See How Membrane-Free Waterproofing Solution Can Help You Save money and the environment!

Tested in a lab and real life projects!

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to waterproof below-grade reinforced concrete structure! 

WPM® Crack Inducer Profile

To control and waterproof shrinkage cracks

WPM® Construction Joint Waterstops

To waterproof construction joints

Crystalline admixture

Waterproof Concrete - “self-healing” ability for cracks up to 0.4 mm.


helps you

Save environment 

You will use about 2-8x less waterproofing materials!

Save installation time

Fewer labor costs, do more jobs, and help more customers.

Save money

Save money on labour, time and material costs.

Saved 5 500 000+ kg of bitumen material

From 2009 when we started using integral waterproofing also known as white tank waterproofing, we have managed to save 5 500 000+kg of bitumen waterproofing materials from being used, transported and manufactured.


by material consumption on 1m²

Integral i.e. White Tank Waterproofing

Materials used:
- Crystalline admixture
- WPM® metal sheet waterstops
- WPM® Crack Inducer Profile

NET weight: 1.05kg/m²

Membrane Waterproofing

Materials used:
- WFP Pre-Tec
- WPM® metal sheet waterstops
- Primer
- Köster KSK

NET weight: 2.1kg/m²

Black Tank Waterproofing

Materials used:
- 2 layers of 3mm SBS material (floor slab)
- WPM® metal sheet waterstops

- Primer
- 2 layers of 3mm SBS material (wall)

NET weight: 9.8kg/m²

Construction companies and general contractors are saving environment and money!

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used in the "white tank" waterproofing solution

WPM® Crack Inducer Profile

In 2009 we started to use crystalline admixture in hopes that it will solve our problems with shrinkage cracks due to the fact that it can grow together up to 0.4mm cracks. When engineers calculate 0.2 to 0.3mm shrinkage cracks to 1m of reinforced concrete structure in the construction design, it seemed like a perfect fit at the time.

When we understood that some cracks open more than 0.4 mm and crystalline admixture could not grow them together, we designed a solution to control the reinforced concrete structure's shrinkage cracks so that the cracks are immediately waterproof at the desired location. We added a keyway shape to the profile to make the joint connection stronger so that it can be used in load-bearing structures.

In addition, as the crystalline waterproofing  admixture can't grow dynamic cracks that open and close together, the WPM® CRACK INDUCER profile allows that movement to happen while keeping the concrete structure waterproofed.

Construction Joint Metal-Sheet Waterstops

WPM® SEALING ELEMENT profiles are designed to waterproof construction joints. Compared to alternative solutions, the metal sheet is more reliable and long-lasting as it works at all times. We have added mineral coating to make concrete and metal sheet connection stronger and more reliable.

Works up to 4.4 bar of water pressure - tested in a lab!

Crystalline Waterproofing Admixture

The crystalline waterproofing admixture gives the concrete a “self-healing”  ability. Together with the water entering the crack, the admixture can close static cracks in the concrete with an opening width of less than 0.4 mm.

When the concrete structure is under constant dynamic load, i.e., moving constantly, the admixture has not enough time to heal those shrinkage cracks. In that case, we have a solution that enables the concrete to move and waterproof shrinkage cracks without any leaking dynamic cracks. For that, we made a WPM® CRACK INDUCER profile.

Crystalline waterproofing admixture is packaged into soluble bags, which makes the mixing process easier and with zero waste!

3D Automatic Crack Inducer Calculator

To make our customer's life easier, we made a 3D Automatic Crack Inducer Calculator, which calculates the quantity of all WPM® construction joint and shrinkage cracks controlling profiles. Just add height, length, and width. The calculator is interactive and can be viewed 360 degrees from any angle.

It is best used on-site before concrete casting to determine the exact places to install WPM® Crack Inducers. It is very important to consider the casting volume here because the first crack inducer must always be in the middle of the structure being cast.

In addition, we are working on a next-generation calculator so we can add the whole concrete structure plan with the pipe and cable penetrations.


in the integral, i.e., "white tank" waterproofing system


WPM® CRACK INDUCER PROFILE-s are added to the concrete structure to control cracks that appear due to concrete shrinkage.

Using our 3D Automatic Crack Inducer Calculator's plan, the instalment of the profile is easier than ever, because it shows exactly where to install the profile by a cm.

Construction joint profiles

Construction joint profiles are added just before casting process to prevent water infiltration from the construction joints.

Using our 3D Automatic Crack Inducer Calculator's plan, the instalment of the profile is easier than ever.

Crystalline admixture to concrete mix

Crystalline admixture is mixed to the concrete in the concrete factory. We use crystalline admixture in souluble bags so it can be inserted to the mix conveniently and with no waste.

Concrete casting

Concrete that is mixed with crystalline waterproofing admixture is being casted after all the construction joint waterstops and crack inducing profiles are installed.

Concrete structure is waterproof after casting proccess!

No need for extra membrane to the outer layer of the structure! If there will be any cracks crystalline waterproofing admixture in the concrete will grow it together (cracks up to 0.4mm)

If there should be a static crack opening up to a 0.4mm and will not grow together, we will inject the static crack and close the leak in our own expense.


we use to waterproof all extra necessary components

Pipe Penetrations

Kraso pipe penetrations and sealing elements, makes it easy to penetrate pipes and cables through concrete walls without water infiltration

BeSealed - 
Plugs and Rings

BeSealed hydrophilic plugs and rings allow us to waterproof concrete cracks around formwork spacers and formwork spacers themselves

WFP Injection System

Using as a backup addition to joint profiles, allows to inject injection resign to close all openings in construction joint to stop water infiltration, if it were to happen.

Does that sound interesting to you?

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Shrinkage cracks occur when casting 10+meter walls without WPM® Crack Inducer profile!

With our experience from 2009, we have seen countless times the same problem!
Shrinkage cracks appear mostly after every 4-5m on a 2.8m height wall.


When using WPM® Crack Inducer profile with calculated distance we can control and waterproof shrinkage cracks!

As we saw that shrinkage cracks appear mostly after every 4-5m we decided to try different crack inducers on the market. Soon came out some of their deficits and we decided to make our own Crack Inducer without the deficits.

In the picture, we can see how on a 20m wall we are using three WPM® Crack Inducer profiles with a 5m distance to control and guide shrinkage cracks while waterproofing them at the same time.

Result of the WPM® Crack Inducer profile - controlled and waterproofed shrinkage cracks.

Get optimal waterproofing solution for your project!

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that has used a "white tank" waterproofing solution

Kiikri 6, Tallinn,

Materials used:

  • Crystalline admixture - 
  • WPM® SEALING ELEMENTS 80R and 125R - 625 m
  • WPM® CRACK INDUCER profile - 160 m

Marijas iela 2A, Riga, Latvia 

Materials used:

  • Crystalline admixture - 
    7416 m³
  • WPM® SEALING ELEMENTS 80R and 125R - 1260 m
  • WPM® CRACK INDUCER profile - 320 m

Tērbatas iela 72, Riga, Latvia

Materials used:

  • Crystalline admixture - 1230 
  • WPM® SEALING ELEMENTS 80R and 125R - 720 m
  • WPM® CRACK INDUCER profile - 145 m

Tērbatas iela 72, Riga, Latvia

What are YIT Latvia's thoughts about the "White Tank" solution in general?

"We like that materials were easy to handle and install. The best part is that there was no pasting and plastering of anything, pure and quick work! The turnover time was faster than we were used to before which was just a bonus for us! "


Does YIT Latvija plan to continue using "White Tank" waterproofing solution in cooperation with Primostar SIA?

"When we can we definitely will! The solution is quick and easy and the Crack Inducers are genial for controlling shrinkage cracks!"

Ingars Grimza • Project Manager | SIA YIT Latvija



with a "white tank" waterproofing solution?

Reliable partner

Primostar was started in 2000 and has grown yearly turnover on average every year. We have gone through economical crash of 2007-2008 and all other ressesions between and are stronger than ever!

Quality products

Primostar has been providing German quality materials since day one. We are working with industry-leading experts!
Now producing our own Estonian made product we are on par with the German quality if not even better!

20+ years of experience

By working closely with our partners we are seeing first hand what is working and what is not. With that, we have gathered knowledge of what is working and what is not, making us qualified to offer consultation with our experts for our products.

Indrek Uusalu

Our majority shareholder and CEO

Indrek is an entrepreneur, leader, product developer, and next-generation waterproofing solutions, enthusiast.

He joined the company in 2002 as a commission-based salesman and became the CEO the next year in 2003.
As a CEO he is responsible for growing the company's average turnover from 24 000€ to 1.4M€ in 2021.

Founded a manufacturing company WPMEstonia OÜ in 2018 with 16 years of knowledge in the industry and created a needed, patent-pending product, to help builders waterproof their concrete structures better and smarter!


Contact us to get started with your project!

Reimo Tsepkin

Export Sales

   +372 5668 4201

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