Doublebond Adhesives

ADHESIVES, AND EQUIPMENT
For installing Jute backed, Polypropylene "Action Bac" type and Latex backed, woven
and tufted carpets.

WARRANTY
Provide normal manufactures warranty, extendable for a period of 5 years, covering replacement of adhesive materials together with reimbursement of reasonable reinstallation charges to the installing contractor, if adhesive bond failure is determined within the warranted period, providing Roberts conditions are met regarding recommended equipment, materials and techniques.

SURFACE PREPARATION
All subfloor surfaces shall be prepared in accordance with Australian Standard AS/NZS 2455.1.1995 -"Textile Floor Coverings Laying Practice".

Adhesive shall be Roberts 656 Pressure Sensitive Adhesive for bonding the doublebond underlay
to the subfloor.

Adhesive shall be Roberts 80 Solvent Free/Low Odour Formula or Roberts 90 Double Bond Carpet Adhesive or Roberts 95 Extra Tack Carpet Adhesive for bonding the carpet to the doublebond underlay.

Carpet seam adhesive shall be Roberts 52 Water Based Carpet Seam Adhesive or Roberts 5216 Solvent Based Carpet Seam Adhesive,

Trowel: shall be 2.4 mm x 2.4mm x 2.4mm "V" notched for Roberts 80, Roberts 90, or Roberts 95, coverage up to 3 sq metre per litre, for smooth backed carpets and 3.2mm x 1.6mm x 3.2mm "V" notches for woven and "Action Bac" type carpets coverage up to 2 sq metres per litre. Trowel shall be a 1.6mm x 1.6mm x 1.6mm "V" notched for Roberts 656. coverage up to 5 sq metres per litre.

APPLICATION OF PRIMERS & ADHESIVES FOR DOUBLEBOND CARPET TILE INSTALLATION
For high porous subfloors, or floors where a floor levelling compound has been used, the use of Roberts 370 Floor & Wall Primer is recommended. Roberts 370 Floor & Wall Primer shall be applied evenly over the entire subfloor surface by either spray gun or roller in accordance with the appropriate Roberts Technical Data Sheet. In some circumstances, depending on the rate of absorbency of the subfloor, a second application of primer may be necessary. Drying time shall be approx. 10 to 20 minutes depending on substrate and climate conditions.

Spread Roberts 656 Pressure Sensitive Adhesive using specified "V" notched trowel to 100% of subfloor. Adhesive and sub floor temperatures must be greater than 10° Celsius. It is essential that the underlay (Bridgestone or equivalent) is lowered into the adhesive before it has completely dried or become clear. This will ensure adhesive transfer to the back of the underlay. Tack up time will vary according to climatic conditions -20 minutes at 20° Celsius.

Apply Roberts 80 or Roberts 90 or Roberts 95 Adhesive using the specified "V" notched trowel to 100% of the surface of the slab underlay. For hard to hold carpet, it may be necessary to allow a short tack up time. Seams should be sealed with Roberts 52 Water Based Carpet Seam Adhesive or Roberts 5216 Solvent Based Carpet Seam Adhesive. Starting at one end of the seam, insert the applicator tip into the seam and apply a continuous bead of adhesive along the entire length as per Roberts published instructions.

OR
After bonding the carpet to the floor, open the seams and insert the Roberts R50-350 Dual Bond/Direct Stick Carpet Tape the full length of each seam and join the carpet using a Roberts Carpet seaming iron as per Roberts published instructions.

SAFETY & HANDLING
Product Data Sheet and a Material Safety Data Sheet are available on request.