weber.plan 815

Colours:
grey

Storage:
The product can be stored at least 6 months year in its original unopened packaging, if kept dry and protected from moisture.

Fields of application

weber.plan 815 is a special cement for the production of quick-setting screed and repair mortars. For use as bonded screed, screed on separating membranes or insulation boards. For the renovation and refurbishment sectors. For use as heated screed. Also for use in wet-duty rooms under bonded waterproofing systems. For indoors and outdoors.

Main features

• multi-use
• fast hardening
• quickly ready for overlay with flooring materials
• particularly dimensionally stable
• quickly ready for heating
• suited for pre-heating temperatures up to +50 °C
• easy application

General notes

• Comply with the national rules/standards; if not issued or if necessary, refer to the norms DIN 18 560 and DIN 18 353.
• All characteristics mentioned in this data sheet are based on a temperature of +23 °C without draught and a relative humidity rate of 50%.
• Higher temperatures and lower humidity accelerate, whilst lower temperatures and higher humidity delay the setting process.
• Protect mixed material from rapid water evaporation and draughts or similar during the hardening phase.
• Mix weber.plan 815 with gravel sand 0 - 8 mm (according to EN 13139), with a grading curve A/B8 (according to DIN 1045-2 and EN 206) and a content of the finest particles (< 0.063 mm) of max. 3 %. Comply with the national norms/guidelines relating to appropriate grading curve of aggregates; if not issued, refer to the pre-said norms.
• The water/cement ratio should not exceed 0.45, taking into account the moisture content of the aggregates.

Special notes

• Do not mix the special cement with other cements or binders.
• Screeds with weber.plan 815 must not be exposed to direct weathering outdoors and must always be covered.
• In case of application outdoors (for ex. on balconies) or in wet-duty rooms special measures for waterproofing should be taken, for ex. with weber.tec 824, weber.tec 827/827 S, Superflex D 2 or weber.xerm 844 (bonded layers).
• In the case of bonded screeds, the drying of the overall construction must be taken into account before ceramic coverings are applied.
• The values for compressive and flexural strengths after 28 days mentioned in this data sheet refer to EN 13892-2 for a mixing ratio of 1 : 4 parts by weight.
• Minimum screed thickness: 30 mm when used as bonded screed / 40 mm when used on separating membrane / 45 mm when used on insulation boards.
• Maximum screed thickness: in all cases 60 mm, except 80 mm on underfloor heating.