DOUBLE GLUE Installation (except CushionWorx / DuraWorx)

Notice: For best results review the following guidelines prior to installation. Shaw will not be responsible for improper installation and failure to follow these guidelines may result in limiting warranty coverage.
  
These installation procedures are intended to assist in the installation of broadloom carpet using the double glue method under most job conditions. See Shaw Industries and CRI 104 / 105 Broadloom Installation Guidelines for specific questions regarding installation not covered within or refer to Shaw Technical Support at 1.800.471.7429. Any variance from these procedures will become the responsibility of the installer and not the manufacturer. 

1. CONDITION YOUR SITE AND TEST 

A proper installation depends on the proper site conditions. The following conditions must be maintained for 24 hours prior to, during and permanently after installation.

  • HVAC System: Must be operational maintaining the following conditions.

  • Temperature: The installation site, carpet, underlayment and adhesive must be between 65°F and 95°F (50°F and 95°F for EcoWorx tile). The adhesive will not function properly when applied over an extremely cold surface. Do not begin the installation if the subfloor temperature is below 50°F.

  • Humidity: The installation site’s ambient humidity must not exceed 65%. (should not fall below 40% for EcoWorx tile).

  • ​Moisture: Refer to adhesive manufacturer's guidelines for moisture limits for installation.

2. PREPARE THE FLOOR 

The substrate must be structurally sound, clean, level and dry. The substrate must be free of dust, dirt, oil, grease, paint, curing agents, concrete sealers, loosely bonded toppings, loose particles and any other substance or condition that may prevent or reduce adhesion.
 
NOTE: Do not sand or scrape Vinyl Asbestos Tile (VAT) without proper attention to abatement procedures and precautions in accordance with all state and local codes. Shaw Industries makes no claims as to the acceptability of this procedure as a mitigation method in lieu of asbestos removal; and accepts no responsibility if any loose asbestos-containing floors are affected upon removal of a Shaw Industries products.
 
Fill depressions or cracks with a cementitious patching / leveling compound that meet or exceed Shaw Industries maximum moisture level and pH requirements. Use of gypsum-based patching and/or leveling compounds which contain Portland or high alumina cement and meet or exceed the compressive strength of 3,000 psi are acceptable. You may use wax-based (green) sweeping compounds if you sweep and remove them immediately.
 
Concrete floors must be sealed with a latex primer such as 9050 if dusting or powdering exists. 

3. SELECT YOUR ADHESIVE 

When adhering the Double Glue cushion to the substrate, use a premium adhesive such as 1000 or 3800.

When adhering Broadloom carpet to Double Glue cushion, use a premium adhesive such as 1000 or 3800.

Adhesives containing solvents should not be used.

NOTE: Releasable adhesive is not recommended or warranted for the installation of Shaw’s Double Glue cushion / broadloom products.

4. LAY OUT YOUR SITE 

  • Measure, cut and place Double Glue cushion according to the cushion specifications.

  • Cushion seams should be installed at right angles to broadloom carpet seams or staggered six inches from the carpet seams.

  • Use the longest possible lengths. Small pieces may cause issues during positioning of the carpet.

  • Allow a 1/8” space at the perimeter where the cushion meets the walls or seams.

5. INSTALL DOUBLE GLUE CUSHION

  • After the cushion is in place, fold it back and apply recommended adhesive with a 3/32” x 3/32” x 3/32” “V” notch trowel. The adhesive must have adequate open time and must be tacky throughout the bed of adhesive. The amount of open time needed may vary due to temperature, ambient humidity and air movement.

  • Place the cushion into the adhesive. To ensure 100% transfer of adhesive to the cushion roll the cushion with a 75-pound roller

6. INSTALL BROADLOOM

  • Measure, cut and place the carpet on the cushion. Carpet edges should be row cut and fitted to assure a smooth, clean finished seam. Apply a latex seam sealer such as 4000 to each carpet edge at the base of the fiber along the backing edge.

  • Fold the carpet back and apply the recommended adhesive with a 1/8 x 1/8 x 1/16 “U” notch trowel.

  • Spread the adhesive up to the seaming tape edges, or you may apply the adhesive full spread. Allow the adhesive to become tacky to the touch before laying the carpet into the adhesive.

  • A premium double glue, low profile, non-silicone paper hot melt tape is required for seaming the carpet edges.

 
Acceptable seam quality cannot be obtained without the use of a proper hot melt seaming tape designed for double glue installation.

Note: With small room sizes and use of a premium non silicone paper tape, the seams may be hot melted prior to spreading adhesive. 

  • After the carpet is firmly in place trim the perimeter as necessary.

  • After installation, it is recommended to roll the installation with a 75-pound roller.

Note: Carpet with attached cushion, hot melt, or unitary backings should not be used utilizing these installation methods.

7. POST INSTALLATION CARE AND PROTECTION

  • Place plywood over the carpet when heavy objects are moved.

  • Use protective chair mats under chairs with casters. This will prevent excessive wear to the face of the carpet.

  • Place a non-staining building material paper over the carpet to protect it when additional construction activity is to take place. Do not use plastic sheeting as it will trap moisture.

Revision: 08082024
Tech Services 1-800-471-7429