All carpets should be laid in accordance with AS 2455.1:"Textile floor coverings - Installation practice - General" and the Feltex/Redbook Installation Recommendations (available below).
Carpet should always be installed with new, quality underlay. Underlay and carpet are designed to work together as a complete flooring system and underlay should always be used. Quality underlay will provide better comfort and resilience while extending the life of your carpet. Ask your retailer to match a quality underlay (compliant with the appropriate classification for the intended use/application as per AS 4288-2003 i.e. light residential, general, luxury, commercial or heavy commercial) with the quality and proposed use of your carpet.
Insist on trained professional tradesmen to install your carpet. Before making any cut from a roll, ensure your installer examines the carpet and checks for length, quality, pattern, colour and dyelot.
To avoid bubbling and wrinkling, all carpets should be power stretched in both length and width during installation using a power stretcher with extendable poles (not knee kickers) where possible. The quality of an installation depends on the quality of the seams. If the seams are not permanently bonded together, the carpet may unravel and begin to break down at the edges, making it appear badly fitted and causing premature wear. Seam adhesive (sealer) must be used for all seams (widthwise and lengthwise). Use a solvent base seam seal adhesive on direct glue down applications or a latex base seam seal adhesive for conventional installations. Seams are not covered by the Feltex warranties.
Carpet pile should run in the same direction throughout the house, sweeping towards the main entrance where possible. Seams and cross joins in the wrong place can spoil the appearance of your carpet and lead to premature wear. Generally seams should run in the same direction as most foot traffic. Seams should also be avoided in high traffic areas and be kept as far away from windows as possible so light does not fall across the seam making it more obvious. Ask the installer where they will place seams and cross joins.
Carpet pile should sweep down on stairways. A little hidden extra carpet should be folded back at the top and bottom of stairs so that as the edges of the tread are worn down, the carpet can be moved to hide the wear point. Purchasing extra carpet to update stairs is recommended. Failure to have your carpet installed using the above guidelines may adversely affect the performance of your carpet.