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KellerRetter Hamburg

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Experts in solving basement leaks

Are you worried about solving your basement leak problem because you're worried about the hassle and high cost?Now there is finally a simple and permanent solution!

We are a Hamburg-based company that specializes in professionally solving basement leaks. Thanks to technological advances and unlike traditional methods, we use advanced materials based on nanotechnology to permanently seal leaks and give you back a dry and clean basement.

This innovative method cleverly solves the problem of negative pressure when water penetrates into basements. It offers a long-term effect, can be carried out at any time of the year and does not require digging up the external walls of the basement. Clean, fast, efficient and cost-saving – for a sustainable result that impresses.

A spacious unfinished basement with exposed wooden beams on the ceiling and concrete floors. The walls are partially covered with wooden framing and plastic sheets. There is a door on the right side and a small window at the end of the room, providing some natural light. Pipes and ductwork are visible along the ceiling.
A spacious unfinished basement with exposed wooden beams on the ceiling and concrete floors. The walls are partially covered with wooden framing and plastic sheets. There is a door on the right side and a small window at the end of the room, providing some natural light. Pipes and ductwork are visible along the ceiling.
An entrance to a basement with tiled walls illuminated by a light. A window reflecting outdoor foliage and a sign saying 'Additions Goods' is visible. The scene includes a mix of natural and architectural elements, with plants lining a brick pathway.
An entrance to a basement with tiled walls illuminated by a light. A window reflecting outdoor foliage and a sign saying 'Additions Goods' is visible. The scene includes a mix of natural and architectural elements, with plants lining a brick pathway.

about Us

Traditional construction methods

In the past, when building basements, a waterproofing layer was often added to the outside of the walls. Over time, this layer ages and peels away, allowing water molecules to penetrate into the basement through the gaps in the wall. This is a common problem with older houses, particularly in low-lying areas such as the Hamburg metropolitan region.

When water penetrates the basement, it not only damages the structure of the building, but also leads to mold growth and poses potential health risks for residents. Due to the water pressure from outside, it is extremely difficult to make repairs from the inside. Typically, those affected have no choice but to dig up the exterior walls of the basement and apply a new waterproofing layer. However, this method is time-consuming, expensive and significantly disrupts residents' everyday lives.

This is a pain point that affects almost every family that faces such issues.

A series of concrete tanks with blue interiors, containing what appears to be agricultural material. A rusted brown pipe with a red valve is connected to the left tank. The tanks are sheltered under a corrugated metal roof with white markings, and the area outside the tanks is rocky.
A series of concrete tanks with blue interiors, containing what appears to be agricultural material. A rusted brown pipe with a red valve is connected to the left tank. The tanks are sheltered under a corrugated metal roof with white markings, and the area outside the tanks is rocky.
A textured concrete wall with visible cracks and water stains. The surface has dark and light streaks running horizontally, showing signs of wear and age.
A textured concrete wall with visible cracks and water stains. The surface has dark and light streaks running horizontally, showing signs of wear and age.

The Latest Basement Leak Solutions!

State-of-the-art technology for waterproof solutions – fast, effective and guarantees a dry basement without worries!

Nano-level materials

Using special nanomaterials that penetrate the leaks and provide lasting protection to ensure a waterproof effect.

A hexagonal piece of material floating on water with the text 'WATER PROOF' written on it. The background is a monochromatic gray, suggesting a watery surface with ripples around the object.
A hexagonal piece of material floating on water with the text 'WATER PROOF' written on it. The background is a monochromatic gray, suggesting a watery surface with ripples around the object.
Simple and uncomplicated work process

No need to tear open the walls – fast drilling technology, year-round service and no disruption to your everyday life.

A modern, minimalist architectural facade featuring a series of horizontal metal slats within a concrete wall. The ground in front appears wet, reflecting the dull light and suggesting recent rain.
A modern, minimalist architectural facade featuring a series of horizontal metal slats within a concrete wall. The ground in front appears wet, reflecting the dull light and suggesting recent rain.

During the projects

3st phase

2st phase

1st phase

Previously

Afterward

Basement waterproofing projects

Dark, textured concrete wall with streaks and stains from water erosion, creating an abstract pattern. A stream of water flows smoothly at the bottom with a long exposure effect, creating a soft, blurred motion.
Dark, textured concrete wall with streaks and stains from water erosion, creating an abstract pattern. A stream of water flows smoothly at the bottom with a long exposure effect, creating a soft, blurred motion.
A concrete structure runs along the left side with visible metal railings. Below the structure, a layer of dark, polluted water is partially contained by a floating boom. The surface of the water reflects parts of the surroundings, suggesting an industrial environment.
A concrete structure runs along the left side with visible metal railings. Below the structure, a layer of dark, polluted water is partially contained by a floating boom. The surface of the water reflects parts of the surroundings, suggesting an industrial environment.
A dimly lit basement or underground passageway with exposed concrete walls and ceiling, featuring large pipes running along the left side and overhead. The floor is cluttered with various objects including an electrical outlet, plywood, and some bags. The lighting is sparse, casting shadows and creating a somewhat eerie and abandoned atmosphere.
A dimly lit basement or underground passageway with exposed concrete walls and ceiling, featuring large pipes running along the left side and overhead. The floor is cluttered with various objects including an electrical outlet, plywood, and some bags. The lighting is sparse, casting shadows and creating a somewhat eerie and abandoned atmosphere.
A concrete and cinder block basement room with two vertical pipes, one metallic and the other dark in color. The area is dimly lit, casting shadows on the walls, and there's a red box affixed to the wall.
A concrete and cinder block basement room with two vertical pipes, one metallic and the other dark in color. The area is dimly lit, casting shadows on the walls, and there's a red box affixed to the wall.

Anyway, the leaky, heavily contaminated basement...

Successful projects where we solved leakage problems using nanomaterials.

We can solve the problem quickly and thoroughly and keep the construction process clean and tidy without disrupting the residents' everyday lives as little as possible.

I am extremely satisfied with the service from Kellerretter Hamburg. Your professional technique solved the leak problem in my basement. The work was carried out quickly and cleanly – highly recommended!

Oliver

★★★★★

service

Professional Basement Leak Solutions – Protecting Your Home.

Contact us:

info.kellerretter-hh@gmx.de

KellerRetter Hamburg

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