How to Install Vinyl Siding at an Angle to the Roof


Vinyl siding is one of the most popular siding materials in the United States. Improvements upon the original technology have made vinyl siding more attractive and durable; and the product’s affordability and ease of installation are tough to rival. Vinyl siding is comprised of a series of rigid polyvinyl chloride channels and trim pieces, into which the more flexible vinyl siding panels are fitted. J-channel is installed along the sloping walls where the side of the house meets the roof gables. Then the vinyl siding panels are trimmed to fit into the J-channels.

Things You'll Need

  • Tape measure
  • Hacksaw
  • Corrosion-resistant nails
  • Hammer
  • Cut the J-channel to fit along the top of the gables beneath the rooftop. Use a hacksaw to cut the PVC J-channel to size.

  • Install the J-channel along the roof gables with corrosion-resistant nails. Drive the nails through the prefabricated nail slots that run along the length of the J-channel. Leave one-thirty-second- to one-sixteenth-inch of the nail shafts exposed to allow for the natural expansion and contraction of the PVC material.

  • Leave a quarter-inch between adjacent pieces of J-channel.

  • Cut the vinyl siding panels to the proper length and angle. Use tin snips to cut through the siding panels. Leave a quarter-inch of space between the end of each siding panel and the back of the J-channel to allow for expansion.

  • Attach the vinyl siding panels to the house frame with corrosion-resistant nails driven through the prefabricated nail slots along each panel’s top edge. Drive the nails directly through the center of each nail slot, and leave one-thirty-second- to one-sixteenth-inch of the nail shafts exposed.

  • Overlap adjacent siding panels by 4 inches. Work your way up, locking the base of each siding panel course to the top edge of the panel course beneath.

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  • Photo Credit House rooftop obove snow image by TekinT from
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