the right number of sheets. You wouldn’t want your work to be hindered because of the shortage of sheets, would you?

Calculating the number of sheets you will require

A standard polycarbonate sheet is generally 800-850 mm in width, but after the overlap, the width that is left for usage is only around 750mm. You will 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 that is 5m long, you will need 7 sheets (6000/750 = 6.66)

Note – If you have a gable roof structure, you will need to double the number of sheets so that you can cover both the sides with roofing.

Calculating the length of sheets you will require

Once you have got the number of sheets worked out, you will need to determine the length of sheet you need. For this, you need to consider the angle of the roof. Run your tape measure along the long length of your rafter, and add 50 mm allowance for overhanging into the gutter. This will give you the length you require. Generally, a 5 degree fall is required from the top of the structure to the gutter. Polycarbonate sheets are generally sold in increments of 300-600 mm lengths.

Determining the roofing accessories

• Along with the roofing sheet, you also need the right roofing accessories. Calculating how many fixings you will need for your roof is also important. Roofing sheets are supported by timber or steel members known as purlins. The purlin size and spacing follow the specifications of the roof sheets that you are to install. Keep all the purlins at equal spacings, under the maxixmum available spacing to give your roof a uniform look, without exceeding the maximum specifications of the sheets.
• You also need screws to fix the sheets in place. You will need to pre-drill a 10mm hole to allow for expansion and contractions of the sheets that will occur with temperature changes, before inserting the screws. To calculate the number of screws you will need, you must multiple the square meter measurement of your roof by 8.
• Next, you require a purlin tape, which is a strip of foam having an adhesive on one side, which sticks to the top of the purlins. This helps in keeping the expansion noise of the roof sheets to the minimum. A single roll of purlin tape measures 20 meters, so accordingly you can buy the number of rolls you require.

Get all your roofing sheets and other requirements from a reputed and reliable supplier like Tuflite Polymers, where you are sure to get only the best quality materials, no matter what kind of sheets you require – solid, textured, profiled, corrugated, or multiwall polycarbonate sheets in India.

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