• Medium to Heavy Commercial
  AAT 675, AAT 275 or AAT 295
• Light Commercial
  AAT 275 or AAT 295

• Trowel Recommendations
  1/8 x 1/8 x 1/16 U or Square Notch
  (as listed in CRI 104)
• Spread Rate
  6 to 8 sq. yds./gallon

A notch depth of up to 3/16" might be required when installing some woven and unitary backed products and other carpets with deeply textured backs. A sample installation should be made before every job, so as to ensure that a 100% adhesive transfer to both the cushion and the carpet, including the inner recesses of the back, is achieved.

Floor preparation, environmental conditions, and proper conditioning of all installation supplies, including the carpeting, padding, and adhesive, must be in strict compliance with CRI-104 or CRI-105, whichever is applicable.

Carpet and cushion must also be installed with the approved and recommended procedures as defined by the appropriate manufacturer.

NOTE: If any questions arise as to what trowel or exact procedure should be employed, samples of both carpet and pad, along with complete sub-floor information, may be supplied to AAT prior to installation start-up.

• Trowel Recommendation
  1/16 x 1/16 x 1/16 Square Notch Trowel

Lay pad into adhesive when adhesive is transparent for full release. Laying cushion into hazy white or milky adhesive results in a stronger, more aggressive bond.

Release installations may not be appropriate with some carpets and/or cushions. Consult AAT regarding specific recommendations for woven, unitary backed, multiple needle bar graphics, other stiff backed carpets, and all installations over prime urethane or bonded cushions.

Permanent Installation
AAT 675, AAT 275 or AAT 295

• Trowel Recommendation
  1/16 x 1/16 x 1/16 U or Square Notch
  Use tacky method (1-1½” legs on finger touch) for installation.
• Spread Rate
  18 to 20 sq. yds./gallon

Seam Sealers

• AAT 158 (water based) dual purpose latex seam adhesive, designed for seaming with or without tape.
• AAT 125 (non flammable) solvent based seam adhesive (Contains no 1,1,1 Trichloroethane)
  1/8" bead on all seams where hot melt tape is not used.
• AAT 150 white latex seam adhesive
  Should be applied to both trimmed edges prior to hot melt seaming.
• AAT Super DS hot melt tape
  Provides greatly improved seam integrity and therefore is recommended, especially in areas of heavier traffic, including pivotal areas and those subjected to roller traffic and/or frequent cleaning. This hot melt tape is specifically designed for double glue installations and can be placed directly into the bed of wet adhesive at the time carpet edges are joined. This tape maintains a low installation profile, uses no silicones as release agents, and offers excellent bond strength.
  

Other Double Glue Installation Tips

• Cushion should be laid at right angles to carpet direction. If this is not possible, a minimum of six (6) inches should be maintained between pad seams and carpet seams.
• The tacky installation method should be used for carpet to pad, minimizing the possibility of wet glue being pressed into the carpet’s secondary backing construction and also the potential for bubbling due to moisture evaporation.
• The wet installation method should be used for woven carpets of 100% synthetic materials. This allows for easier adjustments in pattern match. Floor fans can be used to help reduce necessary open time of the adhesives used.
• Cushion should be pressed into the adhesive by using a carpet core or back edge of an industrial broom. Carpet to pad should be rolled in North-South-East-West directions using a 35 lb. roller, or the equivalent, with weight not to exceed 35 lb.
• The installation should be protected from all traffic for 24 hours, and from heavy and/or roller traffic, as well as heavy object placement, for up to 72 hours. Traffic on wet, uncured adhesive can cause bond failure, which may not become apparent for months after occupancy.
• The cleaning and maintenance program for this type installation must meet carpet manufacturer’s specifications and/or IICUC Standard S001. Overwetting and use of chemicals with a 9.0 or higher pH level must be avoided.

Padding Recommendations

• Sponge Cushions, Inc. (Tred-Mor)
  (products 1562, 2568, 2580)
• Loadmaster Series by Foamex
  (products CX1560, CX2570, CX2590)
• Double-Set Contract by GFI
  (products 2562-48, 2580-48)
• Daltonian Classic by Daltonian Carpets & Cushion
• Polylaminate Cushion by Fairmont Corp.
  (10 lb. min. density)

• Milliken Sommer
• Multi-bond Commercial by Scottdel, Inc.
  (10 lb. min. density)
• Dura Tract and Long Life by
  No-Muv Corp.
• Super Brute Commercial by Crest Foam (35 lb. density)
• Shaw DuraTech Cushion Underlayment
• DURA Undercushions Ltd.

AAT Products For Your Double Glue Installations

• Advanced Air Tech 275
  Ultra Premium Adhesive
  (Permanent)
  A latex resin emulsion, this quick grab adhesive with ultra strong bond is designed to maximize installer efficiency for double glue, woven, unitary, and attached cushion projects.

• Advanced Air Tech 335
  Double Stick Adhesive
  (Releasable)
  Use this non-flammable, pressure-sensitive adhesive in spread or spray application for releasable double glue down installations. Not designed for carpet tiles with PVC backs.

• Super DS Seam Tape
  This low-profile tape features a non-silicone back with no selvedge edges. Designed to lay directly into the adhesive bed, Super DS offers superb strength. It prevents shrinking, improves seam integrity, and virtually eliminates any raised or visible area at the seam.