Polyurethane parking system

WHY POLYURETHANE?

Parking lot systems based on polyurethane resins have several advantages over epoxy-based resin systems. The first is the flexibility of the system, which allows it to bridge cracks created in the concrete after the system is already in place. This is quite important especially for floors made on ceilings. In addition to the advantages associated with the resin coating itself (ease of maintenance, lack of absorption, protection of concrete from chemical corrosion), we also have the tightness of the entire system, so water (often with salt) does not seep into the lower floor. Another advantage is the ability to make a UV-resistant layer on exposed floors. Combined with the ability to bridge cracks, this gives us the highest possible protection of the building from external factors that negatively affect the durability of the structure of the building.

COMPONENTS OF THE SYSTEM

Polyurethane resins:

• • Purion Primer W – a two-component solvent-free polyurethane resin
    for priming mineral substrates and for making base layers for backfilling with quartz
    aggregate,

• • Purion Color Parking – two-component solvent-free polyurethane
    resin for final layers in parking lot systems,

• • Purion Color UV – a two-component solvent-free polyurethane resin
    for the performance of a UV-resistant coating on exposed parking floors,

• • Purion Membrane – a two-component solvent-free polyurethane resin
    for the performance of a sealing and crack-bridging layer in class A3.

Recommended aggregate fractions:

• 0.2 – 0.8 mm or 0.4 – 0.8 mm – traffic routes and parking areas
• 1.0  – 1.6 mm – exit ramps

PURION PARKING SYSTEMS.
LAYOUT OF LAYERS AND CONSUMPTION OF MATERIALS

For a specific class of crack bridging, the above-mentioned material consumption must be strictly observed!

 

 

 

SUBSTRATE

The concrete substrate should be class min. C20/25 with a stripping strength of min. 1.5 MPa. The relative moisture content of the substrate should not be higher than 4% (by weight). The top layer must be free of cement polish, dirt, old coatings. The best way to prepare the substrate is blasting.
Alternatively, the substrate can be milled or sanded to reveal aggregates.

CARRYING OUT WORK

Before use, mix Component A, add the weighed amount of Component B, mix thoroughly for about 3-4 minutes using a slow speed mixer. Once mixed, the curing process begins irreversibly – always prepare a portion that can be evenly applied in about 15-20 minutes. Polyurethane resins are very sensitive to moisture, both from the substrate and from the air. The relative humidity of the air should not exceed 75%. During the work, it is necessary to control the humidity of the air and the temperature of the floor so that there are no conditions for the formation of a dew point and condensation of moisture on the performed surface.

PRIMING

For a standard dry substrate, use Purion Primer W. Apply with a roller or rubber squeegee. Priming should be carried out at temperatures between 15 and 25°C.

PURION MEMBRANE COATING (ONLY IN CLASS A3 SCRATCH BRIDGING SYSTEM)

Spread the Purion Membrane coating evenly over the primed substrate using a squeegee toothed squeegee (to achieve proper wear).

BASE LAYER

For the base layer of the system, use Purion Primer W. Spread the screed using a squeegee with a specific tooth size to achieve the desired thickness of the screed. After spreading, the screed should be backfilled with quartz sand of the appropriate fraction. The so-called full backfill should be made, i.e. about 3 – 3.5 kg of sand per m2. After curing, excess sand should be swept away (sand can be reused), the surface should be gently sanded with sandpaper and thoroughly vacuumed.

CLOSING LAYER

Purion Color screed should be spread evenly over the quartz sand base with a rubber squeegee or steel trowel. The method of application depends on the degree of anti-slip and the appearance of the coating you want. The resin should then be rolled out with a velour roller in two directions.

SYSTEM CARE

Keep the surface of the parking lot clean, sweeping frequently by hand or mechanically. For cleaning, use detergents with a pH of 7 to 9. Do not use acid-based and chlorine-based cleaning agents. It is unacceptable to use organic solvents (acetone, xylene, nitro, gasoline) – they destroy resin layers at a very fast rate. Washing temperature must not exceed 60°C.

RECOMMENDED PREPARATIONS:

• Si-Clean – preparation for daily cleaning and care
• Si-Wax – self-gloss polymer paste
• Si-Active Resin Clean – alkaline remover for thorough cleaning and removal of tough dirt

TOOL CLEANING

Clean tools and any contaminants freshly with acetone or other epoxy solvent. If cured, the resin can only be removed mechanically.

HEALTH AND SAFETY REQUIREMENTS

Some components of flooring compounds in the uncured state are harmful to health. In particularly sensitive people, they can cause allergies. Special precautions must be taken when performing the work. The rooms where floors are prepared and made must be well ventilated. Workers should use: clothes, shoes, goggles and protective gloves. Detailed safety rules are given in the Safety Data Sheets of the ingredients. PURION polyurethane flooring compounds are physiologically inert to the human body after curing.