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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL INDEX 578 Technical Data Sheet V 1.0 02-06-13 Liquid Nails Direct Stick Foaming Polyurethane Flooring Adhesive Description Selleys Liquid Nails Direct Stick (LNDS) is a high strength, easy to trowel polyurethane flooring adhesive. LNDS has a controlled foaming formulation that increases bond area and reduces the incidence of hollow spots. It is designed to expand to maximise the bond footprint. The very high modulus bond of LNDS offers significant advantages over more conventional highly flexible type flooring adhesives because it holds the overlay firmly to the substrate and minimises movement. The formulation wets onto surfaces (especially concrete) immediately. It is brown in colour and available in a 10L pail and 700g sausage. Uses x Direct stick bonding of solid strip timber overlay x Bonding most types of wood flooring, parquet, strip (solid, engineered and prefinished) & sheet timber to common flooring substrates such as concrete, pre-existing strip flooring, particle board, plywood, and MDF, HMR (HDF), FC (Fibre Cement) sheets. Features/Advantages x High strength and modulus for strong bonding x Minimises hollow spots x Rapid cure ± Good strength is achieved in 2-3 hours x Good wet grab and initial hold x Designed to expand (high density foam) to maximise bond footprint x Suitable for use with High Performance Polyurethane Protective Coatings x No rejection of finishes where spills on the timber have been sanded off. x Resists cupping and rafting in timber overlay flooring x Low odour and low VOC formula. Instructions for use/Application Instructions The following should only be used as a guide and the installer should apply all Australian Standards, BCA/NZBC requirements, and best practices when installing a timber floor with Liquid Nails Direct Stick. x All surfaces should be clean, structurally sound and level to 3mm in 3m. Out of level floors will increase the risk of hollow spots under strip timber overlay x Liquid Nails VBS Vapour Barrier is recommended over concrete before applying LNDS to prevent moisture migration and subsequent swelling of the timber overlay. Moisture content of the slab should be <5.5%, and moisture vapour transmission <15g/m2 per 24hr. x Concrete slabs must be built in accordance with AS2870-1996 and have a finish equivalent to that obtained when using a steel trowel. x Grind concrete to remove high spots, surface contaminants and weak surface layers x Sand timber substrates to remove contaminants such as old glue or surface finishes and flatten any raised joints. x Scoop or pour adhesive from the pail (or squeeze from sausage) to the application surface. Only spread as much adhesive as you can cover in 20 minutes x Only use the trowel recommended for strip flooring. This provides the optimal spacing and height for adhesive ridges for bridging any gaps between overlay and sub-floor and wetting onto the underside of the boards, and helps the foaming compensate for slightly uneven surfaces. x Lay the timber overlay onto prepared adhesive with a minimum of sideways movement using adequate pressure to ensure adhesive contact on each individual board. x Fastening (or weighting) is recommended to secure timber during curing. Refer to the Installation Guide for more detailed information.


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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