Installation Instructions

CRI 105 - STANDARD For INSTALLATION of RESIDENTIAL CARPET

Broadloom Carpet

10.2.2

Seam Sealing (direct glue down only)

Apply a bead of seam adhesive to the cut edge of one side only in sufficient quantity to seal

both trimmed edges. Ensure the bead thickness is sufficient to cover the primary and

secondary backing without contaminating face yarns (See Figure 1). In order to weld the

seam edges together, join the edges while the seam adhesive is still transferable.

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.