95
Acclimatisation of material is important
Acclimatisation of Karndean LooseLay: 48 hours before installation remove
Karndean LooseLay from packaging and rest flat in stacks and allow to
acclimatise in the area where installation is to take place, which must be
kept to 18°C - 29°C.
Subfloor requirements
Concrete: uneven concrete floors must be screeded and made level,
dampness tests must be made and newly laid concrete floors must be allowed
to dry out, all to as 1884-2012 (or for New Zealand NZS 1884-2013). Floor
coverings -resilient sheet and tiles - installation practices.
Timber: general floorboards, T&G boards, woodblock, parquetry, particle board,
plywood, hardboard, cement sheeting are all suitable and need not be porous,
providing their surface quality for plainness, smoothness and soundness is in
accordance with as 1884-2012 (or for New Zealand NZS 1884-2013). Loose boards
must be firmly fixed making the subfloor solid with little flexibility. If in doubt consult
your timber supplier or Karndean Designflooring.
Plywood: suitable for use providing it complies with AS/NZS 2269 and be a
minimum of 6mm thickness. Test first for dampness before proceeding. Lightly sand
joints and filled areas. Vacuum to remove dust to facilitate bonding.
Existing ceramic tiling: level any grout lines with a suitable floor levelling
compound and make the floor sound ensuring there will be no "show through"
afterwards.
Avoid sub-floor solvent cleaners: solvents and other abrasive chemicals used to
clean sub-floors can damage the backing of karndean looselay and afect the
product's performance.
Adhesive for Karndean LooseLay
(When some adhesive bonding is required)
Karndean Hi-Tack PS adhesive is a pressure sensitive, water based adhesive,
formulated to provide a lateral bond and have a peelable nature and is designed for
use with Karndean LooseLay for all commercial applications and where relevant in a
domestic dwelling as outlined in the Grid Stick method on page 96. Installation guide
Karndean LooseLay
Installation guide