weber.tec 940 E

Colours:
yellowish to red-brown

Storage:
The product can be stored for at least 18 months in its original unopened packaging if kept dry and frost-free.

Fields of application

weber.tec 940 E is used as horizontal barrier for the subsequent cross-sectional waterproofing of masonry against rising damp.
Suited for masonries with a moisture content up to 95%.
Can be injected in 3 different methods: by injection at low-pressure through boreholes / by pouring into the boreholes / by injection through pre-injected boreholes with stabilizing mortar in case of masonries with several cavities (“wet-in-wet” injection method).
weber.tec 940 E largely prevents salt migration into the subsequent damp-proof render after the renovation works.
For use indoors and outdoors, depending on the specific application.

Main features

• efficient without activator, even in case of high moisture contents
• micro-emulsion penetrates into the finest capillary pores
• no formation of salts that are harmful to the masonry
• highly reactive concentrate
• particularly suited for the pressure injection methods
• also convenient for the ”wet-in-wet” injection method
• rapid hardening
• shelf life of min. 16 months after dilution with water

General notes

• Drying of the walls above the injection zone up to their balance moisture can only be obtained, if there are no dense wall coverings (remove renders and paints) and if there are sufficient drying conditions in the treated rooms.
• Additional measures may have to be taken; either a functional vertical waterproofing on the exterior side of basement walls (for ex. the 2- comp. lightweight bitumen waterproofing thick coating weber.tec Superflex 10) or on the interior side of the walls (for ex. the 2-comp. reactive waterproofing slurry weber.tec Superflex D 2) and/or a damp-proof render (for ex. weber.san 953, san 954 or san 958).
• When drilling holes, take care that at least one horizontal joint is injected via a butt (vertical) joint.
• For masonry thicknesses over 60 cm and wall corners, drill holes from both sides.
• In the case of masonries with a large number of cavities, the resin should be processed using the patented “wet-in-wet” injection method. For such masonries, the first operation is to inject the borehole suspension weber.tec 942 (highly sulphate-resistant and low shrinkage cementbased mortar) through suitable packers prior to subsequent injection of weber.tec 940 E.
  This method creates a stabilized and solid injection area for the injection works and increases the alcalinity of this area which allows the resin to react.
• For application comply with national standards and/or guidelines; if not issued and if necessary, refer to the above-mentioned WTA leaflet 4-10.

Special instructions

• Do not add foreign substances during mixing and application.
• Observe the Weber application tip ʺBasement waterproofing - Old buildings - Internal renovation of basements with flexible waterproofing mortars”.