Installation Instructions

10.4 Proper Seam Characteristics

With any seaming method, a properly constructed seam:

 has cleanly trimmed edges properly secured with edge/seam sealer

 has tightly abutted edges without gaps or overlaps

 maintains reasonable pattern match where applicable

 will not be invisible

11.0 Stretch-in Installation

This method involves installing carpet under tension over a separate cushion, using

tack-strips fastened at all walls and other vertical abutments around the perimeter of

the area.

11.1 Tack-strip

It is required that tack-strips be a minimum of 1 inch (25 mm) wide and ¼ inch (6

mm) thick (Refer to Table III). Architectural strips, 1 ¾” inches in width (50mm)

with 3 rows of pins, or 2 conventional strips with 2 rows of pins each, are required

for stretching areas exceeding 30 feet to provide secure attachment of the carpet

and additional shear strength. To prevent possible injury to occupants, it is

required that the pins on tack-strips not protrude through the carpet being

installed.

Additional tack-strip installation specifications include:

 Securely fasten tack-strips to maintain the tension provided by power

stretching. Nailed or stapled tack-strips are required to have a minimum of 2

fasteners per piece.

 Place tack-strips with the pins angled toward the vertical abutment.

 The gully, or distance between the tack-strips and vertical abutments, is

required to be slightly less than the thickness of the carpet but not exceed ⅜

inch (9 mm).

 Avoid installing tack-strips across door openings and/or sills. Cut tack-strips to

follow the contour of door casings and other irregularly shaped abutments.

 Do not staple carpet to tack-strips.

 On radiant-heated floors, use manufacturer’s approved adhesive to secure

tack-strips. To prevent damage to the heating system, do not use nails or

screws.