Joint tapes and pipe penetrations

Transition areas professionally executed

Waterproofing over joints must ensure that no dampness can penetrate into the structure through the joints. They are subject to numerous stresses due to the structure moving, changes in temperatures and pressure from water. For surface areas that are waterproofed with polymer-modified bitumen thick coatings and reactive sealants, the waterproofing over joints is done using joint tapes made of polymer sealing membranes whose material is compatible and that are laminated with fleece or other fabric for easy embedding into the waterproofing material. In surface area waterproofing done with cold self-adhesive bitumen sheeting the waterproofing over joints must be reinforced with an additional strip from the KSK sheeting of at least 30 cm width.

Penetrations as well as connections and end pieces must be planned and produced in such a way that water cannot get behind or under them. They must be arranged in such a way that the structural waterproofing can be professionally executed. 

Expert Tip:

BOTAMENT D 12 is not only suitable to be used for deep solidification to treat slightly crumbling substrates, but can also be used as anti-porosity barrier on surfaces to be plastered. The product reduces the absorbency of the substrate in interior and exterior areas and is solvent-free.


Bridge building movement joints with the sealing tape BOTAMENT B 180.


Make up fillet-type with the bitumen thick coating around penetrations when waterproofing to protect against ground dampness and non-accumulating seepage water.


Produce penetrations with loose/fixed flange constructions when waterproofing to protect against accumulating seepage water and pressing water.


Integrate retrofitted light wells.