Depending on the type of tape you use you might need to heat it for several minutes to begin activating the adhesive on the seam tape.
Carpet seam tape installation.
Follow the tape and iron manufacturer s recommendations for heating times.
When the carpet is stretched it is pulled where the edges of the tape are attached to the carpet and the two pieces lift to create a peak.
Place the carpet pieces to be connected upside down so that the carpet seam tape can be easily placed on the bottom of the carpet.
Carpet tape does make it possible to install multiple pieces of carpeting side by side and if you follow directions for installing carpet seam tape seams should blend with the rest of the flooring.
Position the seaming iron.