CONCRETE UNDERLAYMENT MORTAR APPLICATION & FEATURES High performance floor underlay, self smoothing, leveling mortar for carpet / tiles (2-50 mm thickness) with enhanced flow properties for fast and easy application GEEKAY TOP GP Advanced is designed as a heavy duty underlay which forms a smooth, hard surface for a variety of floor finishes including carpet and ceramic tiles. GEEKAY TOP GP Advanced may, depending on the end use of the floor, be used in conjunction with high build epoxy resin based systems such as Geeky floor SL (refer separate Technical Data Sheet). GEEKAY TOP GP Advanced can be used in residential, commercial and light industrial applications and is suitable for both new construction and refurbishment projects COMPOSITION &CONDITIONS Application Instructions Although GEEKAY TOP GP Advanced has been designed for application by pump, the product can also be mixed and applied by hand. Preparation The substrate should be clean, sound and free from loose material and contamination such as plaster, oil, paint and grease. New concrete should be at least 14 days old. Excess laitance should be removed by light scrabbling or captive shot blasting followed by vacuuming to remove dust debris. Oil and grease must be removed. Large cracks and holes may be filled using a mix consisting of equal volumes of GEEKAY TOP GP Advanced and clean sharp sand made up to a trowel able mortar by the addition of a small amount of water. Prime the substrate with Geekay floor Level Prime prior to repair. Priming The object of priming is to seal the substrate to prevent air release from the subfloor rising and forming bubbles and pinholes on the surface of the GEEKAY TOP GP Advanced. Extremely porous substrates may require two priming/sealing coats. Primer coats must be allowed to dry before applying the GEEKAY TOP GP Advanced. Installation by pump This is a specialised activity and the product must be applied by an experienced contractor who has been fully trained in the use of the product and equipment. Application procedure is as follows: • Thoroughly prepare the floor surface. • Prime the surface with Geekay floor Level Prime, diluted 4:1 with water, (4 parts water to 1 part Geekay floor Level Prime) Do not mix more GEEKAY TOP GP Advanced than can be reasonably laid within the flow time of the material. However, ensure that subsequent mixes are ready to enable continuous pouring until the area to be surfaced is complete. • When substrate temperatures will be below 15oC prior to the product’s initial set, GEEKAY TOP GP Advanced must be mixed at the low-end of the recommended water addition rate, i.e. 3.6 litres of water per 18kg bag. and allow to dry. • Reprime the surface with Geekay floor Level Prime, diluted 4:1 with water, if necessary, and allow to dry. • Apply GEEKAY TOP GP Advanced to the required thickness onto the dry, primed surface. Installation by hand Mixing • Each 18 kg bag of GEEKAY TOP GP Advanced requires the addition of 3.6 - 3.85 litres of clean, cool water to produce a free flowing self smoothing consistency. • Pour the mixing water into the clean mixing vessel. Add the powder slowly to the water, mixing continuously with a heavy duty drill fitted with a suitable paddle. Mixing should continue for at least 3 - 4 minutes until a smooth creamy consistency is obtained. Do not mix more GEEKAY TOP GP Advanced than can be reasonably laid within the flow time of the material. However, ensure that subsequent mixes are ready to enable continuous pouring until the area to be surfaced is complete. • When substrate temperatures will be below 15oC prior to the product’s initial set, GEEKAY TOP GP Advanced must be mixed at the low-end of the recommended water addition rate, i.e. 3.6 litres of water per 18kg bag.