Step 5: Seam Together Adjoining Pieces

two people using an electric seaming iron to demonstrate how-to install carpet
Photo: Ryan Hulvat
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If you need to seam together two or more pieces of carpeting, you'll need an electric seaming iron, seaming weight, and roll of heat-activated seam tape. Plug in the iron and let it heat up. Butt the edges of the two pieces of carpeting tight together, but don't allow them to overlap. Lift up and fold back one edge of carpeting. Slide a length of heat-activated seam tape halfway underneath the edge of carpeting that's flat on the floor. Run the tape along the entire seam, making sure it's positioned halfway under the carpeting.

Lay flat the folded-back piece of carpeting, and check for a tight fit along the seam. Starting at one wall, slip the hot seaming iron into the seam. Slowly glide the iron between the two pieces of carpeting, activating the adhesive on the seam tape. Ask a helper follow closely behind with a seaming weight, and firmly press down on the carpet to adhere both edges to the tape.

As you work your way across the floor, you may have to stop occasionally and use the knee kicker to close up the seam.

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    More in Flooring

    Tools List

    • utility knife
      Utility knife
    • hammer
      Hammer
    • hand saw
      Handsaw or special wood snips
    • knee kicker
      Knee kicker
    • lever-activated stretcher
      Lever-activated stretcher
    • carpet tool
      Carpet edger
    • edge trimmer
      Wide-blade carpet chisel
    • seaming iron
      Seaming iron and seaming weight
    • electric stapler
      Electric stapler
    • portable carpet edge binder
      Binding machine

    Shopping List

    1. Carpeting

    cut slightly oversized to allow for final trimming



    2. Heat-activated seam tape

    used to bond the seam between two pieces of carpeting

    3. Carpet padding

    for installation under carpeting