Isokristall –
WTA-certified basement waterproofing against water & radon MADE IN GERMANY
Retroactive "White Tank" (Impermeable concrete structure) without excavation
Damp basements, wet walls, or hydrostatic pressure? With Isokristall, you rely on a WTA-certified recrystallization process that permanently protects your masonry – without the need for excavation, trenching, or drilling. Through a concentration gradient, the active ingredients independently penetrate deep into the wall and floor slab, binding moisture and converting it into a mineral masonry structure. Your building structure itself becomes a water-impermeable "White Tank."
Protection even against hydrostatic pressure – tested up to 1.5 bar
Isokristall is distinguished in both categories of WTA certification – for ground moisture/seepage water and for pressurized water. The system withstands water pressure of up to 1.5 bar, which corresponds to a depth of approx. 15 meters below the groundwater table.
100% Radon-proof – certified by IAF Dresden
Radon is the second leading cause of lung cancer after smoking. As a noble gas, it enters the home through leaky basement walls. Isokristall is officially tested and certified by IAF Dresden as 100% radon-proof. This protects your family while simultaneously increasing the value of your property.
The 5- or 8-layer system for maximum safety
Our 5- or 8-layer system (depending on the use class) combines priming, crystalline slurry, fine filler, protective coating, and final coating into a long-lasting complete solution. The waterproofing acts simultaneously as a horizontal and vertical barrier, stabilizes the masonry, and permanently prevents rising damp.
Your advantages at a glance:
WTA-certified in all categories of retroactive structural waterproofing
100% radon-proof – tested by IAF Dresden (Germany's most renowned radon laboratory)
Waterproof up to 1.5 bar
No drilling, no excavation – minimally invasive
Horizontal & vertical barrier in one
Suitable for basements, floor slabs, underground garages, elevator pits, and heritage-listed buildings
Optional warranty up to 30 years
Better quality of life, more safety
After restoration with Isokristall, musty odors, damp walls, and health risks are a thing of the past. You gain dry living or storage space, protect the building fabric and your health, and increase the energy efficiency of your property.
Get a free consultation now
Secure your free consultation for WTA-certified basement waterproofing with Isokristall today.
Basement waterproofing from the inside with Isokristall
Damp basement walls? We make them dry for good. With Isokristall, you rely on a WTA-certified waterproofing method that requires no excavation or drilling. The active ingredients penetrate deep into the masonry, bind moisture, and convert it into a solid mineral structure. The result: your basement remains permanently dry – even against hydrostatic pressure.
Why interior waterproofing with Isokristall is so effective:
Minimally invasive: No damage to outdoor areas, no excavation required.
Long-lasting: Active ingredients remain effective for decades and do not age.
Strong against extreme cases: Effective even under water pressure up to 1.5 bar.
Radon protection: 100% radon-proof – certified by IAF Dresden.
Radon Protection with Isokristall
Healthy living – eliminating invisible dangers:
Radon is a radioactive noble gas that enters buildings through leaky walls. According to health authorities, it is the second leading cause of lung cancer after smoking. Isokristall is officially tested as 100% radon-proof, providing reliable protection against this health hazard.
Radon protection & basement waterproofing in one
With Isokristall, you kill two birds with one stone: you waterproof your building against moisture while simultaneously stopping radon infiltration.
100% Radon-proof – certified by IAF Dresden
WTA-certified against hydrostatic pressure
Long-term protection with an optional warranty of up to 30 years
Suitable for new builds and renovations
Whether for existing properties or new constructions – the Isokristall system is versatile and meets the highest requirements for health protection and structural waterproofing.
