The Story – The History of ISOKRISTALL

Successful recrystallization processes for permanent waterproofing have existed in the USA and Canada for over five decades. However, to this day, these methods have only succeeded in reliably drying out concrete.

In Germany, by contrast, a

recrystallization process was developed

19 years ago that reliably and

permanently waterproofs not only

concrete but also all types of mineral

masonry (limestone, rubble stone, brick,

natural stone, Poroton, and even hollow

blocks).

The same German laboratory that achieved the revolutionary breakthrough in "interior structural waterproofing" in 2006 developed the ISOKRISTALL system between 2020 and 2021, exclusively for the building protection network of 1a-Gebäudeabdichtung GmbH. By using active ingredients proven in thousands of basements over 19 years and refining additives, pigments, and consistency, a new, pioneering waterproofing system was created.

This system works so reliably that, when applied correctly, there has not been a single complaint to date – a 100% success rate, even in the most severe cases of hydrostatic pressure.

Product testing between July 2024 and January 2025 according to WTA quality standards at the "MFPA Leipzig" (Germany's leading testing institute for leak testing) provided clear evidence of the ISOKRISTALL process's absolute reliability. Finally, in May 2025, all ISOKRISTALL components were awarded the renowned WTA certificate – the highest possible distinction in Germany for retroactive interior basement waterproofing.

Furthermore, walls and floor slabs treated with the ISOKRISTALL® system are 100% radon-proof. This has been officially certified by the well-known IAF Dresden radon laboratory. According to federal health authorities, radon in buildings is the second leading cause of fatal lung cancer after smoking.

2026: Heading to Italy – The Founding of Duracrista

In 2026, Duracrista was established to make this advanced and unique German solution available to the Italian market. Our mission is to permanently dry out the homes of millions of Italians. We solve moisture problems with sustainable, non-invasive methods, providing the security of certified German quality where conventional methods fail.