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How many times has this expansion joint been sealed? I don't know, I really don't. We've found various types of resins pumped into it over the years. And yet, the most mud is there. Leaking expansion joint rubber of the foundation slab. The film is mainly for construction engineers and property managers. Narrow - width approx. 25 mm Deep - thickness of the foundation slab approx. 70 cm Flooded - water constantly flows in at the junction of the expansion joint rubber and the bottom of the foundation slab To seal it, you first need to remove and clean the inside of the expansion joint. Without this, we would have suffered the same defeat as all our predecessors. Useful links https://inblock.com.pl https://inblock.com.pl/blog/ https://inblock.com.pl/sklep/