Sikafloor® Pronto RB-28
Acrylic crack-bridging fast curing car park decking membrane system
Sikafloor® Pronto RB-28 is an acrylic resin based, crack-bridging, fast curing car park decking membrane system
- Very fast curing even at low temperatures
- Waterproof
- Good abrasion resistance
- Good mechanical and chemical resistance
- Crack-bridging properties
- Slip and skid resistant surface
- Suitable for concrete and asphalt surfaces
System Structure
Usage
Slip resistant resin flooring on cementitious and asphalt substrates for:- Multi-storey and underground car park decks, turning areas and ramps
- Interior and exterior use
Advantages
- Very fast curing even at low temperatures
- Waterproof
- Good abrasion resistance
- Good mechanical and chemical resistance
- Crack-bridging properties
- Slip and skid resistant surface
- Suitable for concrete and asphalt surfaces
Packaging
Refer to the individual product data sheets
Colour
Seal / Top coat colours: ~RAL 7030, RAL 5010, RAL 5015
Appearance
Slip-resistant semi-gloss finish
System Details
APPROVALS / STANDARDS
- Crack-bridging test EN 1062-7, Sikafloor® Pronto RB-28, kiwa, Report No. P 10729-2-E
- Fire Behaviour EN ISO 9239-1, Sikafloor® Pronto RB-28, University of Ghent, Test report No. 19-0151-02
- Crack Bridging Ability ASTM C1305, Sikafloor® Pronto RB-28, NELSON, Test report 19-1060(A)
System Structure
Sikafloor® Pronto RB-28 system (~3–5 mm) / Application on horizontal surfaces
| Layer | Product |
| 1. Primer | Sikafloor®-10/-11/-13 Pronto |
| 2. Wearing layer + broadcast | Sikafloor®-32 Pronto (filled 1:2 with Sikafloor® Pronto Filler) + standard or coloured quartz sand (0,7–1,2 mm) |
| 3. Seal / Top coat | Sikafloor®-18 Pronto |
Sikafloor® Pronto RB-28 system (~3–5 mm) / Application on inclined surfaces (10–20 %)
| Layer | Product |
| 1. Primer | Sikafloor®-10/-11/-13 Pronto |
| 2. Base layer + light broadcast | Sikafloor®-32 Pronto (unfilled) + standard or coloured quartz sand (0,7–1,2 mm) |
| 3. Wearing layer + excess broadcast | Sikafloor®-32 Pronto (unfilled) + standard or coloured quartz sand (0,7–1,2 mm) |
| 4. Seal / Top coat | Sikafloor®-18 Pronto |
Composition
Reactive acrylic resins
Nominal Thickness
~3–5 mm
Shelf Life
Refer to the individual product data sheets
Storage Conditions
Refer to the individual product data sheets
Crack Bridging Ability
| Static crack bridging > 250 μm | Class A2 |
Reaction to Fire
| Cfl-S1 | (DIN EN 13501-1) |
Chemical Resistance
Sikafloor®-18 Pronto provides the chemical resistance. Refer to Product Data Sheet
Permeability to Water Vapour
| Sd = 148 m, Class III | (EN 1062-1) |
Skid / Slip Resistance
R11 V4 | (DIN 51130) |
Application
Ambient Air Temperature
0 °C min. / +30 °C max.
Relative Air Humidity
~80 % max.
Dew Point
Beware of condensation.
The substrate and uncured applied floor material must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product.
Substrate Temperature
0 °C min. / +30 °C max.
Substrate Moisture Content
<4 % parts by weight
The following test methods can be used: Sika®-Tramex meter, CM - measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).
Waiting Time / Overcoating
Before applying Sikafloor®-32 Pronto on Sikafloor®-11/-13 Pronto allow:
| Substrate temperature | Minimum (minutes) |
| +5 °C | 50 |
| +10 °C | 45 |
| +20 °C | 40 |
| +30 °C | 35 |
Before applying Sikafloor®-32 Pronto on Sikafloor®-10 Pronto allow:
| Substrate temperature | Minimum (minutes) |
| +5 °C | 70 |
| +10 °C | 55 |
| +20 °C | 50 |
| +30 °C | 35 |
Before applying Sikafloor®-18 Pronto on Sikafloor®-32 Pronto allow:
| Substrate temperature | Minimum (minutes) |
| +5 °C | 80 |
| +10 °C | 60 |
| +15 °C | 50 |
| +20 °C | 45 |
| +25 °C | 35 |
| +30 °C | 30 |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Applied Product Ready for Use
| Temperature | Foot traffic | Full traffic |
| 0 °C | ~50 minutes | ~2 hours |
| +10 °C | ~50 minutes | ~2 hours |
| +20 °C | ~40 minutes | ~1 hour |
| +30 °C | ~30 minutes | ~1 hour |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Consumption
Sikafloor® Pronto RB-28 system (~ 3–5 mm) / Application on horizontal surfaces
| Layer | Product | Consumption |
| 1. Primer | Sikafloor®-10/-11/-13 Pronto | 1–2 × ~0,4–0,5 kg/m² / coat |
| Optional* –Levelling Mortar (surface roughness up to 3 mm) | Sikafloor®-11 Pronto filled 1:1,5–2,0 with Sikafloor® Pronto Filler by weight | ~1,6 kg/m²/mm |
| 2. Wearing layer | Sikafloor®-32 Pronto filled 1:2 with Sikafloor® Pronto Filler by weight | ~3,6 kg/m² |
| Broadcast | Standard or coloured quartz sand (0,7–1,2 mm) to excess | ~4–6 kg/m² |
| 3. Top Coat | Sikafloor®-18 Pronto | 1–2 × ~0,6–0,8 kg/m² |
Sikafloor® Pronto RB-28 system (~3–5 mm) / Application on inclined surfaces (10 - 20%)
| Layer | Product | Consumption |
| 1. Primer | Sikafloor®-10/-11/-13 Pronto | 1–2 × ~0,4–0,5 kg/m² / coat |
| Optional* -Levelling Mortar (surface roughness up to 3 mm) | Sikafloor®-11 Pronto filled 1:1,5–2,0 with Sikafloor® Pronto Filler by weight + 0,5–1,0 % Extender T** | 1,6 kg/ m² /mm |
| 2.Base layer | Sikafloor®-32 Pronto (unfilled) + 0,5–1 % Extender T | ~0,8 kg/m² |
| Light broadcast | Standard quartz sand (0,7–1,2 mm) | ~1 kg/m2 |
| 3. Wearing layer | Sikafloor®-32 Pronto (unfilled) + 0,5–1 % Extender T | ~0,8 kg/m² |
| Excess broadcast | Standard or coloured quartz sand (0,7–1,2 mm) | ~3–4 kg/m² |
| 4. First seal / Top coat | Sikafloor®-18 Pronto | ~1 × 0,5 kg/m² |
| Second seal / Top coat | Sikafloor®-18 Pronto | ~1 × 0,3 kg/m² |
*Not included in the system structure diagram. **Depends on temperature and inclination.
For high inclinations of 15–20 %, the use of Sika® Extender T in the wearing layer may be used.
These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
CLEANING
Refer to Sika Method Statement: Sikafloor®-Cleaning Regime