weber.tec 915

Drying time:
approx. 2 - 3 days

Storage:
The product can be stored for at least 12 months in its original unopened packaging if kept dry, cool and frost-free. Frost destroys the bitumen component. After thawing it is not allowed to use it.

Fields of application

weber.tec 915 is used for waterproofing earth-contacting basement walls (masonry and concrete), concrete floor slabs, lean concrete (i.e. beneath floor concrete slab) and foundations in the cases of ground damp, nonpressure and pressure water.
Convenient for waterproofing earth-contacting concrete ceilings of car parking decks in case of non-pressure water.
Also for protection of socket areas of the facade against splash water.
In addition, for spot-bonding of extruded polystyrene rigid-foam boards used as protective, drainage or perimeter insulation boards (depending on the specific use) in the cases of ground damp and non-pressure water on the pre-said building parts.
For use outdoors.

Main features

• solvent-free, hence environment-friendly
• highly flexible and crack-bridging
• high dry residue approx. 90%
• quickly resistant to rain
• suitable for any mineral substrates; no cement render is necessary on masonry
• resistant to ageing, to water attacking concrete up to the level “highly corrosive” in accordance with DIN 4030 (up to 3.000 mg sulphate per liter of water) and also to seawater
• resistant to frost and thawing salts after full drying
• sprayable with peristaltic pump and screw pump technology, e.g. Wagner PC 1030 with air support

General notes

• Limits of use: do not use for bonding insulation boards in case of pressure water; for this purpose, use a 2-component bitumen waterproofing thick coating, for ex. weber.tec Superflex 10.
• All characteristics mentioned in this data sheet are given for a temperature of +20 °C, without draft and a relative rate of humidity of 70%.
• In the case of pressure water, steel-reinforced concrete must satisfy the national standards (for ex. EN 206); if not issued and if necessary, request technical advice.
• In case of sunshine, carry out waterproofing works in shadow or in the morning or evening hours.
• Do not bond protective boards or insulation boards and do not fill the excavation pit until the material has completely dried.
• Prior to backfilling the excavation pit use the drainage mat weber.sys 983 over the basement walls in order to protect the waterproofing system.
• Comply with the national standards and/or guidelines; if not issued, and if requested, refer to the norm DIN 18533 (”Waterproofing of Ground-contacting Building Structures”), the ”Guideline for Planning and Execution of Waterproofing Works with Polymer-Modified Bitumen Coatings (PMBC)” (4th edition, Dec. 2018, issued by the German Construction Chemicals Association) and the WTA leaflet ”Retrospective Waterproofing of Ground-contacting Structures” (WTA = German Scientific and Technical Working Group for Building Conservation and Monument Preservation) and/or request technical advice.

Special notes

• In case of rain threatening, high humidity rate and cool temperatures, use weber.tec 915 as 2-component.
• Do not add any foreign substances during mixing and application.
• Refer to the Weber application tip ʺGeneral Guidelines for Waterproofing Works with Bitumen Thick Coatingsʺ for full information related to important issues like assessment of water load, thickness control, and all execution details.
• The consumption figures given in this document will increase if the applicator lacks experience. In addition, the figure of 1.0 - 1.5 liter/m² for the scratch layer depending on the substrate roughness must be taken into account.