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Prior to starting the siding, you should install the window and door trim, and the J-channel at the soffit. This is particularly important if you’ve never worked with vinyl before, as having a little bit of waste means that you don’t need to worry as much about potential mistakes." One pro tip from, Jeff Guthrie, of Phoenix Roofing & Repair is "In most cases, you may want to add in an additional 10% to 20% to your final numbers to account for waste. Subtract this number from your total square footage to get the most accurate amount. Now take the measurements of each window and door and do the same. Round to the nearest whole number, and add up all the various sections. Multiply the two measurements together and divide by 144 to get the total number of square feet for each section. Take the length and width, in inches, of each section you’re installing the siding. Order too little, and you may end up with a delay in the job while you wait for more.Įstimating square footage is simple. Have too much, and you may need to pay restocking fees or find a place to store it. Purchasing the right amount of siding for the job is an important part of installation.
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