Renovate damp basement walls with the Weber interior basement renovation system

Step-by-step guide: renovating damp basement walls. Weber interior basement renovation system allows quick, reliable and simple application for renovation.

Simple & safe to the goal

  1. Surface preparation

    1. Remove old renders/plasters to at least 80 cm above the damaged area.
    1. Chisel a recess measuring 4 x 4 cm in the internal angle between the concrete slab and the basement wall.
  2. Check absorbency

    1. To check the absorbency of the substrate, pre-wet it with water.
  3. Drilling

    1. Drill boreholes (∅ 16 mm) into one horizontal masonry joint row.
    1. Clean the drill holes of dust using oil-free compressed air.
  4. Preparation for injection

    1. Prepare the manual gun weber.sys Nr. 3 and aluminium hose bag of injecting cream weber.tec 946 for the injection.
    1. Firmly attach the injection tube to the screw adapter.
    1. Firmly screw the adapter onto the nozzle thread.
  5. Application

    1. Use a manual pressure gun with injection cream to fill the drill holes completely from back to front.
    1. Pre-wet the substrate until it is slightly damp.
    1. Apply a bonding layer of watertight mortar weber.tec 933 (adjusted to a slurry consistency) to the groove area (where the angle of the concrete slab meets the basement wall), then fill the recess with weber.tec 933 (adjusted to a trowel consistency) using a flat trowel on the fresh bond coat.
    1. Smooth the groove with the coving trowel.
    1. Seal masonry joints with weber.tec 934.
    1. Apply bonding bridge and waterproofing render using weber.tec 934.
    1. Comb the weber.tec 934 horizontally.

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