Wecryl surface protection system OS 11a
The Wecryl OS 11a surface protection system is a high-quality, flexible PMMA coating system that has been tested and certified in accordance with the Technical Rules for the Maintenance of Concrete Structures (TR Instandhaltung), DAfStb Rili SIB 2001 and DIN EN 1504-2. This makes the coating system consisting of an elastic surface protection layer (hwO) and crack-bridging top layer ideal as a surface protection layer with increased dynamic crack bridging for surfaces that can be walked and driven on.
The surface can be designed in a variety of colors and with patterns or markings. The outstanding crack-bridging properties make the system an economical and high-quality solution for the long service life of parking garages.
Application Areas:- Surface protection and sealing of concrete components with near-surface cracks and/or separating cracks and planned mechanical stresses
- Passenger and vehicle traffic
- Open and intermediate decks and floor slabs of parking structures

Attributes Description
with Wecryl 271 as hwO
- highly flexible and crack-bridging even at temperatures down to and including -20 °C (crack-bridging class B 3.2)
with Wecryl 279 as hwO
highly flexible and crack-bridging even at temperatures down to and including -30 °C (class B 4.2 - dynamic crack-bridging according to DIN EN 1062-7) (class A 5 - static crack-bridging according to DIN EN 1062-7)
with both hwO alternatives
tested according to class OS 11a in accordance with TR maintenance
No fleece or fabric inlay required in accordance with TR-Instandhaltung standard structure
- Fire behavior classification Bfl-s1
- High mechanical load-bearing capacity (vehicles, people)
- Full-surface adhesion, no trailing
- Can be used on almost all substrates
- permanently weather-resistant (resistant to temperature, UV, hydrolysis)
- Resistant to most common acids and alkalis
- Can be designed in a variety of ways (colored surfaces, road markings, ...)
- solvent-free
- quick and easy to apply













