Easy and safe renovation of damp masonries

Uprising damp due to missing or defective waterproofing of the basement walls is the reason why damages on brickwork and renders/plasters occur. The Weber system "Easy and safe renovation of damp masonries" allows a quick, reliable and simple application for renovation.

Step by step


    1. Remove old and damp renders/plasters approx. 80 cm above the moist and salt-loaded area


    2. Chisel a recess of 4 x 4 cm in the groove area (angle wall/floor).


    3. Scrape out the salt-loaded joint mortar network in a depth of approx. 2 cm.


    4. Drill boreholes into one horizontal masonry joint row.
    iameter: 16 mm, length of each borehole: 5 cm shorter than masonry thickness; interval: 8 - 12 cm. When the maximal water level is high and an external waterproofing is not existing, drill the holes in the highest horizontal masonry joint row under the basement ceiling.


    5. Blow dust out of the holes with air.


    6. Use the manual gun no. 3 and its accessories (injection pipes, adapter etc.) for injecting the cream weber.tec 946 without pressure into the boreholes. Alternatively use a Gloria equipment for spray application out of the plastic bucket.


    7. Fill the cream weber.tec 946 in the whole length of the holes. Start the injection at the hole end and step back.


    8. Apply a bonding layer with the watertight mortar weber.tec 933 mixed in brush consistency on the groove area (angle floor/wall); afterwards apply weber.tec 933 in trowel consistency with flat trowel on the fresh bondcoat.


    9. Close the clean joint network of masonry with weber.tec 933 as patching mortar in max. 10 mm thickness, using a flat trowel.


    10. Comb the fresh mortar layer horizontally, using for ex. a tiler notched trowel 6 - 8 mm.


    11. Apply weber.tec 933 as groove mortar with the preformed rounded trowel "big size" weber.sys Hohlkehlenschlittten in a radius of approx. 5 cm along the angle wall/floor


    12. After drying of the bondcoat weber.tec 933 apply the waterproof render weber.tec 934 in approx. 20 mm thickness as thrown-on with a hawk trowel. Rule with aluminium beam or flat trowel. Depending on the type of top render/plaster comb horizontally with notched trowel or smooth with damp brush or sponge float.


    13. Apply the ready-to-use textured lime render/plaster, weber.cal 286 with a plastic trowel on top of the smoothed water-proof render. Smooth with sponge float.


    14. Alternatively apply weber.san 954 as thick-layer damp-proof render/plaster (maximum 4 cm). In this case the render weber.tec 934 must be combed horizontally with a notched trowel.