Sika Sikafloor 32 Pronto

Sika Sikafloor®-32 Pronto is a 4-part, PU modified PMMA, fast curing flooring resin. It is self-smoothing, crackbridging and part of the Sikafloor® Pronto RB-58 and Sikafloor® Pronto RB-28 systems. 

Best Uses

Sika Sikafloor 32 Pronto is a fast curing resin flooring wearing layer on cementitious substrates for multi-storey and underground car park top and intermediate decks, turning areas and ramps. Suitable for interior and exterior use.

• Static crack-bridging capacity, class A4 (-20 °C)
• Dynamic crack-bridging capacity class B3.2 (-10 °C)
• Very fast curing at low temperatures
• High elongation at break at -20 °C
• Good mechanical and chemical resistance
• Slip-resistant broadcast surface to suit clients requirements
• Waterproof
• Thickness: ~2.0–4.0 mm

Sikafloor®-32 Pronto may only be used by experienced professionals.

Application

SUBSTRATE QUALITY / PRE-TREATMENT 
Cementitious substrates (concrete / screed) must be structurally sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum tensile strength of 1.5 N/mm2. Substrates must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material. Cementitious substrates must be prepared mechanically using suitable abrasive blast cleaning or planing / scarifying equipment to remove cement laitance andachieve an open textured gripping surface profile suitable for the product thickness.
High spots can be removed by grinding.

Weak cementitious substrates must be removed and surface defects such as blow holes and voids must be fully exposed. Repairs to the substrate, filling of cracks, blowholes/voids and surface levelling must be carried out using products from the Sikafloor®, Sikadur® and Sikagard® range of materials. Products must be cured before applying Sikafloor®-32 Pronto. All dust, loose and friable material must be completely removed from all surfaces before application of the product and associated system products, preferably by vacuum extraction equipment.

MIXING

Prior to mixing all parts, mix separately Part A (resin) thoroughly using an electric single paddle mixer or other similar equipment. Add Sikafloor® Pronto Filler and if required, Sika®-Pronto Pigment to Part A and mix these parts for at least 1 minute until a uniform mix has been achieved. If the coloured pigment has been added, mixing must ensure a consistent colour has been achieved. When Parts A, filler and pigment have been mixed, add Part B (hardener) and mix for at least another 1 minute, until a uniform mix has been achieved. To ensure thorough mixing, pour materials
into another container and mix again to achieve a smooth consistent mix. Excessive mixing must be avoided to minimise air entrainment. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing. Mix full units only. Mixing time for Part A + Filler + Pigment + Part B = ~3 minutes.

For ease of handling and mixing, 25 kg units may be divided (2 × 12.5 kg) (refer to Mixing table). Always weigh each product part.

APPLICATION
Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions. Prior to application, confirm substrate moisture content, relative air humidity, dew point, substrate, air and product temperatures. If moisture content > 4% parts by weight, Sikafloor® EpoCem® may be applied as a Temporary Moisture Barrier (T.M.B.) system. For external applications, apply on a falling temperature. If applied during rising temperatures pin holing may occur from rising air.

Levelling
Rough surfaces must be levelled first using Sikafloor®-32 Pronto (with or without Sika® Pronto Pigment) or using Sikadur®-12 Pronto levelling mortar. Apply by squeegee / trowel to the required thickness. Confirm waiting /overcoating time has been achieved before applying subsequent products. Refer to individual Product Data Sheet.

Reinforced layer
Pour mixed Part A: Sikafloor® Pronto Resin and Part B: Sikafloor® Pronto Hardener onto prepared levelled substrate and spread evenly using a serrated trowel. Spike roller immediately in one direction to ensure an even thickness and to remove any entrapped air. Roll out the Sika® Reemat Premium (weight ~225g/m2) reinforcement fleece into the wet resin. Overlap all the reinforcement fleece joints by a minimum 50 mm. Remove any entrapped air bubbles using a lamb's wool fleece roller. Apply wet on wet, an encapsulation layer of Part A: Sikafloor® Pronto Resin and Part B: Sikafloor ® Pronto Hardener, filled with Sikafloor®-Pronto Filler. Use a lamb's wool fleece roller or flat spatula to ensure full saturation of the reinforcement fleece with the mixed resin.

Slip-resistant broadcast layer
Pour mixed Sikafloor®-32 Pronto onto prepared substrate and spread evenly using a serrated trowel to the required thickness. Spike roller immediately in two directions at right angles to each other to aid air release and ensure an even thickness. Immediately broadcast with quartz sand or silicon carbide, at first lightly and then to excess to produce an even distribution surface profile. Allow Sikafloor®-32 Pronto to initially cure and remove all loose sand by vacuum extraction equipment. A multi coloured surface can be obtained by broadcasting with coloured-quartz.

Seal / Top coat
After waiting the required overcoating time / curing, pour the mixed Sikafloor®-18 Pronto onto the slip resistant broadcast layer and spread evenly using a squeegee or short-pile nylon roller at the required consumption rate to completely encapsulate the sand. Then using a short-piled roller, back roller in two directions at right angles to each other. A seamless finish can be achieved if a wet edge is maintained during application.

Self - smoothing wearing layer
Pour mixed Sikafloor®-32 Pronto onto prepared substrate and spread evenly using a suitable serrated trowel to the required thickness. Spike roller immediately in two directions at right angles to each other to remove trowel marks, aid air release, ensure an even thickness and obtain the required surface finish. A seamless finish can be achieved if a wet edge is maintained during application.