Description A polyurethane based multi-component car park decking system for heavy abrasion areas, where crack bridging properties are required.
- MASTERTOP PRIMER 2 - Is a solvent free, two component, low viscosity epoxy preconditioning coat/primer, which stabilises the prepared substrate; acts as the bonding media for the aggregate key, and isolates subsequent PU coatings from the alkalinity of concrete, which is known to assist degradation of polyurethanes. MASTERTOP PRIMER 2 exhibits a high degree of capillary-pore penetration and will prevent rising damp from reaching subsequent coatings.
- MASTERTOP MEMBRANE 23 – is a two component solvent free polyurethane coating suitable for use in trafficked systems that require crack bridging capability. When used in car park decking systems it will bridge dynamic cracks.
- MASTERTOP TOP COAT 40P - Is a one component PUR coating compound with a low solvent content suitable for, among other things, top seals in parking decks. It provides UV-resistant, hard-elastic surfaces which are resistant to chemicals and abrasion.
Primary uses
- Car park decks
- Ramps
- Heavy duty turning areas
Packaging
MASTERTOP 1332 is supplied as follows:
- MASTERTOP PRIMER 2 - 30 kg
- MASTERTOP MEMBRANE 23 - 30 kg
- MASTERTOP TOP COAT 40P - 35 kg
Coverage
| MASTERTOP PRIMER 2 |
0.2-0.3kg/m² depending on surface texture and porosity. |
| MASTERTOP MEMBRANE 23 |
1.8-2.0kg/m² |
| MASTERTOP TOP COAT 40P |
minimum application thickness 0.6kg/m² |
Typical properties*
MASTERTOP PRIMER 2 - Typical properties
| Mixing ratio A:B |
100 : 45 by weight |
| Mixed density at 20°C |
approx. 1.09 gm/cm³ |
| Application time |
approx. 30 mins. at approx. 20°C |
| Application temperature |
+8°C - +40°C substrate temp |
| Recoatable after |
approx. 3 hours at +30°C |
| |
approx. 5 hours at +20°C |
| |
approx. 10 hours at +10°C |
| Tensile strength DIN 53455 |
approx. 30 N/mm² |
| Breaking elongation DIN 53455 |
approx. 5% |
| Compressive strength |
90-100 N/mm² (depending on the aggregates) |
| Flexural strength |
65-70 N/mm² |
| E-module |
3000-3300 N/mm² |
MASTERTOP MEMBRANE 23 – Physical properties
| Mix ratio A:B |
4:1 by weight |
| Mixed density |
1.18gm/cm³ |
| Pot Life at 20°C - 30kg unit |
45 minutes |
| Tensile strength DIN 53504 |
6N/mm² |
| Elongation at break DIN 53504 |
100% |
| Shore A Hardness |
Approx. 80 |
MASTERTOP TOP COAT 40P - Typical properties
| Mixed density |
1.30-1.40gm/cm³ depending on colour |
| Curing at 20°C and 60% rel. atm. hum. |
Capable of bearing loads at 48 hours tack free approx. 30 mins.to be walked on approx. 2 hours |
| Reaction temperatures |
from +5°C to +40°C |
| Rel. atm. humidity |
40-90% |
| Tensile strength DIN 53504 |
approx. 4.5N/mm² |
| Breaking elongation DIN 53504 |
approx. 200% |
| Water vapour diffusion resistance factor DIN 52615 |
approx. 3000 |
| Fire classification |
Swiss Fire Class, Fume Class 1 Resistant to flying fire and heat radiation in accordance with DIN 4102-B2 |
Standards
Complies to ASTM C957 : 1993 when tested in accordance with:
ASTM C501 : 1990
ASTM C794 : 1993
Guide to application
Application temperature:
The quality of the final coating is dependent on the substrate and the material temperatures, we recommend a substrate temperature of min. +12°C and max. +30°C. The optimal material temperature is +20°C to +25°C.
Surface preparation
The surface to be coated must be clean, dry free of laitance, oil, grease or any substance that may impair adhesion.
The preferred method of surface preparation are; captive blasting, high pressure water jetting, surface grinding or similar.
Weak or damaged concrete must be removed, then replaced with a suitable repair compound from the Emaco or Concresive range of products.
Surface conditioning / priming
The prepared surface must be conditioned to receive the MASTERTOP MEMBRANE 23 by the application of MASTERTOP PRIMER 2 surface conditioner / sealer applied at the rate of 0.2kg/m² depending on the absorption of the concrete substrate.
Mixing:
Mix the A and B components of MASTERTOP PRIMER 2 together until streak free.
Do not mix more primer than can be used within 15 minutes at 25°C. See datasheet MASTERTOP PRIMER 2.
Apply the mixed material by paint roller, brush or airless spray.
Into the wet coating, broadcast SRA No. 3 at a minimum rate of 0.5kg/m² do not apply to excess, but do not leave bald areas.
Allow to cure for minimum 5 hours with a substrate temperature of 20°C or 3 hours at 30°C.
Remove loose aggregate by vacuuming cleaning or sweeping. Scrape the edge of a trowel over the surface to remove aggregate that may be standing too proud of the surface.
Mixing for MASTERTOP MEMBRANE 23:
Mix the A and B components of the MASTERTOP MEMBRANE 23 together using a slow speed (400 rpm) drill with a spiral mixing head. Work the mixer round the mixing pail to ensure it scrapes the side and bottom of the pail.
Application
Pour the mixed material onto the floor and spread at the required coverage using pin screed or trowel.
Into the wet MASTERTOP MEMBRANE 23, broadcast aggregate SRA No. 3 to excess (4-5kg/m²).
Allow to cure for 48 hours at 20°C.
Remove excess aggregate by sweeping or vacuuming.
Topcoat:
Apply MASTERTOP TOP COAT 40P at a minimum of 0.6kg/m²
Chemical resistance
Contact your BASF Regional office.
Storage
Store under cover out of direct sunlight and protect from extremes of temperature. In tropical climates the product must be stored in an air conditioned environment.
Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult BASF's Technical Services Department.
Safety precautions
For further information, a material safety data sheet is available to the specialist applicator.
Note
Field service, where provided, does not constitute supervisory responsibility. For additional information contact your local BASF representative.
BASF reserves the right to have the true cause of any difficulty determined by accepted test methods.