External Waterproofing Solutions for Foundation Walls

Surface Preparation

The application surface should be checked before waterproofing. The surface should be clean, smooth, solid and primed with 4701 Izoline Astar (Bitumen Primer). Before applying the rod holes used for administering the iron rod used for fixing the forms during reinforced concrete fabrication, iron rods and/or plastic parts should be removed from their places and if this is not possible, they should be cut minimum 2 cm below the concrete surface and the top part should be filled with 4004 Tamirart S40 structural repair mortar. On the surfaces subjected to segregation (concrete-aggregate decomposition), the decomposed area should be free of loose particles by applying mechanical methods, the gaps and pores on the surface should be filled with 4002 Tamirart 30 repair mortar and repaired before the waterproofing layer application.


Waterproofing

Two-component, polymer modified bitumen rubber based, solvent-free 3401 Izoblok 2K+ should be applied as the waterproofing layer in foundation shear walls in accordance with the instructions stated in the product specifications.


Waterproofing Protection

Earth filling should not be performed before the polymer modified bitumen based waterproofing materials completely dry. Waterproofing layer should be protected against the thermal insulation boards, drainage boards etc. and sharp objects inside the soil and mechanical effects during the filling process, before earth filling.


APPLICATION LAYERS

1. Concrete Shear Wall        
2. Tamirart S40
3. İzoline Astar (Primer)         
4. İzoblok 2K+ (1st Layer)
5. Waterproofing Net   
6. İzoblok 2K+ (2nd Layer)
7. XPS                     
8. Drainage Board