weber.therm 509

Layer thickness: 10 - 100 mm

Water requirement: approx. 13,5 l / 15 kg

Storage:
The product can be stored up to 12 months in its original unopened packaging, if kept dry and protected from moisture.

Fields of application

weber.therm 509 is a lightweight, extremely low-stress, thermally insulating render for all solid, load-bearing walls in interior and exterior areas. It is particularly suitable as additional insulation for thermally insulating surfaces with low strength and for the energy-efficient renovation of historical buildings and monuments.

Product features

• low thermal conductivity
• pure mineral lightweight aggregates
• high-yield lightweight plaster
• mould-inhibiting
• very low-voltage
• extremely open to diffusion
• enables large layer thicknesses of 10 - 100 mm
• high capillary conductivity
• high water storage capacity
   

General notes

• Do not mix with other substances during mixing and application.
• The air temperature, the used materials and the surface must not fall below +5 °C during application and drying.
• The freshly applied render must be protected from rain to prevent efflorescence, among other things, and from rapid moisture extraction to ensure optimum hardening.
• Apply to application and execution DIN 18350 VOB, Part C, DIN 18850 and DIN 18550 as well as DIN EN 13914.
• Consumption may vary depending on the surface type and application method. Exact consumption values must be determined by testing different areas of the object.
• Adjacent components must be separated from the plaster system.
• Remove the sintered layer before applying further layers.
   

Special notes

• The plaster base must be sufficiently dry and must not have any pressing or rising moisture.
• weber.therm 509 can be coated with a reinforcing plaster after a standing time of 10 days.
• A full-surface reinforcement layer must always be applied. For very dark colours <HBZ 20 or very fine structures under 2 mm, a double layer of reinforcing filler should be applied and the use of TSR technology should be checked.
• The reinforcement layer consists of the adhesives and reinforcement mortars weber.therm 300, weber.therm 302 or weber.therm 304 and the reinforcement fabric coarse weber.therm 310. Alternatively, the fine reinforcement fabric weber.therm 311 can be used with the reinforcement mortars weber.therm 302 and weber.therm 304.
• In interior areas, weber.cal Kalk-Haftputz with coarse reinforcement fabric weber.therm 311 may be used as a reinforcing filler layer.
• Use perimeter insulation boards or render in the socket area.
• A filling machine with insulating render mixing spiral and D8 1.5 worm pump with clamp is required for application. Use a hose thickness of 35 mm. The hose length should be limited to 20 m.
  Further information: See equipment planner.