Installation Instructions

17
Figure 1
10.3 Seaming Methods
The seaming method depends upon carpet construction and backing type. Always
follow manufacturer recommendations for seaming. Seaming methods include
hot-melt tape and hand sewing.
10.3.1 Hot Melt Seaming
A seaming tape pre-coated with a thermoplastic adhesive is centered beneath
the seam. Tape is heated by a seaming device which melts the adhesive,
laminating the carpet backing to the tape. Seams should be made over a hard,
flat surface (i.e. seaming board). A carpet seam roller is recommended to
achieve proper penetration of adhesive into the carpet backing from the
seaming tape.
NOTE:
 Premium grade tape with high tensile strength, sufficient
adhesive on the woven scrim and a minimum adhesive width of 2
¾ inches is recommended.
 Rollers with star or spike design are not recommended for use
on hot melt seams, especially, cut or cut-loop constructions.
When using a seaming iron, a grooved iron is recommended for better
penetration of the adhesive. Proper iron temperature is essential to avoid
secondary backing distortion. Temperature settings will vary according to iron
and tape manufacturers. Always run the iron in the direction of the
pile. A heat shield is required.
A metal surface should not be used to weight the seam behind the seaming
device, as metal traps the heat and moisture. Wood or non-heat conducting
material should be used for this purpose.
Provide adequate ventilation to dissipate any fumes from the seaming process.
10.3.2 Hand Sewing
Hand sewing shall be overcast stitches placed not more than ½ inch (13 mm)
apart and no less than ½ inch from the edge of the carpet. It is recommended
that a latex coating and tape be applied over the stitching.